Shaft part radial run-out detection equipment

Abstract

The utility model provides a radial run-out detection device for shaft parts, and the device comprises a feeding unit which is used for feeding the shaft parts; the detection unit comprises a detection table, a rotation driving assembly and a run-out detection assembly, the rotation driving assembly and the run-out detection assembly are arranged in the circumferential direction of the detection table, a vertical mandrel is arranged on the detection table and used for being connected with an inner hole of the shaft part in a sleeved mode, and the rotation driving assembly is used for driving the shaft part to rotate; therefore, the run-out detection assembly detects the radial run-out of the shaft part. The classification discharging unit comprises a temporary storage station and two sets of discharging mechanisms, and the classification discharging unit is used for sorting good products and defective products according to the detection result and charging the good products and the defective products into material pipes of the two sets of discharging mechanisms correspondingly; and the transferring unit is used for transferring the shaft parts among the feeding unit, the detecting unit and the classified discharging unit. By means of the mode, automatic feeding detection of the shaft parts is achieved, automatic classified discharging is conducted according to the detection structure, and the detection efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of automated testing equipment technology, and in particular to a radial runout testing device for shaft parts. Background Technology

[0002] In the field of mechanical manufacturing, the radial runout of shaft parts (such as drive shafts, pins, and bearing sleeves) is a key indicator affecting their assembly accuracy and performance. If the runout exceeds the tolerance range, it may lead to equipment vibration, increased noise, or even transmission failure. Therefore, during the production process of shaft parts, it is essential to perform high-precision testing on their radial runout and sort them according to the test results.

[0003] Currently, common methods for detecting runout mainly rely on manual operation of dial indicators or contact measuring instruments, which suffer from low efficiency and poor consistency. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a radial runout detection device for shaft-type parts that is highly automated and effectively improves work efficiency.

[0005] The main contents of this utility model include: a feeding unit, used for feeding shaft parts and distributing shaft parts one by one to adjust them to a vertical state;

[0006] The detection unit includes a detection stage, a rotary drive assembly disposed circumferentially on the detection stage, and a runout detection assembly. The detection stage has a vertical mandrel for fitting into the inner hole of a shaft-like part. The rotary drive assembly drives the shaft-like part to rotate, so that the runout detection assembly detects the radial runout of the shaft-like part.

[0007] The sorting and unloading unit includes a temporary storage station and two sets of unloading mechanisms. Each unloading mechanism includes a feeding component and a material tube fixing component. The sorting and unloading unit is used to sort good products and defective products according to the test results and load them into the material tubes of the two sets of unloading mechanisms respectively.

[0008] The transfer unit is used to transfer shaft-type parts between the feeding unit, the detection unit, and the sorting and unloading unit.

[0009] Preferably, the feeding unit includes a horizontal conveying mechanism and a material distribution component. The horizontal conveying mechanism includes a conveyor belt with two sets of parallel limiting side plates on both sides. A transmission channel with a width matching the shaft diameter of the shaft part is formed between the two sets of limiting side plates. The material distribution component is located at the discharge end of the conveyor belt and includes an L-shaped material distribution rod driven by a first rotary cylinder. The bent end of the L-shaped material distribution rod can switch between a horizontal receiving position and a vertical standing position.

[0010] Preferably, the bent end of the L-shaped material distribution rod coincides with the axial centerline of the shaft part when it is in the horizontal receiving position, and the diameter of the bent end is smaller than the inner diameter of the shaft part.

[0011] Preferably, the rotary drive assembly includes a laterally movable mounting frame, a double friction wheel assembly symmetrically arranged on the mounting frame, and a second rotary cylinder that is connected to the double friction wheel assembly via a gear belt assembly, wherein the second rotary cylinder drives the double friction wheel assembly to rotate synchronously.

[0012] Preferably, the rotary drive assembly further includes a linear displacement module for driving the mounting bracket to move laterally, so that the dual friction wheel set presses against the outer cylindrical surface of the shaft-like part.

[0013] Preferably, the runout detection assembly includes a displacement sensor with its detection end aligned with the mandrel.

[0014] Preferably, the feeding assembly includes a feeding rod, a first telescopic cylinder for driving the feeding rod to extend and retract axially, and a third rotary cylinder for driving the first telescopic cylinder to rotate. The third rotary cylinder is configured to drive the feeding rod to switch between a vertical feeding position and a horizontal feeding position.

