A grinding device for keyway in inner hole of a workpiece

Abstract

This utility model relates to the field of grinding technology, specifically to a grinding device for keyway grinding of workpiece inner holes. It includes a base plate and a moving component. The base plate has an accommodating opening, and a top block and a bottom block are respectively provided at the top and bottom of the accommodating opening. The top and bottom blocks extend horizontally in the same direction and are perpendicular to the base plate. Top grooves and bottom grooves are respectively provided on the sides of the top and bottom blocks that are close to each other. The moving component is located between the top and bottom blocks, and its top and bottom are slidably connected within the top and bottom grooves, respectively. In use, this grinding device for keyway grinding of workpiece inner holes uses a reciprocating drive mechanism to repeatedly move the grinding mechanism to grind the keyway of a workpiece fixed within a fixed mechanism. The reciprocating drive mechanism ensures grinding effect and efficiency. Furthermore, during the grinding process, the workpiece can be moved by a moving motor to deepen the keyway depth, meaning that keyways of different depths can be processed using the same honing rod, offering flexibility in use.

Description

Technical Field

[0001] This utility model relates to the field of grinding technology, specifically to a grinding device for keyway grinding of workpiece inner hole. Background Technology

[0002] Keyways play several important roles in mechanical design, including (1) fixing and connecting: the main function of a keyway is to fix two parts together to prevent relative movement. In the connection between a motor and a reducer, a keyway can ensure the synchronous rotation of the motor shaft and the reducer input shaft, preventing loosening or falling off, and ensuring the stability and reliability of the transmission; (2) transmitting torque: the design of a keyway increases the contact area between the shaft and the parts, dispersing pressure, thereby improving the shear resistance and load-bearing capacity of the transmission. In the connection between a motor and a reducer, a keyway can transmit a large torque, ensuring efficient power transmission; (3) positioning and fitting: the keyway also plays a role in positioning and fitting, ensuring precise position and speed conversion between two parts. Through the restriction of the keyway, unnecessary swaying and offset can be avoided, ensuring the smooth operation of the mechanical system; (4) installation and disassembly: the key design makes the installation and disassembly process more convenient, facilitating maintenance and replacement. The design with a keyway is particularly suitable in factory production lines, automobile gearboxes and other scenarios, providing stable support and drive. Therefore, the setting of a keyway is indispensable in many mechanical structures.

[0003] This invention provides a grinding device for keyway in the inner hole of a workpiece to achieve the grinding of keyway grooves in the workpiece, ensuring the convenience, efficiency, and flexibility of keyway machining. Utility Model Content

[0004] This utility model provides a grinding device for keyway grinding of workpiece inner hole to achieve efficient and flexible grinding of the groove in the workpiece.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a workpiece inner hole keyway grinding device is provided, including a base plate and a moving part. The base plate is provided with an accommodating opening. The top and bottom of the accommodating opening are respectively provided with a top block and a bottom block. The top block and the bottom block extend horizontally in the same direction and are both perpendicular to the base plate. The sides of the top block and the bottom block that are close to each other are respectively provided with a top groove and a bottom groove. The moving part is disposed between the top block and the bottom block, and the top and bottom are slidably connected in the top groove and the bottom groove, respectively.

[0006] It also includes a reciprocating drive mechanism and a fixing mechanism. The reciprocating drive mechanism is mounted on the base plate and connected to a moving part. The end of the moving part away from the base plate is provided with a grinding structure. The fixing mechanism is located on the side of the grinding structure away from the base plate and fixes the workpiece.

[0007] The moving part is driven by a reciprocating drive mechanism, and the internal keyway of the workpiece fixed on the fixed mechanism is ground by the reciprocating movement of the grinding structure on the moving part.

