Equipment for automatically clamping and detecting radial run-out of water pump bearing

Abstract

The utility model discloses equipment for automatically clamping and detecting radial run-out of a water pump bearing, which comprises a base, a clamping mechanism is arranged on the base, the clamping mechanism comprises a clamping bottom plate, a pair of clamping blocks capable of moving relatively is arranged on the clamping bottom plate, and V-shaped grooves are formed in opposite surfaces of the clamping blocks along the vertical direction; a transmission mechanism is arranged above the clamping mechanism and comprises a vertically downward motor, a telescopic shaft is arranged at the output end of the motor, and a combiner is arranged at the lower end of the telescopic shaft; a load mechanism capable of moving up and down is arranged below the combiner and comprises a load block matched with the combiner, and a self-locking clamping jaw is arranged at the lower end of the load block. The clamping block can be driven by a cam arranged on the clamping bottom plate, the telescopic shaft is provided with a tension spring and connected with a lever arm, and the combiner and the load block are in clutch transmission. The equipment adopts a vertical detection mode, and the load block positions the part in the vertical direction and is driven by inertia, so that the influence of angle clearance and motor vibration on a detection result can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing testing equipment, and in particular relates to a device for automatically clamping and detecting radial runout of a water pump bearing. Background Art

[0002] The water pump shaft bearing is an important part of the automobile engine cooling system. The current automobile engine is developing towards high power, and its heat generation is increasing rapidly. The water pump, as the core of the cooling system, needs a higher speed and a larger impeller to ensure the normal temperature of the engine. At present, the common water pump shaft bearing speed reaches 6000r / min, and some high-speed shaft bearings can reach 9000r / min. Due to the high-speed characteristics of the water pump bearing, the radial runout value used to judge the rotation accuracy is one of the key data that needs to be tested. At present, there is no national standard for the detection method of the radial runout of the water pump bearing, and the detection method in the industry is not consistent. The usual detection method is to use a runout meter, install the bearing axially between the two tops, and the measured part can rotate freely. The micrometer pointer contacts the surface of the measured part with a certain pressure, and the measured part rotates around its reference axis for more than one circle. The change in the value indicated by the micrometer determines whether its radial runout value meets the standard. This detection method has certain measurement errors. There will be a certain angular clearance when measuring the entire bearing. The angular clearance will have a certain impact on the detection of the bearing shaft. The traditional detection method is not easy to eliminate this angular clearance, which will have an adverse effect on the accuracy of the bearing radial runout detection results. In addition, the traditional detection method uses the method of top fixation and micrometer pointer detection, which has low detection efficiency and automation, and is not suitable for automated detection of large quantities of workpieces. Utility Model Content

[0003] In view of the shortcomings of the prior art, this utility model proposes a device for automatically clamping and detecting radial runout of a water pump bearing, which can effectively reduce the influence of angular clearance on the detection result. In order to achieve the above technical purpose, the technical solution adopted by this utility model is as follows:

[0004] A device for automatically clamping and detecting radial runout of a water pump bearing comprises a base, on which a clamping mechanism is arranged, the clamping mechanism comprises a clamping base plate arranged horizontally on the upper surface of the base, a pair of clamping blocks are symmetrically arranged on both sides of the center point of the clamping base plate, the clamping blocks can reciprocate toward the center point in the horizontal direction, the opposite surfaces of the clamping blocks are respectively provided with V-shaped grooves with openings facing the center point and symmetrical to each other in the vertical direction, a detection probe is arranged on one of the clamping blocks, and the detection probe faces the center point; a transmission mechanism is arranged above the clamping mechanism, the transmission mechanism comprises a horizontally arranged motor support plate, the motor support plate is fixedly mounted on a plurality of support columns arranged vertically upward on the base, the support columns are distributed around the clamping base plate, and the middle of the motor support plate A motor is provided facing vertically downward, and a telescopic shaft is provided at the output end of the motor, and a cylindrical coupling is provided at the lower end of the telescopic shaft; a load mechanism is provided below the coupling, and the load mechanism includes a horizontally arranged load block mounting plate, and the load block mounting plate can move up and down in the vertical direction, and a load block is provided in the middle of the load block mounting plate, and the load block is a cylindrical structure with a larger upper diameter and a step portion, and the axes of the motor, the coupling and the load block are relatively aligned with the center point in the vertical direction; a raceway that cooperates with each other is provided along the annular direction between the step surface of the load block and the load block mounting plate, and a ball is provided in the raceway, and a groove is provided along the annular direction on the upper end surface of the load block, and a plurality of limit blocks are provided in the groove, and a protrusion that cooperates with the groove is provided on the lower end surface of the coupling, and a self-locking claw is provided at the lower end of the load block.

