Honing head structure and honing device

Abstract

The utility model discloses a honing head structure and a honing device. The honing head structure comprises a honing head body, a plurality of installation bases arranged in the circumferential direction of the honing head body, polishing components arranged on the installation bases, a movable rod coaxially arranged and arranged in the honing head body in a penetrating mode, and an expansion and contraction component arranged on the movable rod in a sliding and sleeving mode and capable of sliding in the axial direction of the honing head body. The mounting base can expand and contract in the radial direction of the grinding head body, and the outer wall of the expanding and contracting component is matched with the inner wall of the mounting base, so that the expanding and contracting component can be driven to slide on the moving rod in the first direction when the mounting base shrinks in the radial direction, and the mounting base is driven to expand in the radial direction when the expanding and contracting component moves in the second direction; a pre-tightening elastic piece is arranged in the grinding head body and used for applying elastic force in the second direction to the expansion and contraction component so that the installation base can contract in the radial direction to drive the expansion and contraction component to slide, and then the expansion and contraction component can be driven to elastically reset. The honing and grinding device has the beneficial effect that the honing and grinding uniformity can be improved.

Description

Technical Field

[0001] This utility model relates to a honing head structure and a honing device, belonging to the technical field of honing. Background Technology

[0002] Honing is achieved by using one or more honing stones mounted on the circumference of a honing head. An expanding mechanism (either rotary or pusher type) expands the honing stones radially, pressing them against the workpiece's hole wall to create surface contact. Simultaneously, the honing head rotates and reciprocates while the workpiece remains stationary, or the honing head only rotates while the workpiece reciprocates, thus achieving honing.

[0003] When using a honing head to grind the inner wall of a steel pipe, there may be protrusions or bends on the inner wall of the steel pipe. When these protrusions or bends come into contact with the honing stone, the contact pressure between the honing stone and the inner wall of the steel pipe increases instantaneously (according to the formula P=F / A, a decrease in the contact area A will significantly increase the local pressure P), causing the grinding amount to exceed the set value, forming local depressions, and resulting in uneven grinding. Utility Model Content

[0004] The purpose of this invention is to provide a honing head structure and a honing device that can improve the uniformity of honing grinding.

[0005] This utility model is achieved through the following technical solution.

[0006] A honing head structure includes a honing head body, multiple mounting seats arranged circumferentially along the honing head body, a grinding component mounted on the mounting seats, a movable rod coaxially arranged and passing through the honing head body, and an expansion and contraction component slidably sleeved on the movable rod and slidable along the axial direction of the honing head body. The mounting seats can expand and contract radially along the honing head body, and the outer wall of the expansion and contraction component cooperates with the inner wall of the mounting seat, so that when the mounting seat contracts radially, it can drive the expansion and contraction component to slide along the movable rod in a first direction, and when the expansion and contraction component moves in a second direction, it drives the mounting seat to expand radially. The honing head body is provided with a pre-tightening elastic element for applying an elastic force in the second direction to the expansion and contraction component so that after the mounting seat contracts radially and drives the expansion and contraction component to slide, the expansion and contraction component is driven to elastically reset.

[0007] As a further improvement of this utility model, the pre-tightening elastic element is set as a compression spring, the compression spring is sleeved on the moving rod, the moving rod is provided with an elastic adjustment element, one end of the compression spring is connected to the expansion and contraction component, and the other end is connected to the elastic adjustment element.

[0008] As a further improvement of this utility model, the moving rod can move repeatedly along the axial direction of the grinding head body. The moving rod is provided with a limiting member for abutting against the end of the expansion and contraction component away from the pre-tightening elastic member. The limiting member and the pre-tightening elastic member together define the position of the expansion and contraction component on the moving rod.

[0009] As a further improvement of this utility model, the elastic adjusting member is movably disposed along the axial direction of the moving rod to adjust the elastic force applied by the pre-tightening elastic member to the expansion and contraction component.

[0010] As a further improvement of this utility model, the elastic adjusting member is threadedly connected to the moving rod.

[0011] As a further improvement of this utility model, the grinding head body is provided with a plurality of mounting grooves corresponding one-to-one with the mounting seat, and the mounting grooves are connected to the interior of the grinding head body; the grinding head body is provided with at least one fastening elastic element, which is used to drive the mounting seat to reset after the mounting seat moves out radially along the grinding head body.

[0012] As a further improvement of this utility model, the outer wall of the mounting base is provided with a fastening groove for fixing the fastening elastic element.

[0013] As a further improvement of this utility model, it also includes a fixing component for connecting the grinding head body and the honing device drive system, and an adjusting component disposed on the fixing component for driving the moving rod to move axially along the grinding head body. The fixing component includes at least a fixing rod connected to the grinding head body, and the adjusting component includes at least a moving member connected to the moving rod. The moving member can move axially along the grinding head body.