[0008] Furthermore, the reciprocating drive mechanism includes a drive motor, an output shaft, a transmission plate, a connecting rod, a connecting member, and a rotating shaft. The drive motor is mounted on the base plate, and the output shaft is connected to the drive motor. One side of the transmission plate is fixed to the output shaft, and the other side is fixed to the connecting shaft. One end of the connecting rod is rotatably sleeved on the connecting shaft. The connecting member is U-shaped, and both ends are fixed to the side end of the moving part near the base. The two ends of the rotating shaft are respectively connected to the moving part and the connecting member, and the other end of the connecting rod is rotatably sleeved on the rotating shaft. A limiting sleeve is also provided at the end of the connecting shaft away from the transmission plate.

[0009] Furthermore, the moving part is square in shape and has a drive opening in the middle. The drive motor is located on one side of the moving part, the connecting rod is located on the other side of the moving part, and the output shaft and transmission plate are arranged through the driving opening through the moving part.

[0010] Furthermore, the grinding structure includes a connecting rod, a grinding rod, and a honing strip. One end of the connecting rod is fixed to the end of the moving part away from the base plate. One end of the grinding rod is connected to the other end of the connecting rod, and the honing strip is disposed on the side of the grinding rod.

[0011] Furthermore, the fixing mechanism includes a base, a connecting block, and two movable seats. The two movable seats are connected to the upper surface of the base, and the connecting block is connected to the side of the two movable seats near the grinding structure. The workpiece is fixed inside the connecting block.

[0012] Furthermore, the fixing mechanism also includes a moving motor, a lead screw, and a connecting plate. The moving motor and the connecting plate are respectively located on both sides of the base. The lead screw is driven through the two moving seats, with one end connected to the moving motor and the other end rotatably connected to the connecting plate.

[0013] Furthermore, the bottom of the movable seat is provided with an inverted T-shaped slider, and the base is provided with a groove adapted to the slider, and the slider is slidably disposed in the groove.

[0014] Furthermore, the connecting block is provided with a workpiece groove adapted to the workpiece, the workpiece is placed in the workpiece groove, and the end near the grinding structure is flush with the side of the connecting block; the side of the connecting block near the moving seat is provided with a through hole communicating with the workpiece groove, the diameter of the through hole is smaller than the outer diameter of the workpiece near the through hole, but larger than the inner diameter of the workpiece, and the distance between the side of the through hole and the inner side of the workpiece is greater than the depth of the keyway to be opened.

[0015] Furthermore, it also includes two limiting mechanisms, which are disposed on the connecting block and located on both sides of the two pairs of workpiece grooves. The limiting mechanism includes a T-shaped limiting member and a limiting plate. The end of the limiting member is connected to the connecting block. The limiting plate is rotatably disposed on the limiting member and can rotate to the side end of the workpiece. The rotational friction between the limiting plate and the limiting member is such that the connecting plate does not rotate when no external force is applied.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The workpiece inner hole keyway grinding device of this utility model, when in use, drives the grinding mechanism to move repeatedly to grind the keyway of the workpiece fixed in the fixed mechanism through the reciprocating drive mechanism. The reciprocating drive mechanism can ensure the grinding effect and efficiency. In addition, the workpiece can be moved by the moving motor during the grinding process to deepen the keyway depth. That is, the same honing strip can be used to process keyways of different depths, which is flexible in use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the structure of a workpiece inner hole keyway grinding device according to the present invention (without a fixing mechanism).

[0019] Figure 2 This is a schematic diagram of the overall structure of a workpiece inner hole keyway grinding device according to the present invention.

[0020] Figure 3 This is a cross-sectional view of the fixing mechanism of this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the workpiece after the keyway of this utility model has been ground.

[0022] Figure 5 For the present utility model Figure 3 A cross-sectional view of the workpiece fixed by the fixing mechanism in the diagram.

[0023] Figure 6 This is a schematic diagram showing that the connecting block of this utility model has a limiting mechanism on its side.