[0005] Preferably, the clamping base plate is provided with mutually parallel guide grooves on both sides of the center point, the lower part of the clamping block cooperates with the guide grooves, and the clamping block reciprocates along the guide grooves.

[0006] Furthermore, a support block is provided at the left end of the guide groove, a cam is provided on the clamping base plate between the support block and the left clamping block, a connecting rod is provided between the support block and the right clamping block along the guide groove, a tension spring is provided between the two clamping blocks, and the tension spring is mounted on the connecting rod.

[0007] Preferably, the upper part of the telescopic shaft is an inner shaft connected to the output end of the motor, and the lower part is an outer shaft connected to the connector. A stopper is provided on the inner shaft along the circumferential direction, a hoop is provided on the upper end of the outer shaft, and two tension springs sleeved on the inner shaft are provided between the stopper and the hoop. A lever base is provided on the load block mounting plate, and a lever connector is provided on the lever base. A horizontal lever arm is provided at the upper end of the lever connector. The lever arm and the lever connector are connected by a pin. One end of the lever arm is cooperatively connected to the hoop, and the other end is provided with a lever column, which can be driven by a cylinder to move up and down in a vertical direction.

[0008] Furthermore, a plurality of buffer cylinders are provided between the motor and the motor support plate.

[0009] Preferably, the four corners of the load block mounting plate are respectively provided with vertically upward movable columns, which pass through the motor support plate and can move synchronously up and down in the vertical direction.

[0010] Preferably, the clamping blocks are respectively connected with transverse plates, and the transverse plates extend horizontally toward the outer edge of the base in a direction perpendicular to the movable direction of the clamping blocks.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the detection equipment is different from the traditional detection device, and adopts a vertical detection method. The clamping mechanism clamps and fixes the outer shaft of the bearing to be detected. After the transmission mechanism drives the load block to rotate through the coupling, the coupling is separated from the load block. The load block maintains the rotational inertia and cooperates with the inner shaft of the bearing to be detected, so that the inner shaft of the bearing rotates axially, thereby completing the detection of the radial runout of the bearing. The equipment uses the load block to position and drive the parts in the vertical direction, which can effectively reduce the influence of the angular clearance on the detection results. At the same time, the load block is separated from the coupling during detection, which can effectively reduce the influence of the motor vibration on the detection results. In addition, compared with the method of fixing the top at both ends, the equipment can realize automatic and rapid clamping of parts, and directly sort out the defective products after detection, which greatly improves the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 : Schematic diagram of the overall three-dimensional structure of the utility model.

[0013] Figure 2 : A schematic diagram of the local structure of the utility model.

[0014] Figure 3 : A schematic diagram of the local structure at B in the utility model.

[0015] Figure 4 : A schematic diagram of the local structure at C in the utility model.

[0016] Figure 5 : A longitudinal sectional structural schematic diagram of the utility model.

[0017] Figure 6 : A schematic diagram of the top view of the base in the utility model.

