Swing rod type diameter-adjustable self-centering sheet metal part inner hole polishing tool

Abstract

The utility model discloses a swing rod type diameter-adjustable self-centering sheet metal part inner hole polishing tool which comprises a center rod, a polygonal column, a limiting adjusting nut arranged on the center rod in a sleeved mode through threads, a first center disc and a second center disc, the sliding ring is rotationally arranged between the first center disc and the second center disc in a sleeving mode, the swing rods are arranged on the first center disc, the second center disc and the sliding ring in a swinging mode, the grinding blocks are arranged at the outer ends of the swing rods in a one-to-one correspondence mode, one end of each connecting rod is in pin joint with the sliding ring, and the other end of each connecting rod is in pin joint with the corresponding swing rod. The limiting and adjusting ring is arranged between the first central disc and the limiting and adjusting nut and is used for limiting the rotation angle of the slip ring; a plurality of limiting blocks are arranged on the peripheral edge of the limiting adjusting ring; the first center disc and the second center disc are each provided with a plurality of second pin rod sliding rings. The connecting rod is provided with a second pin rod; and the second pin rod penetrates through the second pin rod sliding ring and is in extrusion contact with the limiting block on the limiting adjusting ring.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a swing-rod type diameter-adjustable self-centering sheet metal part inner hole grinding tool. Background Art

[0002] The grinding tools of this technology are mainly used for high-precision grinding of deep hole walls and inner holes of sheet metal parts. As we all know, the hole walls of deep hole parts often have vibration marks due to abnormal vibration of the turning tool bar during processing, which affects the surface quality of the deep hole wall. Therefore, it is often necessary to add a boring process to improve the surface quality of the hole wall. At present, some cylindrical parts require drilling on the wall part, and the burrs left by drilling are difficult to remove on the inner side of the wall. A special grinding tool for the inner diameter of the wall is needed to remove the burrs.

[0003] In addition, sheet metal parts processing procedures usually include unfolding parts cutting, unfolding parts grinding, parts plastic forming and trimming, etc. Among them, the unfolding parts cutting process usually uses laser cutting or CNC milling methods. Usually, the processing of unfolded parts requires leaving process connection materials to prevent the parts from being displaced or bounced by gas blowing or tool friction, resulting in shape deviation and wear. The existing process often uses radial grinding tools with fixed diameters or manual filing, which easily leads to poor inner circle roundness and low processing efficiency.

[0004] Therefore, there is an urgent need to propose a rocker-type diameter-adjustable self-centering sheet metal part inner hole grinding tool with simple structure, reliable adjustment and strong flexibility. Utility Model Content

[0005] In view of the above problems, the purpose of the utility model is to provide a swing-rod type diameter-adjustable self-centering sheet metal parts inner hole grinding tool. The technical solution adopted by the utility model is as follows:

[0006] A self-centering sheet metal part inner hole grinding tool with adjustable diameter of a rocker type, comprising an integrally formed center rod and a polygonal column, a limit adjustment nut threadedly sleeved on the center rod, a first center disk and a second center disk sequentially sleeved on the polygonal column, a sliding ring sleeved between the first center disk and the second center disk, a plurality of rockers swung on the first center disk, the second center disk and the sliding ring, a grinding block correspondingly arranged on the outer end of the rocker, a connecting rod with one end pinned to the sliding ring and the other end pinned to the rocker and in an arc shape, and a limit adjustment ring arranged between the first center disk and the limit adjustment nut and limiting the rotation angle of the sliding ring; a plurality of limiting blocks are arranged on the edges around the limit adjustment ring;

[0007] The first center disk and the second center disk are both provided with a plurality of second pin sliding rings; the connecting rod is provided with a second pin; the second pin passes through the second pin sliding ring and is in extrusion contact with the limiting block on the limit adjustment ring; the number of the rocker arm, the grinding block, the connecting rod, the second pin sliding ring, the limiting block and the second pin is the same.

