A bushing reaming and polishing device

Abstract

The present application relates to the technical fields of reaming processing, and discloses a shaft sleeve reaming and polishing device, which comprises a mounting seat, a chuck for fixing a shaft sleeve is arranged on the top surface of the mounting seat, a sliding seat is slidingly arranged on the top surface of the mounting seat, a rotating sleeve is arranged in the sliding seat and can rotate out of the sliding seat, a grinding head is fixedly arranged at one end of the rotating sleeve, a grinding edge is arranged on the side wall of the grinding head, and a polishing block for polishing the inner wall of the shaft sleeve is arranged on the outer wall of the rotating sleeve. The grinding diameter of the grinding edge and the polishing block is adjusted by the adjusting assembly, so that the grinding edge and the polishing block can synchronously grind the inner wall of the shaft sleeve. The surface quality of the inner wall of the shaft sleeve is improved while the grinding edge is rapidly ground, and the grinding edge and the polishing block are always in a concentric state, so that repeated positioning and clamping during reaming and polishing is avoided, and the processing efficiency and the processing precision are further improved.

Description

Technical Field

[0001] This invention relates to the field of hole reaming technology, specifically to a bushing hole reaming and grinding device. Background Technology

[0002] Hole reaming is a metalworking process used to enlarge the diameter of a hole or change its shape. Hole reaming processes include various methods such as mechanical reaming, cutting reaming, stamping reaming, and heat treatment reaming. Hole reaming is involved in various industries and fields. In the current technology, drilling is used for hole reaming, but the machining accuracy and surface roughness are insufficient. Therefore, after hole reaming, grinding is required to eliminate local unevenness on the hole wall, improve the cylindricity and straightness of the hole, thereby improving the dimensional accuracy of the hole, and at the same time, the size of the hole can be finely adjusted.

[0003] For example, Chinese Patent CN119910523A discloses a bushing reaming device for automotive parts production, including a worktable with an equipment box fixedly mounted on its top. A rotating adjustment component limits the grinding component, and then a drive component drives the grinding component, fixedly mounted at its output end, to rotate, thus grinding the inner wall of the bushing. During grinding, a moving component drives a clamping component to reciprocate, causing the bushing to move back and forth on the outer surface of the grinding component, expanding its inner diameter. Once expanded to a certain size, the bottom of the grinding component, in conjunction with the adjustment component, prevents further grinding and expansion of the bushing's inner diameter. This allows for adjustment and control of the bushing's inner diameter grinding size without repeated measurements, thereby improving the reaming efficiency of the bushing reaming device for automotive parts production.

[0004] When machining the bushing using the above method, although the machining quality of the inner wall of the bushing is improved to some extent by grinding the hole, the machining efficiency is relatively low. When dealing with a large machining thickness, the inner wall of the bushing needs to be repeatedly ground, which makes it impossible to ensure the machining accuracy and surface roughness of the inner wall of the bushing during the repeated grinding process. Summary of the Invention

[0005] The purpose of this invention is to provide a bushing reaming and grinding device to solve at least one technical problem existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a bushing reaming and grinding device, comprising a mounting base, a chuck for fixing the bushing is provided on the top surface of the mounting base, a sliding seat is slidably mounted on the top surface of the mounting base, a rotating sleeve that extends out of the sliding seat and can rotate is provided inside the sliding seat, a grinding head is fixedly mounted on one end of the rotating sleeve, a grinding blade is provided on the side wall of the grinding head, and a grinding block for grinding the inner wall of the bushing is provided on the outer wall of the rotating sleeve;

[0007] It also includes an adjustment component for adjusting the grinding diameter of the grinding blade and the grinding block.

[0008] Preferably, the adjusting component includes multiple sets of inclined grooves formed inside the grinding head, each set of inclined grooves having a sliding block slidably installed in it, the grinding blade being fixedly installed on the side wall of the sliding block, a fixed shaft being fixedly installed inside the grinding head, a sliding ring being installed on the outer wall of the fixed shaft, a slot being formed on the side wall of the sliding block, and a pin being provided on the outer wall of the sliding ring being able to slide within the slot.