[0018] In each figure:

[0019] 1. Base; 11. Support column; 2. Clamping mechanism; 21. Clamping base plate; 22. Center point; 221. Tension spring 1; 222. Horizontal plate; 23. Clamping block; 24. V-shaped groove; 25. Detection probe; 26. Guide groove; 27. Support block; 28. Cam; 29. ​​Connecting rod; 3. Transmission mechanism; 31. Motor support plate; 32. Motor; 33. Telescopic shaft; 331. Inner shaft; 332. Outer shaft; 333. Block; 334. Hoop seat; 34. Connector; 35. Protrusion; 36. Tension spring 2; 37. Buffer cylinder; 4. Load mechanism; 41. Load block mounting plate; 42. Load block; 43. Ball; 44. Groove; 45. Limit block; 46. Self-locking claw; 47. Movable column; 5. Lever base; 51. Lever connector; 52. Lever arm; 53. Lever column. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship shall also be regarded as the scope of the implementation of the utility model without substantial change in the technical content. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work shall fall within the scope of protection of the utility model.

[0021] A device for automatically clamping and testing radial runout of water pump bearings, referring to Figures 1 to 6As shown, it includes a base 1, on which a clamping mechanism 2 is provided, and the clamping mechanism 2 includes a clamping base plate 21 arranged on the upper surface of the base 1 in the horizontal direction, and a pair of clamping blocks 23 are symmetrically provided on both sides of the center point 22 of the clamping base plate 21, and the clamping blocks 23 can reciprocate toward the center point 22 in the horizontal direction, and the opposite surfaces of the clamping blocks 23 are respectively provided with V-shaped grooves 24 with openings facing the center point 22 and symmetrical to each other in the vertical direction, and a detection probe 25 is provided on one of the clamping blocks 23, and the detection probe 25 faces the center point 22, and the detection probe 25 can adopt a conventional contact probe. When the clamping block 23 moves inward, the outer shaft of the water pump bearing to be detected is clamped and fixed between the V-shaped grooves 24 on both sides in the vertical direction, with the short axis of the water pump bearing facing upward and the long axis facing downward, and the pre-installed position of the detection probe 25 should meet the contact and fit of its end with the surface of the long axis of the water pump bearing in the clamped state. A transmission mechanism 3 is provided above the clamping mechanism 2, and the transmission mechanism 3 includes a motor support plate 31 arranged in the horizontal direction. The motor support plate 31 is fixedly mounted on a plurality of support columns 11 vertically arranged upward on the base 1. In a specific application, the number of support columns 11 is four, which are distributed on the four corners of the base 1 around the clamping bottom plate 21, so that the motor support plate 31 can be more stable. A motor 32 vertically facing downward is provided in the middle of the motor support plate 31, and a telescopic shaft 33 is provided at the output end of the motor 32. The telescopic shaft 33 passes through the motor support plate 31 and extends downward, and a cylindrical coupling 34 is provided at the lower end of the telescopic shaft 33. A load mechanism 4 is provided below the coupling 34. The load mechanism 4 includes a horizontally arranged load block mounting plate 41. The load block mounting plate 41 can move up and down in the vertical direction. A load block 42 is provided in the middle of the load block mounting plate 41. The load block 42 is a cylindrical structure with a larger upper diameter and a stepped portion. The axis of the motor 32, the coupling 34 and the load block 42 is vertically aligned with the center point 22 of the clamping bottom plate 21. The specific structure of the load block 42 is shown in FIG. Figure 3 As shown, a matching raceway is provided between the step surface of the load block 42 and the load block mounting plate 41 along the circumferential direction, and a ball 43 is provided in the raceway. The load block 42 can rotate freely on the load block mounting plate 41 along the axial direction, and the lower part of the load block 42 extends downward through the load block mounting plate 41. A self-locking claw 46 is provided at the lower end of the load block 42. The self-locking claw 46 is a relatively common mechanical component. When a shaft-like component is pushed into the middle of the claw along the axial direction, the claw is pushed to rotate to clamp the shaft, and the claw is released when the shaft-like component is withdrawn. The lower end surface of the coupling 34 cooperates with the upper end surface of the load block 42. Specifically, the upper end surface of the load block 42 is provided with a groove 44 along the circumferential direction, and a plurality of limit blocks 45 are provided in the groove 44. The lower end surface of the coupling 34 is provided with a protrusion 35 that cooperates with the groove 44. When the lower surface of the coupling 34 contacts and cooperates with the upper surface of the load block 42, the protrusion 35 is located in the groove 44, and the load block 42 is driven to rotate synchronously when the coupling 34 rotates.