[0015] Preferably, the material tube fixing assembly includes a material tube base and a pressing cover plate disposed above it. The upper surface of the material tube base is provided with an axially extending arc-shaped receiving groove, and the lower surface of the pressing cover plate is provided with an arc-shaped pressing groove coaxial with the receiving groove. The pressing cover plate is connected to a first lifting drive component that drives its lifting and lowering.

[0016] Preferably, the feed end of the material tube fixing assembly is provided with a separation auxiliary assembly, including a separation clamping plate and a second lifting cylinder for driving its lifting and lowering. The end of the separation clamping plate is provided with an arc-shaped bayonet, which is configured to separate shaft-type parts and feeding rods.

[0017] Preferably, the inner diameter of the arc-shaped bayonet is smaller than the diameter of the shaft part, and the inner diameter of the arc-shaped bayonet is larger than the diameter of the feeding rod.

[0018] The beneficial effects of this utility model are as follows: Through the coordinated operation of the feeding unit, detection unit, sorting and unloading unit, and transfer unit, automatic feeding, sorting, detection, and sorting of shaft parts are achieved, reducing manual intervention and significantly improving detection efficiency; the feeding unit adopts an L-shaped feeding rod and limiting side plate design to ensure that shaft parts are fed one by one and accurately adjusted to a vertical state, avoiding jamming or misalignment; the double friction wheel group of the rotary drive component presses the outer circle of the part through a linear displacement module, and cooperates with the mandrel positioning to ensure stability during rotation detection and reduce measurement errors; the sorting and unloading unit automatically sorts good and bad products according to the detection results, and loads them independently through two sets of unloading mechanisms to avoid mixing. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a preferred embodiment;

[0020] Figure 2 This is a three-dimensional structural diagram of the feeding unit in a preferred embodiment;

[0021] Figure 3 This is a three-dimensional structural diagram of the detection unit in a preferred embodiment;

[0022] Figure 4 This is a three-dimensional structural diagram of the sorting and unloading unit in a preferred embodiment;

[0023] Figure label:

[0024] 1. Feeding unit; 11. Conveyor belt; 12. Limiting side plate; 13. Distributing assembly; 131. L-shaped distributing rod; 132. First rotary cylinder;

[0025] 2. Detection unit; 21. Detection table; 211. Mandrel; 22. Rotary drive assembly; 221. Linear displacement module; 222. Mounting bracket; 223. Double friction wheel assembly; 224. Gear and belt assembly; 225. Second rotary cylinder; 23. Runout detection assembly; 231. Displacement sensor;

[0026] 3. Sorting and unloading unit; 31. Temporary storage station; 32. Feeding assembly; 321. Feeding rod; 322. First telescopic cylinder; 323. Third rotary cylinder; 33. Material tube fixing assembly; 331. Material tube base; 332. Pressing cover plate; 333. First lifting drive component; 34. Separation auxiliary assembly; 341. Separation clamp; 342. Second lifting cylinder; 343. Separation bayonet;

[0027] 4. Transfer unit. Detailed Implementation

[0028] The technical solution protected by this utility model will be described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 As shown, this application proposes a radial runout detection device for shaft parts, which includes a feeding unit 1, a detection unit 2, a sorting and unloading unit 3, and a transfer unit 4. The feeding unit 1 is used to feed shaft parts and sort them one by one to adjust them to a vertical state. The detection unit 2 is used to drive the shaft parts to rotate and detect their radial runout. The sorting and unloading unit 3 is used to sort good and bad products according to the detection results and load them into the material tube respectively. The transfer unit 4 is used to transfer the shaft parts between the feeding unit 1, the detection unit 2, and the sorting and unloading unit 3.

[0030] like Figure 1-2As shown, the feeding unit 1 includes a horizontal conveying mechanism, which includes a conveyor belt 11. Two parallel limiting side plates 12 are arranged on both sides of the conveyor belt 11, forming a transmission channel with a width matching the shaft diameter of the shaft parts. The shaft parts are arranged sequentially along the axial direction within the transmission channel, and the conveyor belt 11 is connected to a transmission drive for axial transmission. A material distribution assembly 13 is provided at the discharge end of the conveyor belt 11. The material distribution assembly 13 includes an L-shaped material distribution rod 131 and a first rotary cylinder 132 that drives the L-shaped material distribution rod 131 to rotate. The bent end of the L-shaped material distribution rod 131 can switch between a horizontal receiving position and a vertical receiving position. Preferably, when the L-shaped material distribution rod 131 is in the horizontal receiving position, its bent end coincides with the axial centerline of the shaft parts on the conveyor belt, and the diameter of the bent end is smaller than the inner diameter of the shaft parts.

