Conical roller bearing outer ring comprehensive size detection equipment

Abstract

The application discloses a comprehensive size detection equipment for an outer ring of a tapered roller bearing, which comprises a rack, an outer diameter measuring mechanism and an inner diameter measuring mechanism; the outer diameter measuring mechanism comprises a base and a rotating disc arranged on the base, and an outer diameter measuring head is arranged on the base; the inner diameter measuring mechanism comprises a support and a lifting frame, two inner diameter measuring heads are arranged on the lifting frame, a height seat in sliding connection with the bottom of the support is arranged at the bottom of the support, a plurality of first steps with different heights are arranged on the side of the height seat, and a height limiting block is arranged on the lifting frame. The height seat is horizontally moved to the highest limiting point, the lifting frame is lowered, the height limiting block is pressed on the uppermost first step, the two inner diameter measuring heads are synchronously opened, are contacted with a measuring point 3 and are measured. Then the height limiting block is moved backward, and the measurement of measuring points 4-10 is sequentially completed through repeated operation. The contact between the height limiting block and the height seat is mechanical contact type, and high precision and stability can be achieved.

Description

Technical Field

[0001] This invention relates to the field of bearing testing, specifically to a comprehensive dimensional testing device for the outer ring of a tapered roller bearing. Background Technology

[0002] During the production of tapered roller bearings, the outer ring requires measurement at two points on its outer diameter and eight points on its inner diameter. The requirements for measurement accuracy and repeatability are extremely high, especially the measurement of the two inclined sides of the inner diameter, which places high demands on the stability of the measurement system. The accuracy and precision of the measurements directly affect the control of product quality. Figure 8 As shown, the tolerance zone for the 10 measurement points ① to ⑩ is 35 μm. In particular, measurement points ⑤ to ⑩ are on an inclined plane. In the figure, ① and ⑩ are the outer diameter measurement points, ② and ③ are the inner hole measurement points, and ⑤ to ⑩ are the raceway diameter measurement points. Changes in probe height significantly affect the measurement results, which places high demands on the measurement method and the repeatability of probe positioning. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems and provide a comprehensive measurement device for the outer ring of tapered roller bearings, which can effectively ensure the accuracy and repeatability of workpiece measurement.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A comprehensive measurement device for the outer ring dimensions of a tapered roller bearing includes a frame, an outer diameter measuring mechanism disposed at the bottom of the frame, and an inner diameter measuring mechanism disposed at the top of the frame.

[0006] The outer diameter measuring mechanism includes a base set at the bottom of the frame, a turntable set on the base and rotating on the base to support the outer ring of the bearing, and a clamping mechanism for fixing the outer ring of the bearing. The base is provided with an outer diameter measuring head for detecting the outer diameter of the outer ring of the bearing.

[0007] The inner diameter measuring mechanism includes a bracket and a lifting frame that is mounted on the side of the bracket and moves up and down on the bracket. The lifting frame is equipped with two inner diameter probes that cooperate with the inner diameter of the outer ring of the bearing for detecting the inner diameter of the outer ring of the bearing. The bottom of the bracket is symmetrically provided with height seats that are slidably connected to the bottom of the bracket. The sides of the height seats are provided with several first steps of different heights. Both sides of the lifting frame are provided with height limiting blocks that cooperate with the horizontal plane of the first steps.

[0008] Furthermore, the base is equipped with a first motor at its bottom to drive the turntable to rotate.

[0009] Furthermore, the clamping mechanism includes a limiting wheel that is disposed on the turntable and contacts the outer ring of the bearing, and a clamping wheel for clamping the outer ring of the bearing. The limiting wheel is symmetrically arranged with the center line of the outer ring of the bearing as the center. A clamping cylinder is provided on the base, and the output end of the clamping cylinder is connected to the bracket of the clamping wheel.

[0010] Furthermore, the lifting frame and the support are slidably connected by a guide rail slider pair, and the upper end of the support is provided with a lifting cylinder to drive the lifting frame to rise and fall.

[0011] Furthermore, the bottom of the bracket is provided with a first drive mechanism for moving the height seat.

[0012] Furthermore, the first drive mechanism includes a belt disposed at the bottom of the bracket and rotating in the front-rear direction at the bottom of the bracket, the belt being connected to the outside of the height seat via a connecting plate;

[0013] The bottom rear end of the bracket is equipped with a servo motor that drives the belt to rotate.

