Sliding groove type self-centering sheet metal part inner hole grinding tool

Abstract

The utility model discloses a sliding groove type self-centering sheet metal part inner hole polishing tool which comprises a center rod, a front end rod, a first thread part, a second thread part and a plurality of strip-shaped grooves, wherein the center rod and the front end rod are integrally formed, the first thread part and the second thread part are arranged at the ends of the front end rod respectively, and the strip-shaped grooves are formed in the front end rod in the radial direction of the center rod. The cutting plates are sleeved with the strip-shaped grooves in a one-to-one correspondence mode, the first limiting ring is connected with the first threaded part through threads, and the second limiting ring is connected with the second threaded part through threads; the cutting plate is extruded and limited in the strip-shaped groove by the first limiting ring and the second limiting ring; the strip-shaped grooves are annularly formed in the peripheral edge of the front end rod at equal intervals. The first threaded parts and the second threaded parts are arranged at the ends of the strip-shaped grooves in a one-to-one correspondence mode. By means of the scheme, the device has the advantages of being simple in structure, reliable in adjustment and the like, and has high practical value and popularization value in the technical field of machine manufacturing.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a slide-type 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, it is urgent to propose a slide-type self-centering sheet metal parts inner hole grinding tool with simple structure and reliable adjustment. Utility Model Content

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

[0006] A slide groove type self-centering sheet metal part inner hole grinding tool, comprising an integrally formed center rod and front end rod, a first threaded portion and a second threaded portion respectively provided at the end of the front end rod, a plurality of strip grooves provided on the front end rod along the radial direction of the center rod, a cutting plate sleeved in the strip grooves in one-to-one correspondence, a first limiting ring connected to the first threaded portion by a thread, and a second limiting ring connected to the second threaded portion by a thread; the first limiting ring and the second limiting ring squeeze and limit the cutting plate in the strip groove;

[0007] A plurality of the strip grooves are equidistantly arranged around the edges of the front end rod; the first threaded portion and the second threaded portion are arranged at the ends of the strip grooves in a one-to-one correspondence.

[0008] Furthermore, the cutting plate comprises an integrally formed connecting portion and a grinding portion; the connecting portion is trapezoidal in shape; the first limiting ring and the second limiting ring are in extrusion contact with the trapezoidal bevel of the connecting portion.

[0009] Furthermore, three strip grooves and three cutting plates are provided.

[0010] Furthermore, a first locking nut is sleeved on the first threaded portion; a second locking nut is sleeved on the second threaded portion; the first locking nut is squeezed on the rear end of the first limiting ring; and the second locking nut is squeezed on the front end of the second limiting ring.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model provides a strip groove on the front end rod, and uses the first limiting ring and the second limiting ring to limit the lower part of the cutting plate in the strip groove, so as to achieve reliable connection. In addition, the present embodiment adjusts the positions of the first limiting ring and the second limiting ring according to the aperture of the deep hole and the inner hole of the sheet metal part blank to achieve the adjustment of the position of the cutting plate, and the adjustment is simple and reliable. In summary, the utility model has the advantages of simple structure and reliable adjustment, and has high practical value and promotion value in the field of mechanical manufacturing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] 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.

[0014] Figure 1 It is a blasting schematic diagram of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the utility model.

[0016] Figure 3 It is a schematic diagram of the structure after removing the first limiting ring and the second limiting ring in the utility model.

[0017] Figure 4 It is a schematic diagram of the structure in which the cutting plate is removed in the utility model.

[0018] Figure 5 It is a structural schematic diagram of the cutting plate in the utility model.

[0019] Figure 6 It is a first cross-sectional schematic diagram of the utility model.

[0020] Figure 7 It is a second cross-sectional schematic diagram of the present utility model.

[0021] In the above drawings, the component names corresponding to the reference numerals are as follows:

[0022] 1. Center rod; 2. Front end rod; 3. First threaded portion; 4. Second threaded portion; 5. Cutting plate; 6. First limiting ring; 7. Second limiting ring; 21. Strip groove; 51. Connecting portion; 52. Grinding portion. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] like Figures 1 to 7 As shown, this embodiment provides a sliding groove type self-centering sheet metal part inner hole grinding tool, which grinds the deep hole wall and the inner hole of the sheet metal part blank. Among them, the first limit ring 6 and the second limit ring 7 are adjusted according to the aperture of the deep hole and the inner hole of the sheet metal part blank. For example, when the aperture is small, the first limit ring 6 and the second limit ring 7 are rotated so that the first limit ring 6 and the second limit ring 7 are close to the strip groove 21, that is, the distance that the cutting plate 5 moves outward becomes smaller, and then, the grinding diameter becomes smaller; otherwise, the grinding diameter becomes larger.