[0008] Furthermore, a polygonal column connecting sleeve is arranged on the inner side of the first center disk; a polygonal hole is provided in the polygonal column connecting sleeve; the polygonal column is placed in the polygonal hole; and the slip ring rotating sleeve is arranged on the polygonal column connecting sleeve.

[0009] Furthermore, a plurality of pin-connecting ears are arranged on the edges around the first center disk and the second center disk; a first pin connecting hole is formed in the pin-connecting ears; and a first pin is arranged between the inner end of the rocker rod and the first pin connecting hole.

[0010] Furthermore, a slot is provided on the inner side of the rocker arm; a fourth pin connecting hole and a third pin connecting hole are provided on the rocker arm; the fourth pin connecting hole and the third pin connecting hole are placed at the position of the slot; the connecting rod is sleeved in the slot; the second pin is arranged in the fourth pin connecting hole; and the first pin is arranged in the third pin connecting hole.

[0011] Furthermore, a plurality of second pin connecting holes are provided on the slip ring; and a third pin is provided between the second pin connecting hole and the connecting rod.

[0012] Furthermore, a retaining spring groove ring is provided at the end of the polygonal column; a retaining spring is arranged in the retaining spring groove ring; and the retaining spring is pressed against the outer side of the second center disk.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) The utility model is provided with a first center disk, a slip ring, a swing rod, a grinding block, a connecting rod and a second center disk, wherein the slip ring is rotatably sleeved between the first center disk and the second center disk. The center rod is connected to an electric or pneumatic device and drives the center rod and the polygonal column to rotate. The central axis of the rotating grinding tool rotates to generate centrifugal force, causing the slip ring to rotate, the connecting rod and the swing rod to unfold, so that the grinding block is close to the inner wall of the hole to be ground, and the grinding operation is performed.

[0015] (2) The utility model provides a second pin, a second pin sliding ring, a second pin connecting hole, a limit adjustment ring and a limiting block. Under the extrusion of the limit adjustment nut, the limit adjustment ring is pressed and fixed on the first center disk to adjust the degree of expansion of the connecting rod and the swing rod, that is, the maximum expansion degree is when the second pin is pressed on the limiting block. The utility model limits the opening angle of each swing rod through the sliding ring.

[0016] In summary, the utility model has the advantages of simple structure, reliable action, etc., and has high practical value and promotion value in the field of mechanical manufacturing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope of protection. For those skilled in the art, other relevant drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a blasting schematic diagram of the utility model.

[0019] Figure 2 This is a first angle schematic diagram of the recycling state in the utility model.

[0020] Figure 3 This is a second angle schematic diagram of the recycling state in the utility model.

[0021] Figure 4 It is a bottom view of the recovery state in the utility model.

[0022] Figure 5 It is a schematic diagram from a first angle of the unfolded state of the utility model.

[0023] Figure 6 It is a second angle schematic diagram of the unfolded state of the utility model (excluding the second center disk).

[0024] Figure 7 It is a third angle schematic diagram of the unfolded state of the utility model (without the limit adjustment nut).

[0025] Figure 8 It is a bottom view of the utility model in the unfolded state.

[0026] In the above drawings, the component names corresponding to the reference numerals are as follows:

[0027] 1. Center rod; 2. Polygonal column; 3. Limit adjustment nut; 4. Limit adjustment ring; 5. First center disk; 6. Slip ring; 7. Rocker rod; 8. Grinding block; 9. Connecting rod; 10. Second center disk; 11. First pin rod; 12. Second pin rod; 13. Third pin rod; 21. Retaining ring groove; 51. Polygonal column connecting sleeve; 52. First pin rod connecting hole; 53. Second pin rod sliding ring; 54. Polygonal hole; 61. Second pin rod connecting hole; 71. Notch portion; 72. Fourth pin rod connecting hole; 73. Third pin rod connecting hole. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of this application clearer, the utility model is further described below in conjunction with the accompanying drawings and embodiments, and the implementation methods of this utility model include but are not limited to the following embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0029] In this embodiment, the term "and / or" is merely a term used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0030] The terms "first" and "second" in the description and claims of this embodiment are used to distinguish different objects rather than to describe a specific order of objects. For example, a first target object and a second target object are used to distinguish different target objects rather than to describe a specific order of target objects.