[0014] Furthermore, the inner diameter probe includes a left inner diameter probe and a right inner diameter probe, and the lifting frame is provided with a second driving mechanism that drives the left inner diameter probe and the right inner diameter probe to move synchronously in the same or opposite directions.

[0015] Furthermore, the second drive mechanism includes two forward and backward cylinders mounted on the lifting frame for driving the movement of the corresponding inner diameter probe.

[0016] Furthermore, the second driving mechanism includes a guide rod mounted on the lifting frame, a sleeve mounted on the upper end of the corresponding inner diameter probe and cooperating with the guide rod, a linkage mechanism mounted on the lifting frame to drive the two sleeves to move synchronously in the same or opposite directions, and a width seat mounted on the bracket at the middle position of the two inner diameter probes. The front side of the width seat is provided with several second steps, and the rear end of the inner diameter probe on the left side is provided with a width limiting block that cooperates with the second steps.

[0017] Furthermore, the linkage mechanism includes a second motor located at the bottom of the lifting frame and a drive wheel located on the output shaft of the second motor. The drive wheel is connected to the sleeves on both sides by connecting rods, and one end of the connecting rod is rotatably connected to the drive wheel.

[0018] The beneficial effects of this invention are:

[0019] 1. This invention includes a frame, an outer diameter measuring mechanism, and an inner diameter measuring mechanism. The outer diameter measuring mechanism includes a base and a turntable mounted on the base, with an outer diameter probe on the base. The inner diameter measuring mechanism includes a support and a lifting frame, with two inner diameter probes mounted on the lifting frame. The bottom of the support has a height seat slidably connected to the bottom of the support, and the side of the height seat has several first steps of different heights. The lifting frame has a height limiting block. When the height seat moves horizontally to the highest limit point, the lifting frame descends, causing the height limiting block to press on the uppermost first step. The inner diameter probes on both sides open synchronously and contact measurement point ③ for measurement. Simultaneously, the two outer diameter probes contact points ① and ② respectively. The turntable 202 drives the outer ring of the bearing to rotate, thereby completing the measurement of measurement point ③. Afterward, the height limiting block moves backward, corresponding to the second first step, and the operation is repeated to complete the measurement of measurement points ④-⑩ in sequence. Because the contact between the height limiting block and the height seat is mechanical, it can achieve high precision and stability. Therefore, this measurement method can effectively ensure the accuracy and repeatability of workpiece measurement. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the outer diameter measuring mechanism of the present invention. Figure 1 ;

[0023] Figure 3 This is a schematic diagram of the outer diameter measuring mechanism of the present invention. Figure 2 ;

[0024] Figure 4 This is a schematic diagram of the inner diameter measuring mechanism according to Embodiment 1 of the present invention;

[0025] Figure 5 This is a left view of the inner diameter measuring mechanism according to Embodiment 1 of the present invention;

[0026] Figure 6 This is a left view of the height seat in the front and rear position adjustment state according to Embodiment 1 of the present invention;

[0027] Figure 7 This is a left view of the inner diameter measuring mechanism in the measurement state according to Embodiment 1 of the present invention;

[0028] Figure 8 This is a cross-sectional view of the outer ring of the bearing of the present invention;

[0029] Figure 9 This is a schematic diagram of the inner diameter measuring mechanism according to Embodiment 2 of the present invention;

[0030] Figure 10 This is a front view of the inner diameter measuring mechanism according to Embodiment 2 of the present invention.

[0031] In the diagram: Rack 1;

[0032] The outer diameter measuring mechanism 2 consists of a base 201, a turntable 202, a first motor 203, a limit wheel 204, a clamping wheel 205, a clamping cylinder 206, and an outer diameter measuring head 207.

[0033] The inner diameter measuring mechanism 3, bracket 301, lifting frame 302, inner diameter probe 303, height seat 304, first step 305, height limit block 306, lifting cylinder 307, belt 308, servo motor 309, connecting plate 310, forward and backward cylinder 311, guide rod 312, sleeve 313, width seat 314, second step 315, width limit block 316, second motor 317, drive wheel 318, connecting rod 319. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0035] Example 1:

[0036] like Figure 1 As shown, a comprehensive measurement device for the outer ring dimensions of a tapered roller bearing includes a frame 1, an outer diameter measuring mechanism 2 disposed at the bottom of the frame 1, and an inner diameter measuring mechanism 3 disposed at the top of the frame 1.

