Gasket inner diameter detection mechanism

Abstract

The utility model belongs to the technical field of detection mechanisms, and particularly relates to a gasket inner diameter detection mechanism which comprises a base, a floating seat used for supporting a workpiece is arranged on the base in a floating mode, a go-no go gauge is arranged in a center hole of the floating seat in a penetrating mode, and a pushing and pressing mechanism arranged in an automatic lifting mode is arranged above the floating seat. The pushing and pressing mechanism comprises a base, the bottom of the base is provided with an upper pressing piece used for pressing a workpiece to position the workpiece and a pushing and pressing piece used for pushing the floating seat to move downwards so that the go-no go gauge can make contact with the workpiece, and an upper inductor and a lower inductor which are in induction fit with the upper pressing piece are fixed to the base. The workpiece is pressed by the upper pressing piece, the lower surface of the workpiece is ensured to be in contact with the upper surface of the floating seat to prevent a product from inclining in the horizontal direction, the workpiece is driven by the pushing piece to move downwards to be in contact with the go-no go gauge, the inner diameter of the workpiece is detected through the cooperation of the lifting stroke of the workpiece and the inductor, and manual operation is replaced. The manual false detection rate is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection, and in particular relates to a gasket inner diameter detection mechanism. Background Art

[0002] Gaskets are widely used as universal parts in the assembly process of components. Thrust bearing gaskets serve as thrust bearing tracks to position and bear loads. When the bearing assembly uses shaft positioning, the inner diameter of the thrust bearing gasket is an important matching dimension. In order to ensure the performance of the bearing and the stability of the customer's assembly, the inner diameter of the thrust gasket must be qualified.

[0003] The size requirement of qualified products is generally not a fixed value, but a certain size range, and it is judged to be qualified within this range. Therefore, the inner diameter of the gasket is generally tested with a go and no-go gauge, which includes a through end and a stop end. When the inner diameter of the gasket can allow the through end to pass but not the stop end to pass, the gasket is a qualified product. In the existing technology, manual testing is generally used, which has low testing efficiency and high labor costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in order to solve the problem that the inner diameter of the gasket is generally measured by manually operating a go / no-go gauge in the prior art, resulting in low detection efficiency and high labor cost, a gasket inner diameter detection mechanism is now provided.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a gasket inner diameter detection mechanism, including a base, a floating seat for supporting a workpiece is floatingly arranged on the base, a go / no-go gauge is passed through the center hole of the floating seat, and the two can slide relative to each other, the go / no-go gauge is a gauge, which includes a through end with a small diameter and a stop end with a large diameter, and the through end is located above the stop end, and a lifting and lowering pushing mechanism is arranged above the floating seat;

[0006] The pushing mechanism includes a base, the bottom of which is provided with an upper pressing piece for pressing the workpiece to position it and a pushing piece for pushing the floating seat downward to make the go / no-go gauge contact the workpiece, and an upper sensor and a lower sensor that cooperate with the upper pressing piece are fixed on the base.

[0007] During the inspection, the workpiece is first placed on the floating seat, and the inner diameter of the workpiece is aligned with the center hole of the floating seat. When the driving mechanism drives the base to move downward, the upper pressing piece presses the workpiece to position it, and the pushing piece pushes the floating seat downward. The floating seat drives the workpiece on it to move downward, and the go / no-go gauge contacts the workpiece to detect the inner diameter of the workpiece.

[0008] If the through end cannot pass through the inner diameter of the workpiece, the upper pressure piece is opposite to the upper sensor, triggering the upper sensor, and the inner diameter of the workpiece is too small to be judged as unqualified; if the through end can pass through the inner diameter of the workpiece, but the stop end cannot pass through the inner diameter of the workpiece, the upper pressure piece is located between the upper sensor and the lower sensor and fails to trigger both, then the inner diameter of the workpiece is qualified; if the stop end can pass through the inner diameter of the workpiece, the upper pressure piece is opposite to the lower sensor, triggering the lower sensor, and the inner diameter of the workpiece is too large to be judged as unqualified.

[0009] The above technical solution utilizes an upper pressure piece to press the workpiece, ensuring that the lower surface of the workpiece contacts the upper surface of the floating seat to prevent the product from tilting horizontally, and utilizes a push piece to drive the workpiece downward so that it contacts the go / no-go gauge. The inner diameter of the workpiece is detected through the lifting and lowering stroke of the workpiece in coordination with the sensor, replacing manual operation and improving work efficiency.

