Bell housing fairway uniformity testing fixture

Abstract

The utility model relates to the technical field of compression resistance detection devices, in particular to a bell housing fairway uniformity detection tool, which comprises a detection table, a plurality of groups of measuring heads are arranged on the detection table in a sliding manner, an open groove is further formed in the detection table, a gasket table is arranged in the open groove in a sliding manner, and a handheld rod penetrates through the outside of the detection table. One end of the handheld rod extends into the detection table, a conical surface sliding base is installed at one end of the handheld rod through a rolling bearing, the conical surface of the conical surface sliding base abuts against the bottom end of the gasket table, and the handheld rod is sleeved with a reset spring. A plurality of matched measuring heads slide into corresponding fairways, matched dial gauges display numerical values for uniformity detection, a handheld rod is rotated after detection to enable a limiting column to be aligned with a clamping groove and then to be loosened, a gasket table is made to be upward under the action of a reset spring outside the handheld rod, then a bell-shaped shell is driven to move upwards by a certain distance, and a gap is generated between the bell-shaped shell and a detection table. And the uniformity of the ball groove of the bell housing can be rapidly detected, and collision caused in the process of taking out the bell housing is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of compressive testing devices, in particular to a jig for checking the uniformity of a bell housing raceway. Background Technique

[0002] The inner cavity of the bell housing of the drive shaft part adopts a multi-group raceway design, and the steel balls matching the raceway are used to transmit the driving torque. Poor uniformity of the raceway will cause gaps after assembling the steel balls or tight fit, resulting in poor transmission efficiency. At present, the uniformity of the bell housing raceway is detected by a coordinate measuring machine. The coordinate measuring machine measures the contour dimensions of each raceway, and then detects the raceway difference through calculation. The detection time is long and a special jig is required for detection.

[0003] In the prior art, a patent with the publication number of CN201378037Y discloses a jig for checking the arc of the bell housing raceway, including a base frame, a workpiece platform arranged on the upper surface of the base frame for positioning the bell housing to be measured, a measuring bracket fixedly connected to the base frame, and swing rods arranged side by side on one side of the measuring bracket and hinged to it. The workpiece platform is fixedly connected to the base frame. The front end of the measuring bracket is provided with a drum-shaped positioning head fixedly connected to it and matching the arc of the bell housing raceway. A through hole is provided at the axis of the drum-shaped positioning head, and a measuring rod slidably matched with it is arranged in the through hole. A dial indicator for measuring the swing amount of the swing rod is also arranged on the base frame.

[0004] The above structure detects the arc of the bell housing raceway. However, since steel balls need to be assembled inside multiple groups of raceways in the bell housing, the uniformity of the bell housing raceway cannot be quickly detected, and it is easy to cause collisions inside the raceway during the process of taking and placing. Content of the Utility Model

[0005] In view of this, the purpose of the present utility model is to provide a jig for checking the uniformity of a bell housing raceway to solve the problems that the uniformity of the bell housing raceway cannot be quickly detected and it is easy to cause collisions inside the raceway during the process of taking and placing.

[0006] For the above purposes, the utility model provides a jig for checking the uniformity of the bell housing ball track, which includes a detection table. A plurality of probe heads are slidably installed on the detection table, and a plurality of dial indicators are fixedly installed on one side of the detection table. The dial indicators are electrically connected to the probe heads. A slot is also opened inside the detection table, and a washer table is slidably installed inside the slot. The washer table is used to support the bell housing. A hand-held rod penetrates through the outside of the detection table. One end of the hand-held rod extends into the detection table. One end of the hand-held rod is installed with a conical surface sliding seat through a rolling bearing. The conical surface of the conical surface sliding seat abuts against the bottom end of the washer table. A return spring is sleeved on the outside of the hand-held rod. One end of the return spring is connected to the inner wall of the detection table, and the other end is connected to the other side of the conical surface sliding seat. A positioning seat is fixedly installed on the outside of the detection table. The other end of the hand-held rod penetrates into the positioning seat, and a limiting column is fixedly installed on the outside of the hand-held rod. A card slot corresponding to the limiting column is opened inside the positioning seat.