[0024] The components are as follows: 1. Seat plate; 2. Moving part; 3. Accommodating opening; 4. Top block; 5. Bottom block; 6. Top groove; 7. Bottom groove; 8. Reciprocating drive mechanism; 81. Drive motor; 82. Output shaft; 83. Transmission plate; 84. Connecting rod; 85. Connecting part; 86. Rotating shaft; 87. Limiting sleeve; 88. Connecting shaft; 9. Fixing mechanism; 91. Base; 92. Connecting block; 93. Moving seat; 94. Moving motor; 95. Lead screw; 96. Connecting plate; 97. Sliding part; 98. Slide groove; 10. Grinding structure; 101. Connecting rod; 102. Grinding rod; 103. Honing strip; 11. Drive opening; 12. Part groove; 13. Through hole; 14. Limiting mechanism; 141. Limiting part; 142. Limiting plate; 15. Keyway; 16. Workpiece. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] refer to Figure 1-6 The present invention describes a workpiece inner hole keyway grinding device through the following embodiments.

[0027] Example 1: This example provides a grinding device for keyway of workpiece inner hole, including a base plate 1 and a moving part 2. The base plate 1 is provided with a receiving opening 3. The top of the receiving opening 3 and the top of the top are respectively provided with a top block 4 and a bottom block 5. The top block 4 and the bottom block 5 extend horizontally in the same direction and are both perpendicular to the base plate 1. The sides of the top block 4 and the bottom block 5 that are close to each other are respectively provided with a top groove 6 and a bottom groove 7. The moving part 2 is located between the top block 4 and the bottom block 5, and its top and bottom are slidably connected in the top groove 6 and the bottom groove 7, respectively.

[0028] This embodiment also includes a reciprocating drive mechanism 8 and a fixing mechanism 9. The reciprocating drive mechanism 8 is disposed on the base plate 1 and connected to the moving part 2. The end of the moving part 2 away from the base plate 1 is provided with a grinding structure 10. The fixing mechanism 9 is disposed on the side of the grinding structure 10 away from the base plate 1, and the fixing mechanism 9 fixes the workpiece.

[0029] In this embodiment, the reciprocating drive mechanism 8 drives the moving part 2 to move. By reciprocating the grinding structure 10 provided on the moving part 2, the workpiece 16 fixed on the fixing mechanism 9 is ground for the inner hole keyway 15, which can ensure the grinding effect and efficiency.

[0030] Example 2: Based on the above examples, the reciprocating drive mechanism 8 of this example includes a drive motor 81, an output shaft 82, a transmission plate 83, a connecting rod 84, a connecting member 85, and a rotating shaft 86. The drive motor 81 is mounted on the base plate 1. The output shaft 82 and the drive motor 81 are connected in a transmission manner. One side of the transmission plate 83 is fixed to the output shaft 82, and the other side is fixed to the connecting shaft 88. One end of the connecting rod 84 is rotatably sleeved on the connecting shaft. The connecting member 85 is U-shaped, and both ends are fixed to the side ends of the moving member 2 near the base 91. The two ends of the rotating shaft 86 are respectively connected to the moving member 2 and the connecting member 85. The other end of the connecting rod 84 is rotatably sleeved on the rotating shaft 86. A limiting sleeve 87 is also provided at the end of the connecting shaft away from the transmission plate 83.

[0031] The specific operating principle of this embodiment is as follows: the drive motor 81 drives the output shaft 82 to rotate, which in turn drives the transmission plate 83 to rotate around the output shaft 82 as the central axis, which in turn drives the connecting shaft fixed on the other side of the transmission plate 83 to rotate around the output shaft 82, thereby converting the rotation of the connecting shaft into the reciprocating movement of the connecting rod 84 in the horizontal direction. The reciprocating movement of the connecting rod 84 drives the moving part 2 to reciprocate, which in turn drives the grinding structure 10 to reciprocate to grind the keyway of the workpiece.

[0032] Example 3: Based on the above examples, the moving part 2 in this example is square in shape and has a drive opening 11 in the middle. The drive motor 81 is located on one side of the moving part 2, the connecting rod 84 is located on the other side of the moving part 2, and the output shaft 82 and the transmission plate 83 are arranged through the drive opening 11 to pass through the moving part 2.

[0033] Example 4: Based on the above examples, the grinding structure 10 of this example includes a connecting rod 101, a grinding rod 102, and a honing strip 103. One end of the connecting rod 101 is fixed to the end of the moving part 2 away from the seat plate 1. One end of the grinding rod 102 is connected to the other end of the connecting rod 101. The honing strip 103 is disposed on the side of the grinding rod 102.