[0031] The conveyor belt 11 drives the shaft parts to be conveyed towards the L-shaped material distribution bar 131, so that the inner hole of the shaft parts is fitted onto the bent end of the L-shaped material distribution bar 131 which is in the horizontal receiving position. The first rotary cylinder 132 drives the L-shaped material distribution bar 131 to rotate so that the bent end is turned to the vertical material position, and the shaft parts fitted onto the bent end are erected to facilitate subsequent gripping and inspection.

[0032] like Figure 1-3 As shown, the detection unit 2 includes a detection table 21, a rotary drive assembly 22 disposed circumferentially on the detection table 21, and a runout detection assembly 23. The detection table 21 is used to receive shaft-like parts transferred by the transfer unit 4, and the rotary drive assembly 22 is used to drive the shaft-like parts to rotate so that the runout detection assembly 23 can detect their radial runout.

[0033] like Figure 1-3 As shown, the testing table 21 has a vertical mandrel 211 for fitting into the inner hole of a shaft-like part, allowing the shaft-like part to be placed vertically on the testing table 21. Preferably, the diameter of the mandrel 211 is slightly smaller than the inner hole diameter of the shaft-like part, allowing the shaft-like part to be movably fitted onto the mandrel 211 and to rotate relative to the mandrel 211. The top end of the mandrel 211 has a guide chamfer to facilitate quick fitting and positioning of the shaft-like part through the inner hole.

[0034] like Figure 1-3As shown, the rotary drive assembly 22 includes a laterally movable mounting frame 222, a double friction wheel assembly 223 symmetrically arranged on the mounting frame 222, and a second rotary cylinder 225 that is connected to the double friction wheel assembly 223 via a gear belt assembly 224. The second rotary cylinder 225 drives the double friction wheel assembly 223 to rotate synchronously. Specifically, the double friction wheel assembly 223 consists of two identical friction wheels, which are rotatably arranged on the mounting frame 222 via a rotating shaft. The gear belt assembly 224 includes a gear shaft, which is connected in series with the two rotating shafts via gear belts. This causes the second rotary cylinder 225 to drive the gear shaft to rotate, and the rotating shafts connected in series with the gear shaft via gear belts to rotate, i.e., the two friction wheels rotate synchronously.

[0035] like Figure 1-3 As shown, the rotary drive assembly 22 also includes a linear displacement module 221 for driving the mounting bracket 222 to move laterally. The mounting bracket 222 moves closer to the detection table 21, causing the double friction wheel set 223 to press against the outer surface of the shaft-like part. When the double friction wheel set 223 rotates, it drives the shaft-like part to rotate synchronously. Preferably, the outer surface of the friction wheel is circumferentially covered with a rubber anti-slip material to increase the frictional force between the friction wheel and the shaft-like part, and the rotation of the friction wheel synchronously drives the shaft-like part to rotate.

[0036] like Figure 1-3 As shown, the runout detection assembly 23 includes a displacement sensor 231 aligned with the mandrel, with the detection end of the displacement sensor 231 facing the mandrel 211. During the rotation of the shaft-like part sleeved on the mandrel 211, the displacement sensor 231 detects the fluctuation value of the distance change between its end and the shaft-like part to detect whether its runout meets the requirements and to determine whether the shaft-like part is a good product.

[0037] like Figure 1-4 As shown, the sorting and unloading unit 3 includes a temporary storage station 31 and two unloading mechanisms. The temporary storage station 31 is used to receive shaft parts that have completed the runout test. The unloading mechanism includes a feeding assembly 32 and a material tube fixing assembly 33. Good products and defective products are sorted according to the test results and loaded into the material tube of the unloading mechanism respectively.

[0038] Specifically, the temporary storage station 31 includes a temporary storage platform with a vertical receiving rod on it. Shaft-type parts that have undergone runout detection are fitted onto the receiving rod.