[0029] Specifically, the grinding tool includes an integrally formed center rod 1 and front end rod 2, a first threaded portion 3 and a second threaded portion 4 respectively provided at the end of the front end rod 2, a plurality of strip grooves 21 provided on the front end rod 2 along the radial direction of the center rod 1, a cutting plate 5 correspondingly sleeved in the strip grooves 21, a first limiting ring 6 connected to the first threaded portion 3 by a thread, and a second limiting ring 7 connected to the second threaded portion 4 by a thread. Among them, the plurality of strip grooves 21 are equidistantly arranged in an annular shape on the edges of the front end rod 2, and the first threaded portion 3 and the second threaded portion 4 are correspondingly arranged at the ends of the strip grooves 21. In this embodiment, preferably, there are three strip grooves 21 and three cutting plates 5.

[0030] In this embodiment, the cutting plate 5 includes an integrally formed connecting portion 51 and a grinding portion 52. The connecting portion 51 is in a trapezoidal shape. After adjusting the first limiting ring 6 and the second limiting ring 7, the first limiting ring 6 and the second limiting ring 7 are pressed and contacted with the oblique side of the trapezoidal shape of the connecting portion 51. Figure 6 to Figure 7 As shown, when a larger grinding diameter is required, the first limiting ring 6 and the second limiting ring 7 are rotated away from the strip groove 21, that is, Figure 7 As shown, during the grinding process, due to the action of the rotating centrifugal force, the cutting plate 5 moves outward, and the trapezoidal bevel of the connecting portion 51 is pressed against the inner side of the first limiting ring 6 and the second limiting ring 7. In this embodiment, by rotating the first limiting ring 6 and the second limiting ring 7, the diameter of the cutting plate 5 expanded under the action of the centrifugal force changes, so as to realize the grinding of inner holes with different hole diameters.

[0031] In this embodiment, in order to prevent the first limiting ring 6 and the second limiting ring 7 from rotating during the grinding process, a first locking nut (not shown) is sleeved on the first threaded portion 3, and a second locking nut (not shown) is sleeved on the second threaded portion 4. The first locking nut is squeezed against the rear end of the first limiting ring 6, and the second locking nut is squeezed against the front end of the second limiting ring 7, so as to achieve position limitation of the first limiting ring 6 and the second limiting ring 7.

[0032] 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 slide-type self-centering sheet metal parts inner hole grinding tool, characterized in that: The invention comprises an integrally formed center rod (1) and a front end rod (2), a first threaded portion (3) and a second threaded portion (4) respectively provided at the end of the front end rod (2), a plurality of strip grooves (21) provided on the front end rod (2) along the radial direction of the center rod (1), a cutting plate (5) sleeved in the strip grooves (21) in a one-to-one correspondence, a first limiting ring (6) connected to the first threaded portion (3) by a thread, and a second limiting ring (7) connected to the second threaded portion (4) by a thread; the first limiting ring (6) and the second limiting ring (7) squeeze and limit the cutting plate (5) in the strip groove (21); A plurality of the strip grooves (21) are arranged in an annular manner and at equal intervals on the edges of the front end rod (2); the first threaded portion (3) and the second threaded portion (4) are arranged at the ends of the strip grooves (21) in a one-to-one correspondence.

2. A slide groove type self-centering sheet metal parts inner hole grinding tool according to claim 1, characterized in that: The cutting plate (5) comprises an integrally formed connecting portion (51) and a grinding portion (52); the connecting portion (51) is in a trapezoidal shape; the first limiting ring (6) and the second limiting ring (7) are in extrusion contact with the trapezoidal bevel of the connecting portion (51).

3. A slide groove type self-centering sheet metal parts inner hole grinding tool according to claim 1 or 2, characterized in that: The strip-shaped grooves (21) and the cutting plates (5) are each provided in three numbers.

4. A slide groove type self-centering sheet metal parts inner hole grinding tool according to claim 1 or 2, characterized in that: A first locking nut is sleeved on the first threaded portion (3); a second locking nut is sleeved on the second threaded portion (4); the first locking nut is squeezed on the rear end of the first limiting ring (6); and the second locking nut is squeezed on the front end of the second limiting ring (7).

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