[0009] Preferably, the adjusting assembly further includes a fixed sleeve fixedly installed on the side wall of the grinding head. The fixed sleeve is fixedly connected to the rotating sleeve via a connector. A piston plate is fixedly connected to the end of the sliding ring that passes through the fixed sleeve. The piston plate is slidably installed on the inner wall of the fixed sleeve, and a compression spring is provided between its side wall and the side wall of the grinding head. A partition is fixedly installed on the inner wall of the fixed sleeve. A rotating rod is rotatably connected to one end of the fixed shaft that passes through the partition. A sliding disc that can be slidably adjusted is installed on the inner wall of the fixed sleeve. The cavity between the partition and the sliding disc is filled with hydraulic oil, and the cavity is connected to the space between the side wall of the grinding head and the piston plate via a pipe embedded in the fixed sleeve.

[0010] Preferably, the outer wall of the rotating rod is slidably mounted with multiple sets of protrusions via a flat key, and the sliding disk is rotatably mounted with multiple sets of locking blocks that can engage or disengage with the protrusions. Each set of locking blocks is provided with a torsion spring at the rotatable connection between it and the sliding disk. The inner wall of the fixed sleeve is provided with an inclined groove, and the outer wall of the sliding disk is provided with a sliding pin that can slide within the inclined groove.

[0011] Preferably, the connector includes a rotating shaft installed in the sliding seat and capable of rotation. One end of the rotating shaft that extends out of the sliding seat is fixedly connected to a universal joint between it and the rotating rod. The rotating rod can slide along the outer wall of the fixed shaft. The outer walls of the rotating sleeve and the fixed sleeve that are close to each other are connected by a ball joint to multiple sets of elastic telescopic rods. One end of the multiple sets of elastic telescopic rods is connected to a limit ring by a ball joint.

[0012] Preferably, a fixing ring is fixedly installed on the outer wall of the rotating sleeve, a rotating disk is slidably installed on the inner side wall of the fixing ring, an arc-shaped groove is opened on the side wall of the rotating disk, multiple sets of through holes are opened on the ring surface of the fixing ring, a sliding rod is slidably installed in the through holes, a grinding block is fixedly installed on one end of the sliding rod, a limiting pin that can slide in the arc-shaped groove is provided on the other end of the sliding rod, a rotating block is fixedly installed on the outer wall of the rotating shaft, a groove is opened on the outer wall of the rotating sleeve, and the rotating block is fixedly connected to the rotating disk by a slider slidably installed in the groove.

[0013] Preferably, the universal joint is fitted with a bending spring.

[0014] Preferably, the elastic telescopic rods on the same side are inclined in the same direction.

[0015] Preferably, the grinding edge has an inclination angle of ten to fifteen degrees with respect to the horizontal line.

[0016] Preferably, the sliding seat is provided with a gear set that can drive the rotating sleeve and the rotating shaft to rotate respectively.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] I. This invention adjusts the grinding diameter of the grinding blade and the grinding block by adjusting the component, so that the grinding blade and the grinding block grind the inner wall of the bushing simultaneously. While using the grinding blade to grind quickly, the surface quality of the inner wall of the bushing is improved. Moreover, since the grinding blade and the grinding block are always in a concentric state, the repeated positioning and clamping when hole enlargement and grinding are performed separately are avoided, further improving the processing efficiency and processing accuracy.

[0019] II. The present invention provides a torsion spring at the rotational connection between each set of locking blocks and the sliding disk. When a stepped through hole needs to be machined inside the bushing, the grinding diameter of the grinding blade is different from that of the grinding block. That is, when the grinding blade expands to the preset value and the grinding block still needs to continue to expand, the grinding blade cannot expand due to the influence of the inner wall of the bushing. When the external drive structure drives the rotating rod and the protrusion to rotate, the locking block breaks through the torsion spring limit and starts to rotate, disengaging from the engagement with the protrusion. That is, the rotating rod and the protrusion rotate freely, and the grinding diameter of the grinding block can be adjusted.

[0020] Third, this invention separates the grinding section and the polishing section through a connector, allowing them to enter different processing stages. By observing whether the universal joint rotates, it can be confirmed whether the centers of different stepped sections coincide. If the universal joint does not deflect, the grinding section and polishing section can be compared to confirm whether the centers of the multiple steps are all at the same center. If the universal joint deflects, it indicates that the center of the grinding edge stage and the center of the polishing block stage have deviated. At the same time, it drives the rotating rod to slide along the outer wall of the fixed shaft, increasing the cavity volume between the partition and the sliding disk, causing the grinding edge to retract quickly, avoiding incorrect processing of the bushing, and combining hole enlargement, grinding and measurement to further improve the processing quality. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a side cross-sectional view of the present invention;