[0022] The working process and working principle of the equipment are as follows: the feeding device mechanical arm set up separately clamps the bearing to be tested to the clamping station of the clamping mechanism 2, that is, the position between the two clamping blocks 22. The clamping blocks 22 move inwards towards each other at the same time, so that the outer shaft of the bearing to be tested is clamped and fixed between the V-shaped grooves 24 on both sides. Then the mechanical arm withdraws, and the motor 32 drives the coupling 34 to rotate through the telescopic shaft 33. The telescopic shaft 33 extends downward to make the lower surface of the coupling 34 contact and cooperate with the upper surface of the load block 42. After the coupling 34 drives the load block 42 to rotate synchronously for about 2 seconds, the telescopic shaft 33 drives the coupling 34 to move upward to separate it from the load block 42. The load block 42 continues to maintain a rotating posture under the action of inertia, and the load block mounting plate 41 moves downward. When the self-locking claw 46 at the lower end of the load block 42 reaches the height of the short shaft at the upper end of the bearing to be tested, the short shaft enters the middle of the claw and is clamped, and the load block 42 drives the inner shaft of the bearing to be tested to rotate, and the detection probe 25 detects the radial runout of the bearing. This detection device is different from the traditional detection device. It adopts a vertical detection method. The clamping mechanism 2 clamps and fixes the outer shaft of the bearing to be detected. After the transmission mechanism 3 drives the load block 42 to rotate through the coupling 34, the coupling 34 is separated from the load block 42. The load block 42 maintains the rotational inertia and cooperates with the inner shaft of the bearing to be detected, so that the inner shaft of the bearing rotates axially, thereby completing the detection of the radial runout of the bearing. After the detection is completed, the mechanical arm of the feeding device clamps the parts away. The equipment uses the load block 42 to position and drive the parts in the vertical direction, which can effectively reduce the influence of the angular clearance on the detection results. At the same time, the load block 42 is separated from the coupling 34 during the detection, which can effectively reduce the influence of the vibration of the motor 32 on the detection results. In addition, compared with the method of fixing the top at both ends, the equipment can realize automatic and rapid clamping of parts, and directly sort out the defective products after detection, which greatly improves the detection efficiency.

[0023] The movement of the clamping block 23 can be driven by motors or cylinders arranged on both sides. In a preferred embodiment, referring to Figure 2 As shown, the clamping base plate 21 is provided with mutually parallel guide grooves 26 on both sides of the center point 22, and the lower part of the clamping block 23 cooperates with the guide groove 26, and the clamping block 23 reciprocates along the guide groove 26. Figure 2 and Figure 6 As shown, one end of the guide groove 26, for example, the left end, is provided with a support block 27, and the clamping base plate 21 is provided with a cam 28 between the support block 27 and the left clamping block 23, and the cam 28 has different diameters in different directions, which can be Figure 6The shape shown can also be an elliptical shape, etc. A connecting rod 29 is provided between the support block 27 and the right clamping block 23, and the connecting rod 28 can be arranged along the guide groove 26. A tension spring 221 is provided between the two clamping blocks 23, and the tension spring 29 is sleeved on the connecting rod 28. There is no connection between the left clamping block 23 and the connecting rod 28. In the initial state, the clamping block 23 is separated on the outer side of the tension spring 221, and the two sides with shorter diameters of the cam 28 abut against the surfaces of the support block 27 and the left clamping block 23. When the clamping action is performed, the cam 28 rotates 90° under the action of the air pump, and the two sides with longer diameters of the cam 28 abut against the surfaces of the support block 27 and the left clamping block 23, pushing the left clamping block 23 inward and the support block 26 outward. The support block 26 pulls the right clamping block 23 inward through the connecting rod 28, thereby realizing that a driving force drives the left and right clamping blocks 23 to move inward synchronously. After the detection is completed, the cam 27 rotates 90° to reset, and the clamping blocks 23 on both sides are separated to both sides under the action of the tension spring 1 221. The driving structure is more efficient, the clamping blocks 23 on both sides have better synchronization, and only one driving power is needed, which can effectively save costs.