[0007] Preferably, at least three groups of probe heads and dial indicators are provided. The top end of the probe head is hemispherical. The dial indicator is used to detect whether the ball track of the bell housing meets the requirements.

[0008] Preferably, two guiding columns penetrate through the bottom of the washer table. The guiding columns are installed inside the detection table and are symmetrically distributed.

[0009] Preferably, the bottom end of the washer table is provided with a chamfer, and a silica gel layer corresponding to the washer table is provided on the inclined surface of the conical surface sliding seat.

[0010] Preferably, there are at least two groups of limiting columns, and the limiting columns are perpendicular to the hand-held rod.

[0011] Preferably, the washer table and the bell housing are arranged in an up-and-down corresponding manner, and the diameter of the washer table matches the diameter of the bell housing.

[0012] The beneficial effects of the utility model: Before placing the ball track of the bell housing, first pull the hand-held rod away from the detection table until the limiting column is clamped on the positioning seat. At this time, the washer table drops below the slot. Then, after placing the bell housing on the detection table, multiple cooperating probe heads slide into the corresponding ball tracks. The probe heads are pressed by the arc surface inside the ball track and move. The cooperating dial indicator will display a value for uniformity detection. After the detection is completed, rotate the hand-held rod so that the limiting column is aligned with the card slot and then release the hand-held rod. Under the action of the return spring outside the hand-held rod, when the conical surface sliding seat moves, it contacts the chamfer at the bottom end of the washer table, causing the washer table to move upward, thereby driving the bell housing to move upward by a certain distance and generating a gap with the detection table. It can quickly detect the uniformity of the ball track of the bell housing. While being convenient for taking and placing, it can prevent collision during the process of taking out the bell housing. Description of the Drawings

[0013] To more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 Schematic diagram of the three-dimensional structure of the whole of the present utility model;

[0015] Figure 2 Schematic diagram of the semi-sectional structure of the whole of the present utility model;

[0016] Figure 3 Schematic diagram of the connection structure between the present utility model and the bell-shaped housing.

[0017] The marks in the figure are: 1, inspection table; 2, probe; 3, dial indicator; 4, slot; 5, washer table; 6, guide post; 7, conical surface slide; 8, hand-held rod; 9, return spring; 10, positioning seat; 11, limit post; 12, card slot; 13, bell-shaped housing. Specific embodiments

[0018] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the following further details the present utility model in combination with specific embodiments.

[0019] As Figure 1 、 Figure 2 and Figure 3 shown, a bell-shaped housing ball track uniformity inspection tool includes an inspection table 1, on which multiple groups of probes 2 are slidably installed, and multiple groups of dial indicators 3 are fixedly installed on one side of the inspection table 1. The dial indicators 3 are electrically connected to the probes 2. A slot 4 is also opened inside the inspection table 1, and a washer table 5 is slidably installed inside the slot 4. The washer table 5 is used to support the bell-shaped housing 13; a hand-held rod 8 penetrates through the outside of the inspection table 1, and one end of the hand-held rod 8 extends into the inspection table 1. One end of the hand-held rod 8 is installed with a conical surface slide 7 through a rolling bearing. The conical surface of the conical surface slide 7 abuts against the bottom end of the washer table 5. A return spring 9 is sleeved on the outside of the hand-held rod 8. One end of the return spring 9 is connected to the inner wall of the inspection table 1, and the other end is connected to the other side of the conical surface slide 7; a positioning seat 10 is fixedly installed on the outside of the inspection table 1. The other end of the hand-held rod 8 penetrates into the positioning seat 10, and a limit post 11 is fixedly installed on the outside of the hand-held rod 8. A card slot 12 corresponding to the limit post 11 is opened inside the positioning seat 10.