[0023] Figure 3 In this invention Figure 2 A schematic diagram of the isometric structure;

[0024] Figure 4 This is a partial three-dimensional structural diagram of the grinding blade, grinding block, and related structures in this invention;

[0025] Figure 5 In this invention Figure 4 Side view sectional view;

[0026] Figure 6 This is a side cross-sectional view of the elastic telescopic rod when it is vertically installed in this invention;

[0027] Figure 7 This is a cross-sectional view of the grinding block and its related structures in this invention. Figure 1 ;

[0028] Figure 8 This is a cross-sectional view of the grinding block and its related structures in this invention. Figure 2 ;

[0029] Figure 9 In this invention Figure 8 A schematic diagram of the isometric structure;

[0030] Figure 10 This is a side cross-sectional view of the sliding disk in this invention;

[0031] Figure 11 In this invention Figure 10 A schematic diagram of the isometric structure.

[0032] In the diagram: 1. Mounting base; 2. Sliding seat; 3. Rotating sleeve; 4. Rotating shaft; 5. Fixed sleeve; 6. Grinding head; 7. Grinding blade; 8. Fixed ring; 9. Grinding block; 10. Sliding rod; 11. Rotating disk; 12. Arc groove; 13. Limiting ring; 14. Sliding block; 15. Fixed shaft; 16. Sliding ring; 17. Piston plate; 18. Compression spring; 19. Partition plate; 20. Rotating rod; 21. Sliding disk; 22. Universal joint; 23. Elastic telescopic rod; 24. Rotating block; 25. Locking block; 26. Protrusion. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1 to 11 The present invention provides a technical solution: a bushing reaming and grinding device, including a mounting base 1, a chuck for fixing the bushing on the top surface of the mounting base 1, a sliding base 2 slidably mounted on the top surface of the mounting base 1, a rotating sleeve 3 that passes through the sliding base 2 and can rotate inside the sliding base 2, a grinding head 6 fixedly mounted on one end of the rotating sleeve 3, a grinding blade 7 on the side wall of the grinding head 6, and a grinding block 9 for grinding the inner wall of the bushing on the outer wall of the rotating sleeve 3;

[0035] It also includes an adjustment component for adjusting the grinding diameter of the grinding blade 7 and the grinding block 9.

[0036] In use, the bushing is first fixedly installed in the chuck on the top surface of the mounting base 1, and the shaft center of the bushing is adjusted to be aligned with the axis of the rotating sleeve 3. Then, the adjustment assembly is activated to adjust the grinding diameter of the grinding blade 7 to the preset value. Subsequently, an external drive structure (such as a cylinder) drives the sliding seat 2 to allow the grinding head 6 to enter the bushing. The rotating sleeve 3 then rotates, causing the grinding blade 7 to grind the inner wall of the bushing. Because the grinding blade 7 is made of carbide or other hard tools, the rotating sleeve 3 can quickly grind the inner wall of the bushing, causing the inner diameter of the bushing to rapidly approach the preset inner diameter. When the grinding blade... After the 7th part enters the bushing a certain distance, the sleeve 3 is rotated to drive the grinding block 9 into the bushing. After adjusting the grinding diameter of the grinding block 9 to be the same as the preset inner diameter of the bushing by adjusting the component, the inner wall of the bushing can be ground by the grinding blade 7 at the same time as the inner wall of the bushing, thereby improving the surface quality of the inner wall of the bushing and reducing the friction between the bushing and the shaft. Since the grinding diameter of the grinding blade 7 and the grinding block 9 are adjusted separately, the inner wall of the bushing can also be processed in a stepped manner by delaying the diameter of the grinding block 9 and synchronizing it with the grinding blade 7, so as to meet the needs of different shafts for the bushing.

[0037] In this way, by adjusting the grinding diameter of the grinding blade 7 and the grinding block 9, the grinding blade 7 and the grinding block 9 can grind the inner wall of the bushing synchronously. While using the grinding blade 7 to grind quickly, the surface quality of the inner wall of the bushing is improved. Since the grinding blade 7 is always concentric with the grinding block 9, the repeated positioning and clamping when hole enlargement and grinding are performed separately are avoided. This not only further improves the processing efficiency and processing accuracy, but also allows the inner wall of the bushing to be processed in a stepped manner by delaying the diameter of the grinding block 9 and synchronizing it with the grinding blade 7.