[0037] like Figure 2 and Figure 3 As shown, the outer diameter measuring mechanism 2 includes a base 201 set at the bottom of the frame 1, a turntable 202 set on the base 201 and rotating on the base 201 to support the outer ring of the bearing, and a clamping mechanism for fixing the outer ring of the bearing. The base 201 is provided with an outer diameter measuring head 207 for detecting the outer diameter of the bearing outer ring. The outer diameter measuring head 207 is mounted on the base 201 by a column. There are two outer diameter measuring heads 207, which correspond to the two points of the bearing outer ring that need to be detected.

[0038] like Figure 4 and Figure 5As shown, the inner diameter measuring mechanism 3 includes a bracket 301 and a lifting frame 302 disposed on the side of the bracket 301 and raised and lowered on the bracket 301. The lifting frame 302 is provided with two inner diameter probes 303 that cooperate with the inner diameter of the outer ring of the bearing for detecting the inner diameter of the outer ring of the bearing. The bottom of the bracket 301 is symmetrically provided with height seats 304 that are slidably connected to the bottom of the bracket 301. The side of the height seat 304 is provided with several first steps 305 of different heights. Both sides of the lifting frame 302 are provided with height limiting blocks 306 that cooperate with the horizontal plane of the first step 305.

[0039] like Figure 6 As shown, during measurement, the height seat 304 moves horizontally to its highest limit point, and the lifting frame 302 descends, causing the height limiting block 306 to press against the uppermost first step. The inner diameter probes on both sides simultaneously open and contact measurement point ③ for measurement. At the same time, the two outer diameter probes 207 contact points ① and ② respectively. The turntable 202 drives the outer ring of the bearing to rotate, thus completing the measurement of measurement point ③. Afterwards, the height limiting block 306 moves backward to correspond to the second first step, and the operation is repeated to complete the measurements of measurement points ④-⑩ in sequence.

[0040] Because the contact between the height limit block 306 and the height seat 304 is mechanical, it can achieve high precision and stability. Therefore, this measurement method can effectively ensure the accuracy and repeatability of workpiece measurement.

[0041] The step block is a mechanical mechanism, and its inherent dimensional characteristics dictate that its size will not change. However, traditional lifting methods (servo, stepper, CNC systems, etc.) all have control errors, which directly lead to inaccurate dimensional measurements.

[0042] like Figure 2 As shown, the base 201 has a first motor 203 at its bottom that drives the turntable 202 to rotate.

[0043] like Figure 3 As shown, the clamping mechanism includes a limiting wheel 204 disposed on the turntable 202 and in contact with the outer ring of the bearing, and a clamping wheel 205 for clamping the outer ring of the bearing. The limiting wheel 204 is symmetrically arranged with the center line of the outer ring of the bearing as the center. In this embodiment, there are two limiting wheels 204, which are disposed in the rear half of the outer ring of the bearing and are symmetrically distributed on the left and right. A clamping cylinder 206 is provided on the base 201. The cylinder body of the clamping cylinder 206 is fixed on the base 201. The clamping wheel 205 is mounted on the bracket and rotates on the bracket. The output end of the clamping cylinder 206 is connected to the bracket of the clamping wheel 205.

[0044] like Figure 4As shown, the lifting frame 302 and the support 301 are slidably connected via a guide rail slider pair. The upper end of the support 301 is equipped with a lifting cylinder 307 that drives the lifting frame 302 to rise and fall. The cylinder body of the lifting cylinder 307 is fixed to the upper end of the support, and the piston rod end of the lifting cylinder 307 is connected to the lifting frame 302. The lifting cylinder 307 can also be driven by a motor and lead screw, which is readily apparent to those skilled in the art and will not be elaborated upon here.

[0045] like Figure 4 As shown, the bottom of the bracket 301 is provided with a first driving mechanism for moving the height seat 304.

[0046] The first driving mechanism includes a belt 308 disposed at the bottom of the bracket 301 and rotating in the front-to-back direction at the bottom of the bracket 301. The belt 308 is connected to the outer side of the height seat 304 via a connecting plate 310. A servo motor 309 for driving the belt is provided at the rear end of the bottom of the bracket 301. There are two belts 308, located on the outer sides of the two height seats 304 respectively. Pulleys are provided on both sides of the belts 308. The front pulley is supported and rotatably connected to the bottom of the bracket, and the rear pulley is connected to the output shaft of the servo motor 309. The servo motor 309 drives the belts on both sides to rotate synchronously. In this embodiment, the belt drive can be achieved by a motor, but a cylinder drive or a lead screw and nut drive can also be used. These are methods that are easy for those skilled in the art to understand and will not be elaborated on here.