[0014] As a further improvement of this utility model, one end of the fixed rod is connected to the grinding head body and has a moving channel formed inside for the moving rod to move; the other end of the fixed rod is provided with a connecting seat, and the adjusting component includes a hand-adjusting component rotatably mounted on the connecting seat and the grinding head body. The rotation of the hand-adjusting component drives the moving part to move along the axial direction of the grinding head body. The moving part is connected to the moving rod through a connecting part. The moving rod passes through the fixed rod and is connected to the moving rod. An opening extending along the moving direction of the moving rod is provided on the fixed rod.

[0015] A honing device includes a honing head structure as described above.

[0016] The beneficial effects of this utility model are:

[0017] By cooperating with the mounting base and the expansion and contraction component, the radial contraction motion of the mounting base can be converted into the axial sliding motion of the expansion and contraction component. Therefore, during honing, when the grinding component on the mounting base contacts the protrusions or bends inside the steel pipe, under pressure, it can drive the mounting base to contract radially and drive the expansion and contraction component to slide axially, reducing the contact pressure between the grinding component and the protrusions or bends of the steel pipe and improving the grinding uniformity. Attached Figure Description

[0018] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of this utility model, wherein:

[0019] Figure 1 This is a schematic diagram of the internal structure of a honing head according to the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of a honing head according to the present invention;

[0021] Figure 3 This is a structural diagram of the fixed component;

[0022] Figure 4 This is a schematic diagram of the structure in which the moving rod cooperates with the expansion and contraction components, the pre-tightening elastic component, the elastic adjustment component, and the limiting component. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0025] Example 1:

[0026] A honing head structure for honing the inner surface of a steel pipe, as shown in the reference. Figures 1-4The device includes a grinding head body 1, multiple mounting seats 2 arranged circumferentially along the grinding head body 1, grinding components m arranged on the mounting seats 2, a moving rod 3 arranged coaxially and passing through the grinding head body 1, and an expansion and contraction component 4 slidably sleeved on the moving rod 3 and slidable along the axial direction of the grinding head body 1; the mounting seats 2 can expand and contract radially along the grinding head body 1, and the outer wall of the expansion and contraction component 4 cooperates with the inner wall of the mounting seat 2, so that when the mounting seat 2 contracts radially, it can drive the expansion and contraction component 4 to slide along the moving rod 3 in a first direction, and when the expansion and contraction component moves in a second direction, it drives the mounting seat to expand radially.

[0027] The grinding head body 1 is provided with a pre-tightening elastic element 5, which is used to apply an elastic force along the second direction to the expansion and contraction component 4 so that the outer wall of the expansion and contraction component 4 is in close contact with the inner wall of the mounting base 2, and to drive the expansion and contraction component 4 to elastically reset after the mounting base 2 radially contracts and drives the expansion and contraction component 4 to slide.

[0028] In this embodiment, through the cooperation of the mounting base 2 and the expansion and contraction component 4, the radial movement of the mounting base 2 can be converted into the axial sliding of the expansion and contraction component 4. Therefore, during honing, when the grinding component m on the mounting base 2 contacts the protrusion or bend inside the steel pipe, it can drive the mounting base 2 to move inward and drive the expansion and contraction component 4 to slide axially, reducing the contact pressure between the grinding component m and the protrusion or bend of the steel pipe, improving the grinding uniformity and improving the overall performance.

[0029] Meanwhile, the pre-tightening elastic element 5 enables the expansion and contraction component 4 and the mounting base 2 to maintain stable contact during grinding, reducing poor contact between the grinding component m and the workpiece surface caused by vibration, and improving machining accuracy and stability.

[0030] It should be noted that the expansion and contraction component 4 has a conical surface 41 in its axial direction, and the inner wall of the mounting base 2 has an inclined surface 21 corresponding to the conical surface 41. Therefore, when the expansion and contraction component 4 is fixed in position on the moving rod 3, the movement of the conical surface 41 of the expansion and contraction component 4 in the second direction can cause the mounting base 2 to expand radially. Furthermore, when the expansion and contraction component 4 can slide along the axial direction of the moving rod 3, the radial movement of the mounting base 2 can be converted into the axial sliding of the expansion and contraction component 4. Additionally, refer to... Figure 1 and Figure 2 The first direction and the second direction refer to the left and right directions of the grinding head body 1, respectively.

[0031] In this embodiment, the pre-tightening elastic element 5 is set as a compression spring. Specifically, when the compression spring contacts the expansion and contraction component 4, it will maintain appropriate compression. The compression spring is sleeved on the moving rod 3, and the moving rod 3 is provided with an elastic adjustment element 6. One end of the compression spring is connected to the expansion and contraction component 4, and the other end is connected to the elastic adjustment element 6.