[0038] Furthermore, the adjustment assembly includes multiple sets of inclined slots opened in the grinding head 6, each set of inclined slots having a sliding block 14 slidably installed in it, the grinding blade 7 being fixedly installed on the side wall of the sliding block 14, a fixed shaft 15 being fixedly installed in the grinding head 6, a sliding ring 16 being installed on the outer wall of the fixed shaft 15, a slot being opened on the side wall of the sliding block 14, and a pin being provided on the outer wall of the sliding ring 16 being able to slide in the slot.

[0039] The above embodiments provide a specific implementation method for adjusting the grinding diameter of the grinding blade 7. See details below. Figure 5 When the external drive structure drives the sliding ring 16 to slide along the outer wall of the fixed shaft 15, the sliding ring 16 drives the sliding block 14 and the grinding blade 7 to slide together along the inclined groove inside the grinding head 6 through the pin. When the sliding ring 16 moves to the left in the figure, the grinding diameter of the grinding blade 7 decreases, and when the sliding ring 16 moves to the right in the figure, the grinding diameter of the grinding blade 7 increases, thus completing the adjustment of the grinding diameter of the grinding blade 7.

[0040] Furthermore, the adjustment assembly also includes a fixed sleeve 5 fixedly installed on the side wall of the grinding head 6. The fixed sleeve 5 is fixedly connected to the rotating sleeve 3 through a connector. A piston plate 17 is fixedly connected to the end of the sliding ring 16 that passes through the fixed sleeve 5. The piston plate 17 is slidably installed on the inner wall of the fixed sleeve 5, and a compression spring 18 is provided between its side wall and the side wall of the grinding head 6. A partition 19 is fixedly installed on the inner wall of the fixed sleeve 5. A rotating rod 20 is rotatably connected to one end of the fixed shaft 15 that passes through the partition 19. A sliding disc 21 that can be slidably adjusted is installed on the inner wall of the fixed sleeve 5. The cavity between the partition 19 and the sliding disc 21 is filled with hydraulic oil, and the cavity is connected to the space between the side wall of the grinding head 6 and the piston plate 17 through a pipe embedded in the fixed sleeve 5.

[0041] The above embodiments provide a specific implementation method for driving the sliding ring 16 to slide and adjust. See details below. Figure 5 When the external drive structure drives the sliding disk 21 to slide to the left, the cavity volume between the partition 19 and the sliding disk 21 decreases and the hydraulic oil is squeezed into the space between the side wall of the grinding head 6 and the piston plate 17, causing the piston plate 17 to slide to the right and drive the sliding ring 16 to slide to the right, thus completing the expansion of the grinding edge 7. When the sliding disk 21 slides to the right, the cavity volume between the partition 19 and the sliding disk 21 increases and the hydraulic oil is drawn out, causing the piston plate 17 to drive the sliding ring 16 to slide to the left under the action of the compression spring 18, thus completing the contraction of the grinding edge 7.

[0042] In this way, the external drive structure drives the sliding disk 21 to slide and drive the hydraulic oil to expand or contract the grinding blade 7. The stability of the hydraulic pressure ensures that the grinding blade 7 always maintains the preset grinding diameter when grinding the inner wall of the bushing, thereby improving the machining accuracy of the grinding blade 7 when grinding the inner wall of the bushing.

[0043] Furthermore, multiple sets of protrusions 26 are slidably installed on the outer wall of the rotating rod 20 via a flat key, and multiple sets of locking blocks 25 that can engage or disengage with the protrusions 26 are rotatably installed inside the sliding disk 21. Each set of locking blocks 25 is provided with a torsion spring at the rotatable connection between it and the sliding disk 21. An inclined groove is provided on the inner wall of the fixed sleeve 5, and a sliding pin that can slide in the inclined groove is provided on the outer wall of the sliding disk 21.

[0044] The above embodiments provide a specific implementation method for driving the sliding disk 21 to slide and adjust. See details below. Figure 5When the external drive structure drives the rotating rod 20 to rotate, the rotating rod 20 drives the locking block 25 and the sliding disk 21 to rotate together through the protrusion 26. When the sliding disk 21 rotates, the sliding pin on its outer wall slides along the inclined groove, which can drive the sliding disk 21 to move back and forth in the fixed sleeve 5. Since the cavity between the partition 19 and the sliding disk 21 is filled with hydraulic oil, the length of the sliding disk 21 needs to be greater than twice the length of the inclined groove on the inner wall of the sliding fixed sleeve 5 to ensure that the hydraulic oil will not leak through the inclined groove when the sliding disk 21 slides.