[0020] In this embodiment, before placing the bell housing 13 in the ball track, first pull the handheld rod 8 away from the detection table 1 until the limit post 11 is snapped onto the positioning seat 10. At this time, the washer table 5 descends below the slot 4. Then, after placing the bell housing 13 on the detection table 1, multiple cooperating probe heads 2 slide into the corresponding ball tracks. The probe heads 2 are pressed by the arc surface in the ball track and move, and the cooperating dial indicator 3 will display a value for uniformity detection. After the detection is completed, rotate the handheld rod 8 so that the limit post 11 is aligned with the card slot 12, then release the handheld rod 8. Under the action of the return spring 9 outside the handheld rod 8, when the conical surface sliding seat 7 moves, it contacts the chamfer at the bottom end of the washer table 5, causing the washer table 5 to move upward, thereby driving the bell housing 13 to move upward by a certain distance and creating a gap between the bell housing 13 and the detection table 1. This can quickly detect the uniformity of the ball tracks of the bell housing 13. While facilitating the picking and placing, it can prevent collisions during the process of taking out the bell housing 13.

[0021] As an embodiment, as Figure 1 shown, at least three groups of probe heads 2 and dial indicators 3 are provided. The top end of the probe head 2 is hemispherical, and the dial indicator 3 is used to detect whether the ball tracks of the bell housing 13 meet the requirements.

[0022] In this embodiment, multiple groups of probe heads 2 correspond to multiple groups of ball tracks in the bell housing 13. When the probe heads 2 slide into the corresponding ball tracks, the hemispherical top ends of the probe heads 2 are pressed by the arc surface in the ball tracks of the bell housing 13 and move, and the cooperating dial indicator 3 will display a value for uniformity detection.

[0023] As an embodiment, as Figure 2 shown, two groups of guide posts 6 penetrate through the bottom of the washer table 5. The guide posts 6 are installed in the detection table 1 and are symmetrically distributed.

[0024] In this embodiment, when the washer table 5 moves up and down, it can move vertically along the guide posts 6, avoiding deviation when the washer table 5 moves and ensuring that the washer table 5 corresponds to the bottom end of the bell housing 13.

[0025] As an embodiment, as Figure 2 shown, the bottom end of the washer table 5 is provided with a chamfer, and the inclined surface of the conical surface sliding seat 7 is provided with a silica gel layer corresponding to the washer table 5.

[0026] In this embodiment, when the conical surface sliding seat 7 moves, after the inclined surface contacts the chamfer of the washer table 5, it can drive the washer table 5 to move inside the slot 4. The silica gel layer reduces the friction between the conical surface sliding seat 7 and the washer table 5. When the washer table 5 moves upward, it can drive the bell housing 13 to lift, and when moving downward, it can avoid contacting the bell housing 13 during the detection process to prevent affecting the detection result.

[0027] As an embodiment, as Figure 1 、 Figure 2As shown, there are at least two sets of limit posts 11, and the limit posts 11 are perpendicular to the hand-held rod 8.

[0028] In this embodiment, when pulling the hand-held rod 8 to move outward, the limit post 11 outside the hand-held rod 8 moves along the inside of the card slot 12. When the limit post 11 disengages from the card slot 12, rotate the hand-held rod 8 so that the limit post 11 is clamped at one end of the positioning seat 10. At this time, the washer table 5 remains in the downward state; when rotating the hand-held rod 8 to align the limit post 11 with the card slot 12, release the hand-held rod 8. Under the pulling of the return spring 9, the washer table 5 jacks up the bell-shaped housing 13, providing assistance for taking out the bell-shaped housing 13 while not affecting the detection result.

[0029] As an embodiment, as Figure 1 and Figure 3 shown, the washer table 5 and the bell-shaped housing 13 are arranged corresponding to each other up and down, and the diameter of the washer table 5 matches the diameter of the bell-shaped housing 13.

[0030] In this embodiment, the downward movement of the washer table 5 avoids contact with the bell-shaped housing 13 during the detection process, preventing the influence on the detection result. During the upward movement of the washer table 5, by using the matching of the washer table 5 and the bell-shaped housing 13, the bell-shaped housing 13 can be driven to lift upward, facilitating the removal of the bell-shaped housing 13 after detection.