[0047] like Figure 4 As shown, the inner diameter probe 303 includes a left inner diameter probe and a right inner diameter probe. The left inner diameter probe and the right inner diameter probe are distributed at two opposite points on the inner surface of the outer ring of the bearing. The lifting frame 302 is provided with a second driving mechanism to drive the left inner diameter probe and the right inner diameter probe to move synchronously in the same or opposite directions.

[0048] The second driving mechanism includes two forward and backward cylinders 311 mounted on the lifting frame 302 for driving the movement of the corresponding inner diameter probe 303. There are two forward and backward cylinders 311, corresponding to the left inner diameter probe and the right inner diameter probe respectively. The cylinder body end of the forward and backward cylinder 311 is fixed to the front end of the lifting frame 302, and the piston rod end of the forward and backward cylinder 311 is connected to the inner diameter probe 303.

[0049] In the initial state, the forward / reverse cylinder 311 drives the left and right inner diameter probes to retract, and the lifting frame will not interfere with the outer ring of the bearing when it moves down. After the lifting frame moves down to the correct position, the forward / reverse cylinder 311 drives the left and right inner diameter probes to contact the inner wall of the outer ring of the bearing, and the inner diameter of the outer ring of the bearing is detected as the outer ring of the bearing rotates.

[0050] Example 2:

[0051] like Figure 9 and Figure 10 As shown, the second driving mechanism includes a guide rod 312 mounted on the lifting frame 302, a sleeve 313 mounted on the upper end of the corresponding inner diameter probe 303 and cooperating with the guide rod 312, a linkage mechanism mounted on the lifting frame 302 to drive the two sleeves 313 to move synchronously in the same or opposite directions, and a width seat 314 mounted on the bracket 301 at the middle position of the two inner diameter probes 303. The front side of the width seat 314 is provided with several second steps 315, and the rear end of the left inner diameter probe 303 is provided with a width limiting block 316 that cooperates with the second steps 315. When the lifting frame descends to the required height, the linkage mechanism drives the two inner diameter probes 303 to open synchronously, and the left width limiting block 316 contacts the vertical surface of the corresponding second step 315. At this time, the inner diameter probe 303 contacts the inner wall of the bearing outer ring at the position to be detected. Through the mechanical contact between the second steps 315 of the width seat 314 and the width limiting block 316, the forward and backward movement of the inner diameter probe 303 can achieve high accuracy and stability.

[0052] The width seat 314 is located in the middle of the two inner diameter probes 303, and the width limiting block 316 is located inside the inner diameter probe 303 on the left and extends between the two inner diameter probes 303 to prevent interference between the width seat 314 and the inner diameter probe 303.

[0053] The linkage mechanism includes a second motor 317 located at the bottom of the lifting frame 302 and a drive wheel 318 located on the output shaft of the second motor 317. The drive wheel 318 is connected to the sleeves 313 on both sides via connecting rods 319. The inner end of the connecting rod 319 is rotatably connected to the drive wheel 318, the outer end of the left connecting rod 319 is rotatably connected to the rear end of the left sleeve, the outer end of the right connecting rod 319 is rotatably connected to the front end of the right sleeve, the inner end of the left connecting rod 319 is rotatably connected to the front end of the left half of the drive wheel 318, and the inner end of the right connecting rod 319 is rotatably connected to the rear end of the right half of the drive wheel 318. Before the lifting frame descends, the two inner diameter probes 303 overlap when viewed from the side. After the lifting frame descends to its position, the second motor 317 drives the drive wheel 318 to rotate clockwise. Under the action of the connecting rod 319, the inner diameter probes 303 on both sides open synchronously and make full contact with the inner wall of the bearing. The inner diameter probes 303 on both sides can be driven to open synchronously by one drive, eliminating the need for two drives. This reduces costs, and the mechanical linkage method ensures good synchronization, the same moving distance, and greater reliability.

[0054] The rest of the structure is the same as in Example 1.