[0010] Furthermore, the upper pressing member includes a core shaft fixed on the base, a sliding sleeve on the core shaft is provided with a sliding plate, and a flange for limiting the downward movement of the sliding plate protrudes from the bottom of the core shaft, and a plurality of pressing columns distributed along the circumference of the workpiece are fixed to the bottom of the sliding plate; when the base moves downward, the core shaft moves downward synchronously, and the sliding plate also moves downward synchronously under the action of gravity, driving the pressing columns to move downward and press the workpiece to prevent the workpiece from tilting during inspection, and the sliding plate and the pressing columns move downward by their own weight. If the two are fixedly connected to the core shaft, the pressing columns will keep pressing the workpiece when the pushing mechanism is pressed downward, which will cause the workpiece with a poor inner diameter to be hard pressed into the go / no-go gauge, and the inspection function cannot be achieved.

[0011] Furthermore, the bottom of the pressing column is a conical structure that is larger at the top and smaller at the bottom. Since the gasket is smaller in size, the pressing column with a conical structure can better contact the workpiece, thereby improving the pressing effect and reducing the risk of the sliding plate tilting.

[0012] Furthermore, the pushing member includes a plurality of pushing columns distributed along the circumference of the floating seat, the pushing columns are distributed around the pressing column and the diameter of the pushing columns is greater than the diameter of the pressing column.

[0013] Furthermore, the bottom of the floating seat protrudes inward to form an abutment portion for abutting against a go / no-go gauge.

[0014] In the initial state, the abutment portion abuts against the go / no-go gauge to limit the upper limit stroke of the floating seat.

[0015] Furthermore, a plurality of elastic members are provided between the floating seat and the base to realize the floating setting of the floating seat.

[0016] Furthermore, the upper sensor and the lower sensor are both photoelectric sensors.

[0017] Furthermore, the top surface of the go / no-go gauge is provided with a chamfer for guiding the pre-positioning of the workpiece when it moves downward, guiding the contact between the go / no-go gauge and the workpiece, and a pad for lifting the go / no-go gauge is provided under the go / no-go gauge.

[0018] The beneficial effects of the utility model are as follows: the utility model utilizes an upper pressure piece to press the workpiece, ensuring that the lower surface of the workpiece contacts the upper surface of the floating seat to prevent the product from tilting in the horizontal direction, and utilizes a pushing piece to drive the workpiece to move downward so that it contacts the go / no-go gauge, and realizes the inner diameter detection of the workpiece through the lifting stroke of the workpiece and the cooperation of the sensor, thereby replacing manual operation, reducing the manual false detection rate, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is the front view of the utility model;

[0021] Figure 2 It is a three-dimensional diagram of the utility model;

[0022] Figure 3 It is a cross-sectional view of the utility model;

[0023] In the figure:

[0024] 1. Base;

[0025] 2. floating seat; 201. center hole; 202. abutment portion;

[0026] 3. Go and stop rules;

[0027] 4. Pushing mechanism; 401. base; 402. upper pressing member; 4021. mandrel; 4022. sliding plate; 4023. flange; 4024. pressing column; 403. pushing column;

[0028] 5. Upper sensor;

[0029] 6. Lower sensor;

[0030] 7. Elastic parts;

[0031] 8. Workpiece. DETAILED DESCRIPTION

[0032] like Figure 1-Figure 3 As shown, the utility model is a gasket inner diameter detection mechanism, comprising a base 1, on which a floating seat 2 for supporting a workpiece 8 is floatingly arranged, and a plurality of elastic members 7 are arranged between the floating seat 2 and the base 1 to realize the floating arrangement of the floating seat 2, the elastic member 7 is a spring, and the workpiece 8 in this embodiment is a thrust bearing inner flange gasket;

[0033] A go / no-go gauge 3 is passed through the center hole 201 of the floating seat 2, and the two can slide relative to each other. A pad for lifting the go / no-go gauge 3 is provided between the go / no-go gauge 3 and the base 1, and the three are fixed by bolts. The go / no-go gauge 3 includes a through end with a small diameter and a stop end with a large diameter. The through end is located above the stop end, and a chamfer is provided on the top surface thereof for guiding pre-positioning when the workpiece 8 moves downward, and guiding the contact between the go / no-go gauge 3 and the workpiece 8. The bottom of the floating seat 2 protrudes inward to form an abutment portion 202 for abutting against the go / no-go gauge 3. In the initial state, the abutment portion 202 abuts against the go / no-go gauge 3 to limit the upper limit stroke of the floating seat 2.

[0034] A lifting and lowering pushing mechanism 4 is provided above the floating seat 2, and the pushing mechanism 4 includes a base 401. An upper pressing piece 402 for pressing the workpiece 8 to position it and a pushing piece for pushing the floating seat 2 downward to make the go / no-go gauge 3 contact the workpiece 8 are provided at the bottom of the base 401, and an upper sensor 5 and a lower sensor 6 for sensing and cooperating with the upper pressing piece 402 are fixed to the base 1 through a bracket, and the upper sensor 5 and the lower sensor 6 are both photoelectric sensors.