[0031] Working principle: When in use, before placing the bell-shaped housing 13 with the ball track aligned with the probe 2 downward, first pull the hand-held rod 8 away from the detection table 1. The limit post 11 outside the hand-held rod 8 moves along the inside of the card slot 12. When the limit post 11 disengages from the card slot 12, rotate the hand-held rod 8 so that the limit post 11 is clamped at one end of the positioning seat 10. At this time, the tapered surface slide 7 at one end of the limit post 11 disengages from the washer table 5, and the washer table 5 moves downward along the guide post 6, avoiding the washer table 5 exerting a force on the bell-shaped housing 13 and affecting the detection. Until the washer table 5 descends below the notch 4, then place the bell-shaped housing 13 on the detection table 1. The multiple cooperating probes 2 slide into the corresponding ball tracks. The probes 2 move under the pressure of the arc surface in the ball track, and the cooperating dial indicator 3 will display the value for uniformity detection; after the detection is completed, rotate the hand-held rod 8 to align the limit post 11 with the card slot 12, then release the hand-held rod 8. Under the action of the return spring 9 outside the hand-held rod 8, pull the tapered surface slide 7 at one end of the hand-held rod 8 to move inward. When the tapered surface slide 7 moves, it contacts the chamfer at the bottom end of the washer table 5, causing the washer table 5 to move upward, thereby driving the bell-shaped housing 13 to move upward a certain distance and creating a gap with the detection table 1, providing assistance for taking out the bell-shaped housing 13. It can quickly detect the uniformity of the ball track of the bell-shaped housing 13, and is convenient for taking and placing, while preventing collision during the process of taking out the bell-shaped housing 13.

[0032] Those of ordinary skill in the art should understand that any discussion of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, and they are not provided in detail for the sake of brevity.

[0033] The present invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bell-shaped shell ballway uniformity tester, comprising a test bench (1), characterized in that: The detection platform (1) is slidably mounted with a plurality of probes (2), and one side of the detection platform (1) is fixedly mounted with a plurality of micrometers (3), the micrometers (3) being electrically connected to the probes (2); a slot (4) is also provided inside the detection platform (1), a washer platform (5) is slidably mounted inside the slot (4), and the washer platform (5) is used to support the bell housing (13); a hand-held rod (8) is passed through the outside of the detection platform (1), one end of the hand-held rod (8) extends into the detection platform (1), and one end of the hand-held rod (8) is mounted with a conical sliding seat via a rolling bearing. (7), the conical surface of the conical sliding seat (7) contacts the bottom end of the washer platform (5), the outer portion of the hand-held rod (8) is sleeved with a return spring (9), one end of the return spring (9) is connected to the inner wall of the detection platform (1), and the other end is connected to the other side of the conical sliding seat (7); the outer portion of the detection platform (1) is fixedly mounted with a positioning seat (10), the other end of the hand-held rod (8) passes through the positioning seat (10), and the outer portion of the hand-held rod (8) is fixedly mounted with a limiting column (11), and the inner portion of the positioning seat (10) is provided with a slot (12) corresponding to the limiting column (11).

2. A bell-shaped shell ballway uniformity inspection tool according to claim 1, characterized in that: At least three sets of the probe (2) and the micrometer (3) are provided. The top of the probe (2) is hemispherical. The micrometer (3) is used to detect whether the ball track of the bell shell meets the requirements.

3. The bell-shaped shell ballway uniformity tester according to claim 1, characterized in that: Two groups of guide columns (6) are passed through the bottom of the gasket platform (5); the guide columns (6) are installed in the detection platform (1), and the guide columns (6) are symmetrically distributed.

4. The bell-shaped shell ballway uniformity tester according to claim 1, characterized in that: The bottom end of the gasket platform (5) is arranged to be chamfered, and the inclined surface of the conical sliding seat (7) is provided with a silicone layer corresponding to the gasket platform (5).

5. The bell-shaped shell ballway uniformity tester according to claim 1, characterized in that: There are at least two groups of the limiting posts (11), and the limiting posts (11) and the hand-held rods (8) are arranged perpendicular to each other.

6. The bell-shaped shell ballway uniformity tester according to claim 1, characterized in that: The washer platform (5) and the bell-shaped housing (13) are arranged in correspondence with each other up and down, and the diameter of the washer platform (5) matches the diameter of the bell-shaped housing (13).

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