[0055] In the description of the present invention, it should be noted that the terms "left", "right", "up", "down", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0056] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A tapered roller bearing outer ring comprehensive dimension detection apparatus characterized by, The application relates to a bearing outer diameter and inner diameter measuring device, which comprises a rack (1), an outer diameter measuring mechanism (2) arranged at the bottom of the rack (1) and an inner diameter measuring mechanism (3) arranged at the upper end of the rack (1). The outer diameter measuring mechanism (2) comprises a base (201) arranged at the bottom of the rack (1), a rotating disc (202) arranged on the base (201) and rotating on the base (201) for supporting a bearing outer ring and a clamping mechanism for fixing the bearing outer ring, and the base (201) is provided with an outer diameter measuring head (207) for detecting the outer diameter of the bearing outer ring. The inner diameter measuring mechanism (3) comprises a support (301) and a lifting frame (302) arranged on the side of the support (301) and lifting on the support (301), the lifting frame (302) is provided with two inner diameter measuring heads (303) matched with the inner diameter of the bearing outer ring for detecting the inner diameter of the bearing outer ring, the support (301) is provided with a height seat (304) symmetrically arranged at the bottom of the support (301) and connected with the bottom of the support (301) in a sliding mode, the height seat (304) is provided with a plurality of first steps (305) with different heights on the side, and the lifting frame (302) is provided with a height limiting block (306) matched with the horizontal plane of the first step (305) on the two sides. The inner diameter measuring head (303) comprises a left inner diameter measuring head and a right inner diameter measuring head, and the lifting frame (302) is provided with a second driving mechanism for driving the left inner diameter measuring head and the right inner diameter measuring head to move in the same direction or in the opposite direction synchronously. The second driving mechanism comprises a guide rod (312) arranged on the lifting frame (302), sleeve (313) arranged on the two sides of the upper end of the left inner diameter measuring head and the right inner diameter measuring head and matched with the guide rod (312), a linkage mechanism arranged on the lifting frame (302) and driving the sleeve (313) on the two sides to move in the same direction or in the opposite direction synchronously, and a width seat (314) arranged on the support (301) and located at the middle position of the left inner diameter measuring head and the right inner diameter measuring head, the width seat (314) is provided with a plurality of second steps (315) on the front side, and the left inner diameter measuring head is provided with a width limiting block (316) matched with the second step (315).

2. A combined dimension detection apparatus for a tapered roller bearing outer ring according to claim 1, characterized in that, The base (201) is provided with a first motor (203) for driving the rotating disc (202) to rotate.

3. A combined dimension detection apparatus for a tapered roller bearing outer ring according to claim 1, characterized in that, The clamping mechanism comprises a limiting wheel (204) arranged on the rotating disc (202) and matched with the bearing outer ring and a clamping wheel (205) for clamping the bearing outer ring, the limiting wheel (204) is symmetrically arranged with the center line of the bearing outer ring as the center, the base (201) is provided with a clamping cylinder (206), and the output end of the clamping cylinder (206) is connected with the support of the clamping wheel (205).

4. The combined dimension detection apparatus for the outer ring of a tapered roller bearing as set forth in claim 1, characterized in that, The lifting frame (302) and the support (301) are connected in a sliding mode through a guide rail and a sliding block pair, and the upper end of the support (301) is provided with a lifting cylinder (307) for driving the lifting frame (302) to lift.

5. The combined dimension detection apparatus for the outer ring of a tapered roller bearing as set forth in claim 1, characterized in that, The bottom of the support (301) is provided with a first driving mechanism for driving the height seat (304) to move.

6. A combined dimension detection apparatus for a tapered roller bearing outer ring according to claim 5, characterized in that, The first driving mechanism comprises a belt (308) arranged at the bottom of the support (301) and running in the front-rear direction at the bottom of the support (301), and the belt (308) is connected with the outside of the height seat (304) through a connecting plate (310); The rear end of the bottom of the support (301) is provided with a servo motor (309) for driving the belt to run.

7. A combined dimension detection apparatus for a tapered roller bearing outer ring according to claim 1, characterized in that, The second driving mechanism comprises two advance-retreat air cylinders (311) arranged on the lifting frame (302) and used for driving the corresponding left inner diameter measuring head and right inner diameter measuring head to move.

8. A combined dimension detection apparatus for a tapered roller bearing outer ring according to claim 1, characterized in that, The linkage mechanism comprises a second motor (317) arranged at the bottom of the lifting frame (302), a driving wheel (318) arranged on the output shaft of the second motor (317), and the driving wheel (318) is connected with the sleeves (313) on both sides through connecting rods (319), and one end of the inner side of the connecting rod (319) is rotatably connected with the driving wheel (318).

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