[0034] In this embodiment, the grinding structure 10 drives the connecting rod 101, grinding rod 102 and honing strip 103 to move as a whole through the reciprocating movement of the moving part 2. This allows the grinding rod 102 and honing strip 103 to reciprocate and grind within the inner hole of the workpiece, forming a keyway. The grinding is convenient and efficient.

[0035] Example 5: Based on the above examples, the fixing mechanism 9 of this example includes a base 91, a connecting block 92, and two movable seats 93. The two movable seats 93 are connected to the upper surface of the base 91, and the connecting block 92 is connected to the side of the two movable seats 93 near the grinding structure 10. The workpiece is fixed in the connecting block 92.

[0036] Example 6: Based on the above examples, the fixing mechanism 9 of this example further includes a moving motor 94, a lead screw 95, and a connecting plate 96. The moving motor 94 and the connecting plate 96 are respectively located on both sides of the base 91. The lead screw 95 is driven through the two moving seats 93, with one end connected to the moving motor 94 and the other end rotatably connected to the connecting plate 96.

[0037] In this embodiment, the rotation of the movable motor 94 drives the rotation of the lead screw 95, which in turn drives the movable seat 93 to move and the workpiece placed in the connecting plate 96 to move, thereby increasing or decreasing the depth of the keyway.

[0038] Example 7: Based on the above examples, the bottom of the movable seat 93 in this example is provided with an inverted T-shaped slider 97, and the base 91 is provided with a groove 98 adapted to the slider 97. The connecting member 85 is slidably disposed in the groove 98. In this example, the slider 97 is confined within the groove 98, thereby limiting the movable seat 93 and ensuring that the movable seat 93 can move with the rotation of the lead screw 95.

[0039] Example 8: Based on the above examples, the connecting block 92 in this example is provided with a workpiece groove 12 adapted to the workpiece. The workpiece is placed in the workpiece groove 12, and the end near the grinding structure 10 is flush with the side of the connecting block 92. The side of the connecting block 92 near the moving seat 93 is provided with a through hole 13 communicating with the workpiece groove 12. The diameter of the through hole 13 is smaller than the outer diameter of the workpiece near the through hole 13, but larger than the inner diameter of the workpiece. The distance between the side of the through hole 13 and the inner side of the workpiece is greater than the depth of the keyway that needs to be opened.

[0040] In this embodiment, the workpiece is placed completely in the workpiece groove 12, and then the grinding rod 102 of the grinding structure 10 drives the honing strip 103 to extend into the workpiece to repeatedly grind the inner wall of the workpiece to form a keyway. The setting of the through hole 13 and the setting of the diameter of the through hole 13 are for positioning and installation of the workpiece, and also to facilitate the repeated movement and grinding of the grinding rod 102.

[0041] Example 9, based on the above examples, further includes two limiting mechanisms 14. The limiting mechanisms 14 are disposed on the connecting block 92 and located on both sides of the two pairs of workpiece grooves 12. The limiting mechanism 14 includes a T-shaped limiting member 141 and a limiting plate 142. The end of the limiting member 141 is connected to the connecting block 92. The limiting plate 142 is rotatably disposed on the limiting member 141 and can rotate to the workpiece side. The rotational friction between the limiting plate 142 and the limiting member 141 is such that the connecting plate 96 does not rotate when there is no external force.

[0042] In this embodiment, the limiting mechanism 14 can limit the workpiece and prevent it from being impacted and falling out of the parting groove 12 during processing, thus affecting the processing.

[0043] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, all modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope of the present utility model. The technical content for which protection is sought in the present utility model has been fully recorded in the technical requirements.

