Single-arm index plate structure

Abstract

The utility model relates to the field of index plates, in particular to a single-arm index plate structure which comprises a first rotary table and a second rotary table connected with the first rotary table, the first rotary table comprises a shell, a driving device is connected to the shell, and the driving end of the driving device penetrates through the shell and is connected with a rotary plate through a speed reduction device; the edge of the upper end of the shell extends upwards to form an annular first boss, a first step is formed on the inner side of the first boss, and an annular dustproof block is arranged on the first step; the edge of the lower end of the rotating disc extends downwards to form a second boss, and a second step is formed on the outer side of the second boss. A tiny gap is formed between the upper end surface of the dustproof block and the step surface of the second step, so that most impurities can be prevented from entering; when part of small-size or irregular impurities enter the dust-proof cavity through the gap between the dust-proof cavity and the rotating disc, repeated extrusion of the impurities in the gap and friction between the impurities and the rotating disc can be avoided, and the influence on stable operation of the rotating disc is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of indexing plates, in particular to a single-arm indexing plate structure. Background Art

[0002] A dividing plate is a machine tool accessory that holds a workpiece on a chuck or between two centers, rotating, indexing, and positioning it. It is commonly used in automated equipment. During automated production, the dividing plate's accuracy directly impacts the workpiece's motion and stability. Therefore, high precision is required. However, during actual machining, impurities such as debris and particles are generated. If these impurities enter the interior of the turntable, they can affect the stable operation of the dividing plate and cause errors in machining accuracy. In the prior art, the gap between the turntable and the housing is typically kept small to prevent the entry of most impurities. However, some irregularly shaped impurities can be drawn into the gap as the turntable rotates. If not promptly removed, they will be continuously squeezed and rubbed against the turntable as it rotates, affecting its stable operation. Therefore, preventing impurities from entering the interior of the dividing plate is a question that those skilled in the art need to consider. Utility Model Content

[0003] The utility model aims to provide a single-arm indexing plate structure to solve the problem in the prior art that impurities enter the interior of the indexing plate and affect the stable operation of the indexing plate.

[0004] The technical solution of the utility model is: a single-arm indexing plate structure, comprising a first turntable and a second turntable connected to the first turntable, wherein the first turntable comprises a housing, a driving device is connected to the housing, a driving end of the driving device passes through the housing and is connected to the turntable via a reduction device;

[0005] The upper end edge of the shell extends upward to form an annular first boss, the inner side of the first boss forms a first step, and the first step is provided with an annular dust block;

[0006] The lower end edge of the turntable extends downward to form a second boss, the outer side of the second boss forms a second step, the step surface of the second step overlaps the upper end of the dust block, and the outer side surface of the second boss is in contact with the dust block.

[0007] Preferably, a third step is provided inside the first step, and the second boss extends downward and is provided directly above the third step.

[0008] Preferably, a first inclined surface is provided on the inner side of the dustproof block close to the second step, and the first inclined surface, the step surface of the second step and the outer side surface of the second boss together form a dustproof cavity.

[0009] Preferably, a connecting flange is provided on the side of the shell, and the first turntable is connected to the second turntable via the connecting flange.

[0010] Preferably, an electrical channel is provided on the connecting flange.

[0011] Preferably, a dust cover is connected to the lower end of the shell, and the driving device is arranged in the dust cover.

[0012] Preferably, a fourth step is provided inside the third step, a limiting device is connected to the fourth step, and an upper end of the outer side of the limiting device is gap-connected to the inner side wall of the second boss.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) The cross-arrangement of the first boss, the second boss, the first step, the second step, and the third step can block most impurities and prevent them from entering the interior of the indexing plate;

[0015] Among them, there is a tiny gap between the upper end surface of the dust-proof block and the step surface of the second step, which can prevent most impurities from entering; and when some smaller or irregular impurities enter through the gap between the two, they will enter the dust-proof cavity, which can avoid the impurities from being repeatedly squeezed in the gap and rubbed with the turntable, thereby avoiding affecting the stable operation of the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a structural diagram of the single-arm indexing plate structure of the utility model;

[0018] Figure 2 This is a schematic top view of the single-arm indexing plate structure of the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0020] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0021] Among them: first turntable 1, second turntable 2, shell 3, connecting flange 31, electrical channel 311, first boss 32, first step 33, third step 34, fourth step 35, driving device 4, reduction device 5, turntable 6, second boss 61, second step 62, dust cover 7, dust block 8, dust cavity 8a, first inclined surface 81, and limiting device 9. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0023] like Figures 1-4 As shown, the utility model is applied to five-axis machining equipment, specifically the fourth and fifth axis mechanisms in the machining equipment, that is, the rotation mechanisms of the A-axis and the C-axis. The workpiece to be processed is mounted on the turntable, and the first turntable and the second turntable drive the workpiece to complete the rotation of the A-axis and the C-axis. In the process of workpiece processing, a large number of impurities such as debris and particles will be generated, among which most of the impurities are removed by the flow of cooling water or the rotation of the tool; and generally, the gap between the turntable and the shell is set to be small, and most of the remaining impurities will not pass through the gap into the interior of the dividing plate, but some small and or irregular impurities will be drawn into the gap. As the turntable rotates, if the impurities cannot be rolled out with the turntable in time, they will be continuously squeezed and rubbed with the turntable in the gap, which can easily cause the turntable to shake, affecting the stability of the turntable rotation, and thus affecting the accuracy of workpiece processing. The utility model avoids the influence of impurities by designing the structure between the turntable and the shell, specifically:

[0024] A single-arm dividing plate structure includes a first turntable 1 and a second turntable 2 connected to the first turntable 1. The first turntable 1 includes a shell 3. The shell 3 is connected to a drive device 4. The drive device 4 is fixedly connected to the shell 3 and its drive end passes through the shell 3 and is connected to a turntable 6 through a reduction device 5. A connecting flange 31 is provided on the side of the shell 3. The first turntable 1 is connected to the second turntable 2 through the connecting flange 31. The second turntable 2 can drive the first turntable 1 to rotate through the connecting flange 31. An electrical channel 311 is provided on the connecting flange 31. In the first turntable 1, the control line, the power transmission line of the drive device 4, etc. are introduced through the electrical channel 311 to avoid the influence of complex lines on machining. The lower end of the shell 3 is connected to a dust cover 7. The drive device 4 is arranged in the dust cover 7 to avoid the influence of impurities on the drive device 4 during the machining process.

[0025] In this embodiment, for ease of description, the end face of the turntable 6 connected to the workpiece is referred to as the upper end or top. The upper edge of the housing 3 extends upward to form an annular first boss 32, the inner side of which forms a first step 33, on which an annular dust block 8 is disposed. The lower edge of the turntable 6 extends downward to form a second boss 61, the outer side of which forms a second step 62. The stepped surface of the second step 62 overlaps the upper end of the dust block 8, and the outer side surface of the second boss 61 contacts and engages with the dust block 8.

[0026] There is a small gap between the upper end surface of the dust block 8 and the step surface of the second step 62. This gap is relatively small, preventing most impurities from entering through this gap during workpiece processing. A first inclined surface 81 is provided on the inner side of the dust block 8 near the second step 62. The first inclined surface 81, the step surface of the second step 62, and the outer surface of the second boss 61 together form a dust chamber 8a. When a small amount of impurities are drawn into this gap during the rotation of the turntable 6, some of the impurities will be drawn out as the turntable 6 rotates; other impurities will further move inward into the dust chamber 8a. The larger space of the dust chamber 8a prevents repeated squeezing and friction between the turntable 6 and the housing 3, thereby preventing the impurities from affecting the operation of the turntable 6. Furthermore, the dust block 8 is configured to be in a contact connection with the outer side of the second boss 61. During the rotation of the turntable 6, the dust block 8 and the dust block 8 slide relative to each other, which also keeps the impurities within the dust chamber 8a and prevents them from moving further into the indexing disk. It should be noted that in long-term actual operation practice, the impurities that enter the dustproof chamber 8a are very few, and the impurities that enter therein have no effect on the operation of the turntable 6. Therefore, there is no need to clean it frequently, or even no need to clean it.

[0027] Furthermore, a third step 34 is provided inside the first step 33, and a second boss 61 extends downward and is positioned directly above the third step 34. A fourth step 35 is provided inside the third step 34, and a limiter 9 is connected to the fourth step 35. The upper end of the limiter 9 is in gap contact with the inner sidewall of the second boss 61. The extension of the second boss 61 toward the third step 34 further isolates the interior of the indexing plate from the exterior.

[0028] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A single-arm indexing plate structure, characterized in that: The invention comprises a first turntable and a second turntable connected to the first turntable, wherein the first turntable comprises a housing, a driving device is connected to the housing, a driving end of the driving device passes through the housing and is connected to a turntable via a reduction device; The upper end edge of the shell extends upward to form an annular first boss, the inner side of the first boss forms a first step, and the first step is provided with an annular dust block; The lower end edge of the turntable extends downward to form a second boss, the outer side of the second boss forms a second step, the step surface of the second step overlaps the upper end of the dust block, and the outer side surface of the second boss is in contact with the dust block.

2. The single-arm indexing plate structure according to claim 1, characterized in that: A third step is provided inside the first step, and the second boss extends downward and is provided just above the third step.

3. The single-arm indexing plate structure according to claim 1, characterized in that: The dustproof block is provided with a first inclined surface on the inner side close to the second step, and the first inclined surface, the step surface of the second step and the outer side surface of the second boss together form a dustproof cavity.

4. The single-arm indexing plate structure according to claim 1, characterized in that: A connecting flange is provided on the side of the shell, and the first turntable is connected to the second turntable via the connecting flange.

5. The single-arm indexing plate structure according to claim 4, characterized in that: An electrical channel is provided on the connecting flange.

6. The single-arm indexing plate structure according to claim 1, characterized in that: The lower end of the shell is connected with a dust cover, and the driving device is arranged in the dust cover.

7. The single-arm indexing plate structure according to claim 2, characterized in that: A fourth step is provided inside the third step, a limiting device is connected to the fourth step, and an upper end of the outer side of the limiting device is gap-connected to the inner side wall of the second boss.

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