[0035] The upper pressing member 402 includes a core shaft 4021 fixed at the bottom of the base 401, a sliding plate 4022 is slidably sleeved on the core shaft 4021, and a flange 4023 is protruded from the bottom of the core shaft 4021 for limiting the downward movement of the sliding plate 4022, and a plurality of pressing columns 4024 distributed circumferentially along the workpiece 8 are fixed to the bottom of the sliding plate 4022, and the bottom of the pressing column 4024 is a conical structure with a larger top and a smaller bottom, and the number of the pressing columns 4024 can be but is not limited to three; when the base 401 moves downward, the core shaft 4021 moves downward synchronously, and the sliding plate 4022 also moves downward synchronously under the action of gravity, driving the pressing columns 4024 to move downward and press the workpiece 8.

[0036] The pushing member includes a plurality of pushing columns 403 distributed along the circumference of the floating seat 2. The pushing columns 403 are in contact with the floating seat 2 but not with the workpiece 8. The pushing columns 403 are distributed around the pressing column 4024 and the diameter of the pushing columns 403 is larger than the diameter of the pressing column 4024. The number of the pushing columns 403 can be but is not limited to three.

[0037] Working principle:

[0038] During the inspection, the pushing mechanism first pushes the workpiece 8 onto the floating seat 2, and the moving fixture aligns the inner diameter of the workpiece 8 with the center hole 201 of the floating seat 2 for initial positioning. During the process of the driving mechanism driving the base 401 to move downward, the pressing column 4024 presses the workpiece 8 to ensure that the lower surface of the workpiece 8 contacts the upper surface of the floating seat 2 to prevent the workpiece 8 from tilting horizontally. The pushing column 403 pushes the floating seat 2 downward, and the floating seat 2 drives the workpiece 8 thereon to move downward, and the go / no-go gauge 3 contacts the workpiece 8 to inspect the inner diameter of the workpiece 8.

[0039] If the through end cannot pass through the inner diameter of the workpiece 8, the upper pressing piece 402 is opposite to the upper sensor 5, triggering the upper sensor 5, and the inner diameter of the workpiece 8 is too small to be determined as unqualified; if the through end can pass through the inner diameter of the workpiece 8, but the stop end cannot pass through the inner diameter of the workpiece 8, the upper pressing piece 402 is located between the upper sensor 5 and the lower sensor 6, and fails to trigger both, then the inner diameter of the workpiece 8 is qualified; if the stop end can pass through the inner diameter of the workpiece 8, the upper pressing piece 402 is opposite to the lower sensor 6, triggering the lower sensor 6, and the inner diameter of the workpiece 8 is too large to be determined as unqualified.

[0040] Based on the above ideal embodiment of the utility model, through the above description, relevant staff can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of the utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

[0041] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A gasket inner diameter detection mechanism, characterized in that: The invention comprises a base (1), a floating seat (2) for supporting a workpiece (8) is floatingly arranged on the base (1), a go / no-go gauge (3) is inserted into a central hole (201) of the floating seat (2), and a lifting and lowering pushing mechanism (4) is arranged above the floating seat (2); The pushing mechanism (4) comprises a base (401), the bottom of which is provided with an upper pressing piece (402) for pressing the workpiece (8) to position it and a pushing piece for pushing the floating seat (2) downward to make the go / no-go gauge (3) contact the workpiece (8), and an upper sensor (5) and a lower sensor (6) for inductively cooperating with the upper pressing piece (402) are fixed on the base (1).

2. A gasket inner diameter detection mechanism according to claim 1, characterized in that: The upper pressing member (402) comprises a core shaft (4021) fixed at the bottom of the base (401); a sliding plate (4022) is slidably sleeved on the core shaft (4021); a flange (4023) protrudes from the bottom of the core shaft (4021) for limiting the downward movement of the sliding plate (4022); and a plurality of pressing columns (4024) distributed along the circumference of the workpiece (8) are fixed at the bottom of the sliding plate (4022).

3. A gasket inner diameter detection mechanism according to claim 2, characterized in that: The bottom of the pressing column (4024) is a conical structure that is larger at the top and smaller at the bottom.

4. A gasket inner diameter detection mechanism according to claim 1, characterized in that: The pushing member comprises a plurality of pushing columns (403) distributed along the circumference of the floating seat (2).

5. A gasket inner diameter detection mechanism according to claim 1, characterized in that: The bottom of the floating seat (2) protrudes inwards to form an abutment portion (202) for abutting against the go / no-go gauge (3).

6. A gasket inner diameter detection mechanism according to claim 1, characterized in that: An elastic member (7) is provided between the floating seat (2) and the base (1).

7. A gasket inner diameter detection mechanism according to claim 1, characterized in that: The upper sensor (5) and the lower sensor (6) are both photoelectric sensors.

8. A gasket inner diameter detection mechanism according to claim 1, characterized in that: The top surface of the go / no-go gauge (3) is provided with a chamfer, and a cushion block is provided under the go / no-go gauge (3).

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