[0045] Thus, by providing torsion springs at the rotational connection between each set of locking blocks 25 and sliding disk 21, when it is necessary to process stepped through holes inside the bushing, since the grinding diameter of the grinding blade 7 is different from the grinding diameter of the grinding block 9, that is, when the grinding blade 7 expands to the preset value and the grinding block 9 still needs to continue to expand, the grinding blade 7 cannot expand due to the influence of the inner wall of the bushing. That is, when the external drive structure drives the rotating rod 20 and the protrusion 26 to rotate, the locking block 25 breaks through the torsion spring restriction and begins to rotate, disengaging from the engagement with the protrusion 26. That is, the rotating rod 20 and the protrusion 26 rotate freely, and the grinding diameter of the grinding block 9 can continue to be adjusted.

[0046] Furthermore, the connector includes a rotating shaft 4 installed inside the sliding seat 2 and capable of rotation. One end of the rotating shaft 4 that extends out of the sliding seat 2 is fixedly connected to a universal joint 22 between it and the rotating rod 20. The rotating rod 20 can slide along the outer wall of the fixed shaft 15. The outer walls of the rotating sleeve 3 and the fixed sleeve 5 that are close to each other are connected by ball joints to multiple sets of elastic telescopic rods 23. One end of the multiple sets of elastic telescopic rods 23 is connected to a limit ring 13 by a ball joint.

[0047] Furthermore, a fixing ring 8 is fixedly installed on the outer wall of the rotating sleeve 3, and a rotating disk 11 is slidably installed on the inner side wall of the fixing ring 8. An arc groove 12 is opened on the side wall of the rotating disk 11. Multiple sets of through holes are opened on the annular surface of the fixing ring 8. A sliding rod 10 is slidably installed in the through holes. A grinding block 9 is fixedly installed on one end of the sliding rod 10. A limiting pin that can slide in the arc groove 12 is provided on the other end of the sliding rod 10. A rotating block 24 is fixedly installed on the outer wall of the rotating shaft 4. A groove is opened on the outer wall of the rotating sleeve 3. The rotating block 24 is fixedly connected to the rotating disk 11 by a slider that is slidably installed in the groove.

[0048] A specific embodiment of the connector is provided based on the above embodiments, see details below. Figure 5When an external drive structure (such as a motor) drives the rotating shaft 4 to rotate the rotating block 24 and the rotating disk 11, the rotating disk 11 drives the sliding rod 10 to slide within the through hole via a limit pin, thus completing the adjustment of the grinding diameter of the grinding block 9. At this time, the rotating shaft 4 drives the rotating rod 20 to rotate together via the universal joint 22, and adjusts the grinding diameter of the grinding blade 7 via the rotating rod 20. Even though the adjustment of the grinding blade 7 and the grinding block 9 is carried out synchronously, since both the grinding blade 7 and the grinding block 9 are expanded by internal support, when performing stepped processing on the inner wall of the bushing, the axis of the grinding blade 7 can be aligned with the axis of the initial grinding section of the inner wall of the bushing to perform the first stage of processing on the inner wall of the bushing. Then adjust the grinding diameter of the grinding blade 7 and push it into the second stage, and place the grinding block 9 in the first stage. At this time, the grinding diameters of both are expanded synchronously so that both are in contact with the inner wall of the current stage. Since the center of the first stage has been confirmed, the concentricity of the second stage and the first stage can be detected by the universal joint 22. If the two stages are concentric, the limit ring 13 remains parallel to the universal joint 22. If there is a deviation between the centers of the two stages, the universal joint 22 rotates and drives the rotating rod 20 to slide along the outer wall of the fixed shaft 15, increasing the cavity volume between the partition 19 and the sliding disk 21, so that the grinding blade 7 retracts quickly and avoids the two stages being at different centers.

[0049] In this way, by separating the grinding section and the polishing section through the connector and allowing them to enter different processing stages, it is possible to confirm whether the centers of different stepped sections coincide by observing whether the universal joint 22 rotates. If the universal joint 22 does not deflect, it can be confirmed by comparing the grinding section and the polishing section to see if the centers of the multiple steps are all at the same center. If the universal joint 22 deflects, it indicates that the center of the stage where the grinding blade 7 is located deviates from the center of the stage where the polishing block 9 is located. At the same time, by sliding the rotating rod 20 along the outer wall of the fixed shaft 15, the cavity volume between the partition 19 and the sliding disk 21 is increased, allowing the grinding blade 7 to retract quickly, avoiding incorrect processing of the bushing, and combining hole expansion, polishing and measurement to further improve the processing quality.