[0024] The function of the telescopic shaft 33 is to drive the coupling 34 to move up and down and to engage and disengage with the load block 42 while rotating. In a preferred embodiment, the upper part of the telescopic shaft 33 is an inner shaft 331 connected to the output end of the motor 32, and the lower part is an outer shaft 332 connected to the coupling 34. The inner shaft 331 and the outer shaft 332 can be connected by a spline. While rotating synchronously, the outer shaft 332 can move axially relative to the inner shaft 331. A stopper 333 is provided on the inner shaft 331 along the circumferential direction, and a hoop seat 334 is provided on the upper end of the outer shaft 332. A tension spring 36 sleeved on the inner shaft 331 is provided between the stopper 333 and the hoop seat 334. A lever base 5 is provided on the load block mounting plate 41, and a lever connector 51 is provided on the lever base 5. A horizontal lever arm 52 is provided on the upper end of the lever connector 51. The lever arm 52 and the lever connector 51 are connected by a pin. One end of the lever arm 52 is connected with the hoop seat 334. The end of the lever arm 52 is hooped around the hoop seat 334 without affecting the rotation of the outer shaft 332. The other end is provided with a lever column 53, which can be driven by a cylinder to move up and down in the vertical direction. Under the action of the tension spring 236, the outer shaft 332 has a downward pressure, which can make the contact and fit between the coupling 34 and the load block 42 more closely and not easy to separate by itself. When the lever column 53 is pressed down, the other end of the lever arm 52 lifts the outer shaft 332 through the hoop 334, so that the coupling 34 is separated from the load block 42. The use of a lever transmission can effectively simplify the driving structure of the telescopic shaft 33. In a preferred embodiment, the motor 32 and the motor support plate 31 are provided with a plurality of buffer cylinders 37. When the lever mechanism is actuated, the air pressure of the buffer cylinder 36 can be adjusted to make the motor 31 move up and down, further improving the lifting efficiency of the coupling 34.

[0025] The load block mounting plate 41 is a bearing component of the load block 42, and needs to maintain a high degree of stability while moving up and down. In a preferred embodiment, the four corners of the load block mounting plate 41 are respectively provided with vertically upward movable columns 47, which pass through the motor support plate 41 and can move synchronously up and down in the vertical direction. The upper end of the movable column 47 can be connected to the same bracket and driven by a cylinder fixedly set on the upper body or frame.

[0026] In a preferred embodiment, referring to Figure 2 and Figure 5 As shown, the clamping blocks 22 are respectively connected with transverse plates 222, and the transverse plates 221 extend horizontally to the outer edge of the base 1 in a direction perpendicular to the moving direction of the clamping blocks 22. A material transfer channel is formed between the two transverse plates 222, and when unqualified parts are detected, the unqualified parts are pushed from the material transfer channel to the waste basket by a pushing mechanism arranged at the other end.

[0027] In summary, the utility model provides a device for automatically clamping and detecting radial runout of water pump bearings, which effectively solves the problems that the detection results of existing detection means are easily affected by the bearing angular clearance, and the clamping efficiency and automation level are low. It has high utilization value and significance, and can be widely promoted and applied.