[0031] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0032] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more than two. For example, multiple processing units refer to two or more processing units; multiple systems refer to two or more systems.

[0033] like Figures 1 to 8 As shown, this embodiment provides a rocker-type diameter-adjustable self-centering sheet metal part inner hole grinding tool, which grinds the wall of deep holes and the inner holes of sheet metal part blanks. Specifically, the grinding tool includes a center rod 1, a polygonal column 2, a limit adjustment nut 3, a limit adjustment ring 4, a first center disk 5, a slip ring 6, a rocker 7, a grinding block 8, a connecting rod 9 and a second center disk 10. Among them, this embodiment adjusts the limit adjustment ring 4 and uses the limit adjustment nut 3 for extrusion and fixation to achieve the adjustment of the unfolding angle and the diameter adjustment of the grinding tool.

[0034] Among them, a retaining ring groove 21 is opened at the end of the polygonal column 2, and a retaining ring is arranged in the retaining ring groove 21. Finally, the retaining ring is squeezed on the outside of the second center disk 10 to realize the installation of the first center disk 5 and the second center disk 10.

[0035] In addition, a plurality of second pin rod sliding rings 53 are provided on the first center disk 5 and the second center disk 10, and a plurality of pin rod connecting ears are provided on the edges around the first center disk 5 and the second center disk 10, and a first pin rod connecting hole 52 is provided in the pin rod connecting ear. In addition, a polygonal column connecting sleeve 51 is provided on the inner side of the first center disk 5, and a polygonal hole 54 is provided in the polygonal column connecting sleeve 51, and the polygonal column 2 is placed in the polygonal hole 54. In addition, the sliding ring 6 is rotatably sleeved on the polygonal column connecting sleeve 51. In this embodiment, three second pin rod connecting holes 61 are provided on the sliding ring 6, and a third pin rod 13 is provided between the second pin rod connecting hole 61 and the connecting rod 9.

[0036] In this embodiment, a notch portion 71 is provided on the inner side of the swing rod 7, and a fourth pin connecting hole 72 and a third pin connecting hole 73 are provided on the swing rod 7. The fourth pin connecting hole 72 and the third pin connecting hole 73 are placed at the position of the notch portion 71. In this embodiment, the connecting rod 9 is sleeved in the notch portion 71, and the second pin 12 is arranged in the fourth pin connecting hole 72, and the first pin 11 is arranged in the third pin connecting hole 73. Three limiting blocks are provided on the edges around the limit adjustment ring 4, and the second pin 12 penetrates the second pin sliding ring 53 and is in compression contact with the limiting blocks on the limit adjustment ring 4. In this embodiment, by adjusting the position of the limit adjustment ring 4, the limiting blocks cover the second pin sliding ring 53. When the limiting blocks are closer to the second pin connecting hole 61, the sliding distance of the second pin 12 along the second pin sliding ring 53 becomes shorter, the angle of the swing rod 7 is smaller, and the limit angle of the grinding tool is smaller. On the contrary, the larger the limit angle of the expansion.

[0037] In this embodiment, the center rod 1 and the polygonal column 2 are integrally formed, and the limit adjustment nut 3 is connected to the center rod 1 by threaded sleeve. In this embodiment, the first center disk 5 and the second center disk 10 are sequentially sleeved on the polygonal column 2, and the limit adjustment ring 4 is arranged between the first center disk 5 and the limit adjustment nut 3. In this embodiment, the slip ring 6 is rotatably sleeved between the first center disk 5 and the second center disk 10, specifically sleeved on the polygonal column connecting sleeve 51. In addition, the inner ends of the three rocker rods 7 are swingably connected to the first center disk 5 and the second center disk 10 by the first pin rod 11. In this embodiment, the grinding block 8 is arranged on the outer end of the rocker rod 7. In addition, one end of the connecting rod 9 is pin-connected to the slip ring 6, and the other end is pin-connected to the rocker rod 7, that is, the second pin rod connecting hole 61 corresponds to the corresponding position of the third pin rod, and the fourth pin rod connecting hole 72 corresponds to the corresponding position of the second pin rod sliding ring 53.