[0039] like Figure 1-4As shown, the feeding assembly 32 includes a feeding rod 321, a first telescopic cylinder 322 that drives the feeding rod 321 to move axially, and a third rotary cylinder 323 that drives the first telescopic cylinder 322 to rotate. The third rotary cylinder 323 drives the first telescopic cylinder 322 to rotate. When the feeding rod 321 is in a vertical state, it is used to receive shaft-like parts. The third rotary cylinder 323 drives the first telescopic cylinder 322 to rotate, so that the feeding rod 321 switches between a vertical feeding position and a horizontal feeding position. Specifically, the rotation axis of the third rotary cylinder 323 is perpendicular to the axial direction of the feeding rod 321, and the rotation angle is 90°.

[0040] like Figure 1-4 As shown, the tube fixing assembly 33 includes a tube base 331 and a pressing cover plate 332 disposed above the tube base 331. The upper surface of the tube base 331 has an arc-shaped receiving groove extending axially, and the lower surface of the pressing cover plate 332 has an arc-shaped pressing groove coaxial with the receiving groove. The pressing cover plate 332 is connected to a first lifting drive member 333 that drives its lifting and lowering. Preferably, the radii of the receiving groove and the pressing groove are adapted to the outer diameter of the tube. The first lifting drive member 333 drives the pressing cover plate 332 to descend, so that the pressing groove and the receiving groove close to form a circular hole channel for receiving the tube. Specifically, the pressing cover plate 332 is slidably connected to the tube base 331 through a guide post, and the first lifting drive member 333 is a cylinder. An abutment end plate is provided at the end of the tube base 331 away from the feed inlet to limit the axial end position of the tube.

[0041] like Figure 4 As shown, further, the feed end of the material tube fixing assembly 33 is provided with a separation auxiliary assembly 34, which includes a separation clamping plate 341 and a second lifting cylinder 342 for driving the separation clamping plate 341 to rise and fall. The end of the separation clamping plate 341 is provided with an arc-shaped separation slot 343, which is configured to separate shaft-like parts and feeding rod 321 in the material tube. Preferably, the inner diameter of the separation slot 343 is smaller than the diameter of the shaft-like parts, and the inner diameter of the separation slot 343 is larger than the diameter of the feeding rod 321, so that the feeding rod 321 can move axially laterally within the separation slot 343, and the end of the shaft-like parts abuts against the side end face of the separation clamping plate 341.

[0042] In a specific embodiment, the transfer unit 4 may be a robotic arm or a rapid transport mechanism equipped with several pneumatic grippers, and no specific limitation is made here.

[0043] Working principle:

[0044] Shaft-type parts are placed sequentially on the conveyor belt 11 along the axial direction. The conveyor belt 11 transports the shaft-type parts towards the material distribution assembly 13. When a single part is fitted onto the bent end of the L-shaped material distribution rod 131, the conveyor belt 11 stops transporting, and the first rotary cylinder 132 drives the L-shaped material distribution rod 131 to rotate, so that its bent end is in a vertical state.

[0045] The transfer unit 4 transfers the shaft-like parts on the bent end to the inspection table 21 and puts the shaft-like parts onto the mandrel 211.

[0046] The linear displacement module 221 drives the mounting bracket 222 to move towards the spindle 211, so that the double friction wheel group 223 abuts against the shaft part on the spindle 211. The second rotary cylinder 225 drives the double friction wheel group 223 to rotate through the gear belt group 224, which in turn drives the shaft part to rotate. The runout detection component 23 performs radial runout detection on the rotating shaft part to determine whether the shaft part is a good product.

[0047] The transfer unit 4 transfers the shaft parts that have completed the inspection to the sorting and unloading unit. The shaft parts that pass the inspection enter the temporary storage station 31, while the shaft parts that fail the inspection are placed into a set of unloading mechanisms. The transfer unit then sends the shaft parts on the temporary storage station 31 to another set of unloading mechanisms.

[0048] The third rotary cylinder 323 drives the feeding rod 321 to rotate to the vertical direct feeding position to pick up the parts transferred from the temporary storage position 31; the third rotary cylinder 323 drives the feeding rod 321 to rotate 90° to the horizontal feeding position and align it with the feeding end of the material tube fixing assembly 33; the first telescopic cylinder 322 pushes the feeding rod 321 into the material tube and pushes the parts to the set position; the second lifting cylinder 342 drives the separation plate 341 to rise, so that the arc-shaped separation slot 343 is locked onto the feeding rod 321 at the feeding port, the first telescopic cylinder 322 retracts the feeding rod 321, the parts are blocked by the arc-shaped separation slot 343 and remain in the material tube, and after the feeding rod 321 is withdrawn, the separation plate 341 descends and resets.