[0028] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A device for automatically clamping and detecting radial runout of a water pump bearing, comprising a base (1), characterized in that: The base (1) is provided with a clamping mechanism (2), the clamping mechanism (2) comprising a clamping base plate (21) arranged in a horizontal direction, a pair of clamping blocks (23) symmetrically arranged on both sides of a center point (22) of the clamping base plate (21), the clamping blocks (23) being capable of reciprocating in a horizontal direction toward the center point (22), and V-shaped grooves (24) with openings facing the center point (22) and symmetrical to each other are respectively arranged in a vertical direction on opposite surfaces of the clamping blocks (23), and a detection probe is arranged on one of the clamping blocks (23). A head (25) is provided above the clamping mechanism (2), and the detection probe (25) faces the center point (22); a transmission mechanism (3) is provided above the clamping mechanism (2), and the transmission mechanism (3) includes a horizontally arranged motor support plate (31), and the motor support plate (31) is fixedly mounted on a plurality of support columns (11) vertically arranged upward on the base (1), and the support columns (11) are distributed around the clamping base plate (21); a motor (32) is provided vertically downward in the middle of the motor support plate (31), and an output end of the motor (32) is connected to the motor support plate (31). A telescopic shaft (33) is provided, and a cylindrical coupling (34) is provided at the lower end of the telescopic shaft (33); a load mechanism (4) is provided below the coupling (34), and the load mechanism (4) comprises a horizontally arranged load block mounting plate (41), and the load block mounting plate (41) can move up and down in a vertical direction, and a load block (42) is provided in the middle of the load block mounting plate (41), and the load block (42) is a cylindrical structure with a larger upper diameter and a stepped portion, and the motor (32), the coupling (34) and the load block The axis of (42) is vertically aligned with the center point (22); a matching raceway is provided between the step surface of the load block (42) and the load block mounting plate (41) along the annular direction, and a ball (43) is provided in the raceway; a groove (44) is provided on the upper end surface of the load block (42) along the annular direction, and a plurality of limit blocks (45) are provided in the groove (44); a protrusion (35) matching with the groove (44) is provided on the lower end surface of the coupling (34); and a self-locking claw (46) is provided at the lower end of the load block (42).

2. The device for automatically clamping and detecting radial runout of a water pump bearing according to claim 1, characterized in that: The clamping base plate (21) is provided with mutually parallel guide grooves (26) on both sides of the center point (22); the lower part of the clamping block (23) cooperates with the guide groove (26), and the clamping block (23) reciprocates along the guide groove (26).

3. The device for automatically clamping and detecting radial runout of a water pump bearing as claimed in claim 2, characterized in that: A support block (27) is provided at the left end of the guide groove (26); a cam (28) is provided on the clamping base plate (21) between the support block (27) and the left clamping block (23); a connecting rod (29) is provided between the support block (27) and the right clamping block (23) along the guide groove (26); a tension spring (221) is provided between the two clamping blocks (23); and the tension spring (221) is sleeved on the connecting rod (29).

4. The device for automatically clamping and detecting radial runout of a water pump bearing according to claim 1, characterized in that: The upper part of the telescopic shaft (33) is an inner shaft (331) connected to the output end of the motor (32), and the lower part is an outer shaft (332) connected to the coupling (34). A stopper (333) is provided on the inner shaft (331) along the circumferential direction, and a hoop seat (334) is provided at the upper end of the outer shaft (332). A tension spring (36) sleeved on the inner shaft (331) is provided between the stopper (333) and the hoop seat (334). A lever base (5) is provided on a mounting plate (41), a lever connector (51) is provided on the lever base (5), a horizontal lever arm (52) is provided at the upper end of the lever connector (51), the lever arm (52) and the lever connector (51) are connected by a pin, one end of the lever arm (52) is matched and connected with the hoop seat (334), and the other end is provided with a lever column (53), and the lever column (53) can be driven by a cylinder to move up and down in a vertical direction.

5. The device for automatically clamping and detecting radial runout of a water pump bearing as claimed in claim 4, characterized in that: A plurality of buffer cylinders (37) are provided between the motor (32) and the motor support plate (31).

6. The device for automatically clamping and detecting radial runout of a water pump bearing according to claim 1, characterized in that: The four corners of the load block mounting plate (41) are respectively provided with movable columns (47) facing upward vertically. The movable columns (47) pass through the motor support plate (31) and can move synchronously up and down in the vertical direction.

7. The device for automatically clamping and detecting radial runout of a water pump bearing according to claim 1, characterized in that: The clamping blocks (23) are respectively connected to transverse plates (222), and the transverse plates (222) extend horizontally toward the outer edge of the base (1) in a direction perpendicular to the movement direction of the clamping blocks (23).

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