[0032] In this embodiment, the moving rod 3 can move repeatedly along the axial direction of the grinding head body 1. That is, the movement of the moving rod 3 drives the expansion and contraction component 4 to move, thereby causing the mounting seat 2 to expand radially along the grinding head body 1. At this time, it is necessary to ensure that the position of the expansion and contraction component 4 on the moving rod 3 is stable. However, since the expansion and contraction component 4 is slidably mounted on the moving rod 3, it will move under the action of the axial force along the grinding head body 1. Therefore, in order to ensure that the movement of the moving rod 3 can stably drive the mounting seat 2 to expand radially, the moving rod 3 is provided with a limiting component 31 for abutting against the end of the expansion and contraction component 4 away from the pre-tightening elastic member 5. The limiting component 31 and the pre-tightening elastic member 5 limit the position of the expansion and contraction component 4 on the moving rod 3. That is, the elastic force of the compression spring is used to make the expansion and contraction component 4 tightly abut against the limiting component 31, thereby fixing the position of the expansion and contraction component 4.

[0033] In this embodiment, the elastic adjusting member 6 is movably disposed along the axial direction of the moving rod 3 to adjust the elastic force applied by the pre-tightening elastic member 5 to the expansion and contraction component 4. This allows for adjustment of the elastic force applied by the pre-tightening elastic member 5 to the expansion and contraction component 4 according to actual working conditions, providing high flexibility. The elastic adjusting member 6 and the moving rod 3 can be connected by a thread to change the position of the elastic adjusting member 6 on the moving rod 3. Specifically, the elastic adjusting member 6 has a through hole allowing the moving rod 3 to pass through. The moving rod 3 has an external thread, and the through hole has an internal thread that mates with the external thread. Therefore, rotating the elastic adjusting member 6 changes its position on the moving rod 3, thereby changing the elastic force applied by the compression spring to the expansion and contraction component 4. It should be noted that, referring to… Figure 1 The internal space of the grinding head body 1 is connected to the outside, so the elastic adjustment element 6 can be adjusted by a tool.

[0034] In addition, refer to Figure 1 When the elastic adjusting element 6 is threadedly connected to the moving rod 3, the pre-tightening elastic element 5 can be replaced by rotating the elastic adjusting element 6. Therefore, when honing different types of steel pipes, the elastic force applied by the pre-tightening elastic element 5 to the expansion and contraction components can be adjusted by replacing the pre-tightening elastic element 5 with one of different materials, which helps to improve the flexibility of use.

[0035] In this embodiment, the grinding head body 1 has a plurality of mounting grooves 11 corresponding one-to-one with the mounting seats 2. The mounting grooves 11 communicate with the interior of the grinding head body 1, and the mounting seats 2 are disposed on the mounting grooves 11. Therefore, the mounting seats 2 can move along the radial direction of the grinding head body 1. At the same time, in order to prevent the mounting seats 2 from dislodging from the mounting grooves 11, the grinding head body 1 is provided with at least one fastening elastic element 9, which is used to drive the mounting seats 2 to reset after they move radially out of the grinding head body 1. It should be noted that, referring to Figure 1 or Figure 2 The fastening elastic element 9 here is usually set to two, and the two fastening elastic elements 9 act on the two ends of the mounting base 2 respectively.

[0036] Specifically, the fastening elastic element 9 is a ring spring, which is sleeved on the outer surface of the grinding head body 1 and the outer surface of the mounting base 2. In addition, fastening grooves 22 for fixing the fastening elastic element 9 are provided on the outer wall of the mounting base 2 and the outer wall of the grinding head body 1. Multiple fastening grooves 22 extend in the same direction, and the size of the fastening grooves 22 is adapted to the ring spring, thereby preventing the ring spring from detaching from the grinding head body 1 during contraction or extension.

[0037] In this embodiment, it also includes a fixing component 7 for connecting the grinding head body 1 to the drive system in the honing device and an adjusting component 8 disposed on the fixing component 7 for driving the moving rod 3 to move axially along the grinding head body 1. The drive system is used to drive the grinding head body 1 to rotate. The fixing component 7 includes at least a fixing rod 72 connected to the grinding head body 1. The adjusting component 8 includes at least a moving member 82 connected to the moving rod 3. The moving member 82 can move axially along the grinding head body 1. Specifically, one end of the fixed rod 72 is connected to the grinding head body 1 and has a moving channel 721 inside for the moving rod 3 to move. The other end of the fixed rod 72 is provided with a connecting seat 71. The adjusting assembly 8 includes a manual adjustment component 81 rotatably mounted on the connecting seat 71 and the grinding head body 1. The rotation of the manual adjustment component 81 drives the moving component 82 to move axially along the grinding head body 1. The moving component 82 is sleeved on the outside of the fixed rod 72, and the manual adjustment component 81 is sleeved on the outside of the moving component 82. The manual adjustment component 81 and the moving component 82 are threaded together, and the position of the manual adjustment component 81 is defined by the grinding head body 1 and the connecting seat 71 and can rotate relative to both. The moving component 82 is connected to the moving rod 3 through the connecting component 83. The moving rod 3 is provided with a through hole, and the connecting component 83 passes through the through hole to fix the moving rod 3. The moving rod 3 passes through the fixed rod 72 and is connected to the moving rod 3. The fixed rod 72 is provided with an opening 722 extending in the moving direction. When adjusting the moving rod 3, the moving part 82 is driven to move linearly by manually rotating the manual adjustment part 81, and then the moving rod 3 is driven to move by the connecting part 83, which is convenient to operate.