[0038] The above embodiments are only preferred embodiments of the present utility model and are not intended to limit the protection scope of the present utility model. Any changes that adopt the design principles of the present utility model and are made through non-creative labor on this basis should fall within the protection scope of the present utility model.

Claims

1. A pendulum-type diameter-adjustable self-centering sheet metal part inner hole grinding tool, characterized in that: The invention comprises an integrally formed center rod (1) and a polygonal column (2), a limit adjustment nut (3) threadedly sleeved on the center rod (1), a first center disk (5) and a second center disk (10) sleeved on the polygonal column (2) in sequence, a slip ring (6) sleeved between the first center disk (5) and the second center disk (10) rotatingly, a plurality of swing rods (7) arranged on the first center disk (5), the second center disk (10) and the slip ring (6) swingingly, a grinding block (8) arranged one by one at the outer end of the swing rod (7), an arc-shaped connecting rod (9) with one end pin-connected to the slip ring (6) and the other end pin-connected to the swing rod (7), and a limit adjustment ring (4) arranged between the first center disk (5) and the limit adjustment nut (3) and limiting the rotation angle of the slip ring (6); the limit adjustment ring (4) is provided with a plurality of limiting blocks on the edges around it; The first center disk (5) and the second center disk (10) are both provided with a plurality of second pin rod sliding rings (53); the connecting rod (9) is provided with a second pin rod (12); the second pin rod (12) passes through the second pin rod sliding ring (53) and is in compression contact with a limiting block on the limit adjustment ring (4); the rocker rod (7), the grinding block (8), the connecting rod (9), the second pin rod sliding ring (53), the limiting block and the second pin rod (12) are provided in the same number.

2. A rocker-type diameter-adjustable self-centering sheet metal part inner hole grinding tool according to claim 1, characterized in that: A polygonal column connecting sleeve (51) is arranged on the inner side of the first center disk (5); a polygonal hole (54) is provided in the polygonal column connecting sleeve (51); the polygonal column (2) is placed in the polygonal hole (54); and the slip ring (6) is rotatably sleeved on the polygonal column connecting sleeve (51).

3. The swing-rod type diameter-adjustable self-centering sheet metal part inner hole grinding tool according to claim 1, characterized in that: A plurality of pin-connecting ears are arranged on the edges of the first center disk (5) and the second center disk (10); a first pin connecting hole (52) is formed in the pin-connecting ears; and a first pin (11) is arranged between the inner end of the swing rod (7) and the first pin connecting hole (52).

4. The swing-rod type diameter-adjustable self-centering sheet metal part inner hole grinding tool according to claim 3, characterized in that: A notch portion (71) is provided on the inner side of the swing rod (7); a fourth pin connecting hole (72) and a third pin connecting hole (73) are provided on the swing rod (7); the fourth pin connecting hole (72) and the third pin connecting hole (73) are arranged at the position of the notch portion (71); the connecting rod (9) is sleeved in the notch portion (71); the second pin (12) is arranged in the fourth pin connecting hole (72); and the first pin (11) is arranged in the third pin connecting hole (73).

5. A rocker-type diameter-adjustable self-centering sheet metal part inner hole grinding tool according to claim 1, 2, 3 or 4, characterized in that: The slip ring (6) is provided with a plurality of second pin connecting holes (61); a third pin (13) is provided between the second pin connecting hole (61) and the connecting rod (9).

6. A rocker-type diameter-adjustable self-centering sheet metal part inner hole grinding tool according to claim 1, 2, 3 or 4, characterized in that: A retaining spring groove ring (21) is provided at the end of the polygonal column (2); a retaining spring is arranged in the retaining spring groove ring (21); and the retaining spring is pressed against the outer side of the second center disk (10).

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