[0050] Furthermore, the universal joint 22 is fitted with a bending spring.

[0051] As can be seen from the above embodiments, by installing a bending spring on the outer sleeve of the universal joint 22, when there is insufficient concentricity between the rotating sleeve 3 and the fixed sleeve 5, the device can be prevented from accidentally touching and causing processing to stop, thereby further improving the stability of the device during use.

[0052] Furthermore, the elastic telescopic rods 23 on the same side are designed to be inclined in the same direction.

[0053] As can be seen from the above embodiments, when the elastic telescopic rods 23 on the same side are set to be inclined in the same direction, if there is insufficient concentricity between the rotating sleeve 3 and the fixed sleeve 5, the offset direction of the corresponding elastic telescopic rods 23 is the same as the previous tilt direction, so that the elastic telescopic rods 23 that are compressed or stretched have a tendency to return to their original position. After adjusting the concentricity of the two ends inside the bushing, the rotation sleeve 3 and the fixed sleeve 5 can be easily returned to their original position through this tendency.

[0054] When the initial state of the elastic telescopic rod 23 is vertical, since multiple elastic telescopic rods 23 are perpendicular to the limiting ring 13, when there is insufficient concentricity between the rotating sleeve 3 and the fixed sleeve 5, the rotation of the elastic telescopic rod 23 must overcome the vertical state of the elastic telescopic rod 23 and the obstruction of the bending ring before it can rotate along the ball joint. This can increase the stability between the rotating sleeve 3 and the fixed sleeve 5, thereby avoiding the impact of vibration during the processing on the stability between the rotating sleeve 3 and the fixed sleeve 5, and thus achieving the purpose of improving the processing quality.

[0055] Furthermore, the grinding edge 7 has an inclination angle of ten to fifteen degrees between it and the horizontal line.

[0056] As can be seen from the above embodiments, by setting an inclination angle of ten to fifteen degrees between the grinding blade 7 and the horizontal line, the bushing can be ground by making the grinding blade 7 point-contact with the inner wall of the bushing. This allows the end of the grinding blade 7 to be machined into a horizontal shape on the inner wall of the bushing, or by machining the inner wall of the bushing into a bevel through the middle section of the grinding blade 7, so that the stepped boundary line of the inner wall of the bushing has an inclination angle of ten to fifteen degrees. This expands the applicability of the lifting device.

[0057] Furthermore, the sliding seat 2 is equipped with a gear set that can drive the rotating sleeve 3 and the rotating shaft 4 to rotate respectively.

[0058] As can be seen from the above embodiments, the rotating sleeve 3 and the rotating shaft 4 can be driven to rotate by an external drive structure such as a motor-driven gear set, thereby improving the stability of the device during operation.

[0059] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed directly based on existing technical knowledge without any doubt. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bushing reaming and grinding device, comprising a mounting base (1), characterized in that: The mounting base (1) has a chuck on its top surface for fixing the bushing. A sliding seat (2) is slidably mounted on the top surface of the mounting base (1). A rotating sleeve (3) that passes through the sliding seat (2) and can rotate is provided inside the sliding seat (2). A grinding head (6) is fixedly mounted on one end of the rotating sleeve (3). A grinding blade (7) is provided on the side wall of the grinding head (6). A grinding block (9) for grinding the inner wall of the bushing is provided on the outer wall of the rotating sleeve (3). The mounting base (1) also includes an adjustment component for adjusting the grinding diameter of the grinding blade (7) and the grinding block (9). The adjustment assembly includes multiple sets of inclined slots opened in the grinding head (6), each set of inclined slots has a sliding block (14) slidably installed in it, the grinding blade (7) is fixedly installed on the side wall of the sliding block (14), the grinding head (6) has a fixed shaft (15) fixedly installed in it, and the fixed shaft (15) is rotatably connected to a rotating rod (20) through one end of the partition plate (19); The adjustment assembly also includes a fixed sleeve (5) fixedly installed on the side wall of the grinding head (6). The fixed sleeve (5) is fixedly connected to the rotating sleeve (3) through a connector. The connector includes a rotating shaft (4) installed in the sliding seat (2) and capable of rotation. One end of the rotating shaft (4) that passes through the sliding seat (2) is fixedly connected to a universal joint (22) between it and the rotating rod (20). The rotating rod (20) can slide along the outer wall of the fixed shaft (15). The outer walls of the rotating sleeve (3) and the fixed sleeve (5) that are close to each other are connected to multiple sets of elastic telescopic rods (23) through ball joints. One end of the multiple sets of elastic telescopic rods (23) is connected to a limit ring (13) through a ball joint. By separating the grinding section and the polishing section through the connector and putting them into different processing stages, it is possible to confirm whether the centers of different steps coincide by observing whether the universal joint (22) rotates. If the universal joint (22) does not deflect, it is possible to confirm whether the centers of the multiple steps are all in the same center by comparing the grinding section and the polishing section. If the universal joint (22) deflects, it indicates that the center of the grinding blade (7) and the polishing block (9) are deviated. At the same time, by sliding the rotating rod (20) along the outer wall of the fixed shaft (15), the cavity volume between the partition (19) and the sliding disk (21) is increased, so that the grinding blade (7) retracts quickly, avoiding incorrect processing of the bushing, and combining hole expansion, polishing and measurement.