[0038] Example 2:

[0039] A honing apparatus, comprising a honing head structure as described in Example 1.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A honing head structure, characterized in that, The device includes a grinding head body (1), multiple mounting seats (2) arranged circumferentially along the grinding head body (1), grinding components (m) mounted on the mounting seats (2), a moving rod (3) coaxially arranged and passing through the grinding head body (1), and an expansion and contraction component (4) slidably sleeved on the moving rod (3) and slidable along the axial direction of the grinding head body (1); the mounting seats (2) can expand and contract radially along the grinding head body (1), and the outer wall of the expansion and contraction component (4) cooperates with the inner wall of the mounting seat (2), so that... When the mounting base (2) contracts radially, it can drive the expansion and contraction component (4) to slide along the moving rod (3) in the first direction, and when the expansion and contraction component (4) moves along the second direction, it drives the mounting base (2) to expand radially; the grinding head body (1) is provided with a pre-tightening elastic element (5) for applying an elastic force along the second direction to the expansion and contraction component (4) so ​​that after the mounting base (2) contracts radially and drives the expansion and contraction component (4) to slide, the expansion and contraction component (4) is driven to elastically reset.

2. The honing head structure according to claim 1, characterized in that, The pre-tightening elastic element (5) is a compression spring. The compression spring is sleeved on the moving rod (3). The moving rod (3) is provided with an elastic adjustment element (6). One end of the compression spring is connected to the expansion and contraction component (4), and the other end is connected to the elastic adjustment element (6).

3. The honing head structure according to claim 2, characterized in that, The moving rod (3) can move repeatedly along the axial direction of the grinding head body (1). The moving rod (3) is provided with a limiting member (31) for abutting against the end of the expansion and contraction component (4) away from the pre-tightening elastic member (5). The limiting member (31) and the pre-tightening elastic member (5) together define the position of the expansion and contraction component (4) on the moving rod (3).

4. The honing head structure according to claim 3, characterized in that, The elastic adjustment member (6) is movably disposed along the axial direction of the moving rod (3) to adjust the elastic force applied by the pre-tightening elastic member (5) to the expansion and contraction member (4).

5. A honing head structure according to claim 4, characterized in that, The elastic adjustment element (6) is threadedly connected to the moving rod (3).

6. The honing head structure according to claim 1, characterized in that, The grinding head body (1) has a plurality of mounting grooves (11) that correspond one-to-one with the mounting seat (2), and the mounting grooves (11) are connected to the interior of the grinding head body (1); the grinding head body (1) is provided with at least one fastening elastic element (9) for driving the mounting seat (2) to reset after the mounting seat (2) expands radially along the grinding head body (1).

7. A honing head structure according to claim 6, characterized in that, The outer wall of the mounting base (2) is provided with a fastening groove (22) for fixing the fastening elastic element (9).

8. The honing head structure according to claim 3, characterized in that, It also includes a fixed assembly (7) for connecting the grinding head body (1) and the drive system of the honing device, and an adjusting assembly (8) disposed on the fixed assembly (7) for driving the moving rod (3) to move axially along the grinding head body (1). The fixed assembly (7) includes at least a fixed rod (72) connected to the grinding head body (1), and the adjusting assembly (8) includes at least a moving part (82) connected to the moving rod (3). The moving part (82) is axially movable along the grinding head body (1).

9. A honing head structure according to claim 8, characterized in that, One end of the fixed rod (72) is connected to the grinding head body (1) and has a moving channel (721) inside for the moving rod (3) to move; the other end of the fixed rod (72) is provided with a connecting seat (71), and the adjusting component (8) includes a hand-adjusting component (81) rotatably mounted on the connecting seat (71) and the grinding head body (1). The rotation of the hand-adjusting component (81) drives the moving component (82) to move axially along the grinding head body (1). The moving component (82) is connected to the moving rod (3) through the connecting component (83). The moving rod (3) passes through the fixed rod (72) and is connected to the moving rod (3). The fixed rod (72) has an opening (722) extending along the moving direction of the moving rod (3).

10. A honing apparatus, characterized in that, The honing head structure includes any one of claims 1 to 9.

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