Claims

1. A grinding device for keyway in the inner hole of a workpiece, characterized in that: The device includes a seat plate and a movable component. The seat plate has an accommodating opening. The top and bottom of the accommodating opening are respectively provided with a top block and a bottom block. The top block and the bottom block extend horizontally in the same direction and are both perpendicular to the seat plate. The sides of the top block and the bottom block that are close to each other are respectively provided with a top groove and a bottom groove. The movable component is located between the top block and the bottom block, and its top and bottom are slidably connected in the top groove and the bottom groove, respectively. It also includes a reciprocating drive mechanism and a fixing mechanism. The reciprocating drive mechanism is mounted on the base plate and connected to a moving part. The end of the moving part away from the base plate is provided with a grinding structure. The fixing mechanism is located on the side of the grinding structure away from the base plate and fixes the workpiece. The moving part is driven by a reciprocating drive mechanism, and the internal keyway of the workpiece fixed on the fixed mechanism is ground by the reciprocating movement of the grinding structure on the moving part.

2. The workpiece inner hole keyway grinding device according to claim 1, characterized in that: The reciprocating drive mechanism includes a drive motor, an output shaft, a transmission plate, a connecting rod, a connecting member, and a rotating shaft. The drive motor is mounted on the base plate, and the output shaft is connected to the drive motor. One side of the transmission plate is fixed to the output shaft, and the other side is fixed to the connecting shaft. One end of the connecting rod is rotatably sleeved on the connecting shaft. The connecting member is U-shaped, and both ends are fixed to the side ends of the moving part near the base. The two ends of the rotating shaft are respectively connected to the moving part and the connecting member, and the other end of the connecting rod is rotatably sleeved on the rotating shaft. A limiting sleeve is also provided at the end of the connecting shaft away from the transmission plate.

3. The workpiece inner hole keyway grinding device according to claim 2, characterized in that: The moving part is square in shape and has a drive opening in the middle. The drive motor is located on one side of the moving part, the connecting rod is located on the other side of the moving part, and the output shaft and transmission plate are arranged through the driving opening through the moving part.

4. The workpiece inner hole keyway grinding device according to claim 3, characterized in that: The grinding structure includes a connecting rod, a grinding rod, and a honing strip. One end of the connecting rod is fixed to the end of the moving part away from the base plate. One end of the grinding rod is connected to the other end of the connecting rod. The honing strip is disposed on the side of the grinding rod.

5. The workpiece inner hole keyway grinding device according to claim 4, characterized in that: The fixing mechanism includes a base, a connecting block, and two movable seats. The two movable seats are connected to the upper surface of the base, and the connecting block is connected to the side of the two movable seats near the grinding structure. The workpiece is fixed inside the connecting block.

6. The workpiece inner hole keyway grinding device according to claim 5, characterized in that: The fixing mechanism also includes a moving motor, a lead screw, and a connecting plate. The moving motor and the connecting plate are respectively located on both sides of the base. The lead screw is driven through the two moving seats, with one end connected to the moving motor and the other end rotatably connected to the connecting plate.

7. The workpiece inner hole keyway grinding device according to claim 6, characterized in that: The bottom of the movable seat is provided with an inverted T-shaped slider, and the base is provided with a groove that adapts to the slider, and the slider is slidably disposed in the groove.

8. The workpiece inner hole keyway grinding device according to claim 5, characterized in that: The connecting block has a groove adapted to the workpiece. The workpiece is placed in the groove, and the end near the grinding structure is flush with the side of the connecting block. The side of the connecting block near the moving seat has a through hole that communicates with the groove. The diameter of the through hole is smaller than the outer diameter of the workpiece near the through hole, but larger than the inner diameter of the workpiece. The distance between the side of the through hole and the inner side of the workpiece is greater than the depth of the keyway that needs to be opened.

9. The workpiece inner hole keyway grinding device according to claim 8, characterized in that: It also includes two limiting mechanisms, which are set on the connecting block and located on both sides of the two pairs of workpiece grooves. The limiting mechanism includes a T-shaped limiting member and a limiting plate. The end of the limiting member is connected to the connecting block. The limiting plate is rotatably set on the limiting member and can rotate to the side end of the workpiece. The rotational friction between the limiting plate and the limiting member is such that the connecting plate does not rotate when there is no external force.

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