2. The bushing reaming and grinding device according to claim 1, characterized in that: The outer wall of the fixed shaft (15) is fitted with a sliding ring (16) that can slide, and the side wall of the sliding block (14) is provided with a slot, and the outer wall of the sliding ring (16) is provided with a pin that can slide in the slot.

3. The bushing reaming and grinding device according to claim 2, characterized in that: One end of the sliding ring (16) is inserted into the fixed sleeve (5) and a piston plate (17) is fixedly connected to it. The piston plate (17) is slidably installed on the inner wall of the fixed sleeve (5) and a compression spring (18) is provided between its side wall and the side wall of the grinding head (6). A partition plate (19) is fixedly installed on the inner wall of the fixed sleeve (5). A sliding disc (21) that can be slidably adjusted is installed on the inner wall of the fixed sleeve (5). The cavity between the partition plate (19) and the sliding disc (21) is filled with hydraulic oil. The cavity and the space between the side wall of the grinding head (6) and the piston plate (17) are connected through a pipe embedded in the fixed sleeve (5).

4. The bushing reaming and grinding device according to claim 3, characterized in that: The outer wall of the rotating rod (20) is slidably mounted with multiple sets of protrusions (26) via a flat key. The sliding disk (21) is rotatably mounted with multiple sets of locking blocks (25) that can engage or disengage with the protrusions (26). Each set of locking blocks (25) is provided with a torsion spring at the rotatable connection between it and the sliding disk (21). The inner wall of the fixed sleeve (5) is provided with an inclined groove. The outer wall of the sliding disk (21) is provided with a sliding pin that can slide in the inclined groove.

5. The bushing reaming and grinding device according to claim 4, characterized in that: A fixing ring (8) is fixedly installed on the outer wall of the rotating sleeve (3). A rotating disk (11) is slidably installed on the inner side wall of the fixing ring (8). An arc groove (12) is opened on the side wall of the rotating disk (11). Multiple sets of through holes are opened on the ring surface of the fixing ring (8). A sliding rod (10) is slidably installed in the through holes. A grinding block (9) is fixedly installed on one end of the sliding rod (10). A limiting pin that can slide in the arc groove (12) is provided on the other end of the sliding rod (10). A rotating block (24) is fixedly installed on the outer wall of the rotating shaft (4). A groove is opened on the outer wall of the rotating sleeve (3). The rotating block (24) is fixedly connected to the rotating disk (11) by a slider slidably installed in the groove.

6. The bushing reaming and grinding device according to claim 4, characterized in that: The universal joint (22) is fitted with a bending spring.

7. The bushing reaming and grinding device according to claim 6, characterized in that: The elastic telescopic rod (23) on the same side is set to be inclined in the same direction.

8. The bushing reaming and grinding device according to claim 7, characterized in that: The grinding blade (7) has an inclination angle of ten to fifteen degrees with respect to the horizontal line.

9. The bushing reaming and grinding device according to any one of claims 1-8, characterized in that: The sliding seat (2) is equipped with a gear set that can drive the rotating sleeve (3) and the rotating shaft (4) to rotate respectively.

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