[0049] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A radial runout detection device for shaft-type parts, characterized in that, Mainly includes: The feeding unit (1) is used to feed shaft parts and to separate the shaft parts one by one, so that they are adjusted to a vertical state; The detection unit (2) includes a detection table (21), a rotation drive assembly (22) disposed around the detection table (21), and a runout detection assembly (23). The detection table (21) has a vertical mandrel (211) for fitting into the inner hole of a shaft-like part. The rotation drive assembly (22) is used to drive the shaft-like part to rotate so that the runout detection assembly (23) can detect the radial runout of the shaft-like part. The sorting and unloading unit (3) includes a temporary storage station (31) and two sets of unloading mechanisms. Each unloading mechanism includes a feeding component (32) and a material tube fixing component (33). The sorting and unloading unit (3) is used to sort good products and defective products according to the test results and load them into the material tubes of the two sets of unloading mechanisms respectively. The transfer unit (4) is used to transfer shaft parts between the loading unit (1), the detection unit (2) and the sorting and unloading unit (3).

2. The radial runout detection device for shaft parts according to claim 1, characterized in that, The feeding unit (1) includes a horizontal conveying mechanism and a material distribution component. The horizontal conveying mechanism includes a conveyor belt (11). The conveyor belt (11) has two sets of parallel limiting side plates (12) on both sides. A transmission channel with a width matching the shaft diameter of the shaft part is formed between the two sets of limiting side plates (12). The material distribution component (13) is located at the discharge end of the conveyor belt (11). It includes an L-shaped material distribution rod (131) driven by a first rotary cylinder (132). The bent end of the L-shaped material distribution rod (131) can switch between a horizontal receiving position and a vertical standing position.

3. The radial runout detection device for shaft parts according to claim 2, characterized in that, The bent end of the L-shaped material distribution rod (131) coincides with the axial center line of the shaft part when it is in the horizontal receiving position, and the diameter of the bent end is smaller than the inner diameter of the shaft part.

4. The radial runout detection device for shaft parts according to claim 1, characterized in that, The rotary drive assembly (22) includes a horizontally movable mounting bracket (222), a double friction wheel assembly (223) symmetrically arranged on the mounting bracket (222), and a second rotary cylinder (225) that is connected to the double friction wheel assembly (223) via a gear belt assembly (224). The second rotary cylinder (225) drives the double friction wheel assembly (223) to rotate synchronously.

5. The radial runout detection device for shaft parts according to claim 4, characterized in that, The rotary drive assembly (22) also includes a linear displacement module (221) for driving the mounting bracket (222) to move laterally, so that the double friction wheel assembly (223) presses against the outer cylindrical surface of the shaft part.

6. The radial runout detection device for shaft parts according to claim 1, characterized in that, The runout detection assembly (23) includes a displacement sensor (231) with its detection end aligned with the mandrel.

7. The radial runout detection device for shaft parts according to claim 1, characterized in that, The feeding assembly (32) includes a feeding rod (321), a first telescopic cylinder (322) for driving the feeding rod (321) to extend and retract axially, and a third rotary cylinder (323) for driving the first telescopic cylinder (322) to rotate. The third rotary cylinder (323) is configured to drive the feeding rod (321) to switch between a vertical feeding position and a horizontal feeding position.

8. The radial runout detection device for shaft parts according to claim 1, characterized in that, The material tube fixing assembly (33) includes a material tube base (331) and a pressing cover plate (332) disposed above it. The upper surface of the material tube base (331) is provided with an axially extending arc-shaped receiving groove, and the lower surface of the pressing cover plate (332) is provided with an arc-shaped pressing groove coaxial with the receiving groove. The pressing cover plate (332) is connected to a first lifting drive member (333) that drives its lifting and lowering.

9. The radial runout detection device for shaft parts according to claim 7, characterized in that, The feed end of the feed tube fixing assembly (33) is provided with a separation auxiliary assembly (34), which includes a separation plate (341) and a second lifting cylinder (342) for driving its lifting and lowering. The end of the separation plate (341) is provided with an arc-shaped separation slot (343), which is configured to separate shaft parts and feed rods.

10. The radial runout detection device for shaft parts according to claim 9, characterized in that, The inner diameter of the separation bayonet (343) is smaller than the diameter of the shaft part, and the inner diameter of the separation bayonet (343) is larger than the diameter of the feed rod (321).

Images