Angle head with novel structure

Abstract

The angle head of the novel structure comprises an output shaft assembly, a shell, an input shaft assembly and a positioning disc assembly, the input shaft assembly comprises an input shaft, a bearing pressing plate, a bearing, a bevel gear, a cushion block and a screw, the input shaft penetrates through the bearing pressing plate and the bearing, the lower end of the input shaft is matched with the bevel gear, and the cushion block is arranged below the bevel gear. The screw penetrates through the cushion block to be connected with the input shaft, and the input shaft assembly penetrates through the positioning disc assembly and is fixed to the shell through the bearing pressing plate by means of the screw. The angle head can be selectively provided with a scale ring, and the scale ring is arranged on the outer surface of the shell in a sleeving mode and located between the positioning disc assembly and the shell. The angle head with the novel structure is simple in structure and simplified in assembly mode.

Description

Technical Field

[0001] This utility model relates to the field of machine tool accessories technology, and in particular to a new type of angle head. Background Technology

[0002] An angle head is an accessory device mounted on a machine tool spindle to change the output direction of the spindle, enabling the cutting tool to perform machining operations at different spatial angles. Common angle heads include 90° dual-output-axis angle heads, 90° four-output-axis angle heads, and adjustable tilt angle heads.

[0003] Specifically, existing angle head structures such as Figure 1 As shown, the installation method is as follows: First, the bearing 13 is installed in the bearing housing 5. Then, the outer ring of the bearing 13 is axially pressed and fixed by the bearing cap 6. The bearing housing 5 is then connected to the housing 4 with screws to form a fixed component. At the same time, the bearing housing 5 also limits the positioning plate assembly 2, thus forming a complete housing assembly. After the above-mentioned fixed structure is assembled, the cover plate 7, spacer ring, bevel gear 14, pad block 15 and input shaft 11 are assembled from top to bottom with screws, thereby fastening the inner ring of the bearing 13 to the input shaft 11 to form a rotating component. In order to achieve dustproof sealing, an axial annular groove is provided between the cover plate 7 and the bearing cap 6.

[0004] The existing technology has the following structural defects:

[0005] (1) As an intermediate component connecting the outer ring of bearing 13 and housing 4, bearing housing 5 needs to be matched with both with high precision. Its inner hole, outer cylinder, axial stop surface and other dimensions and form and position tolerances are extremely high. In addition, its thin-walled structure means that it needs to be considered in terms of material selection, heat treatment process, processing tooling, storage and transportation protection, resulting in complex processing technology and high manufacturing cost.

[0006] (2) The assembly process is complicated. Since the bearing housing 5 is connected to the housing 4 by screws, and the bearing cap 6 needs to be threaded to the bearing housing 5, various tightening tools are required during the installation process. At the same time, since the cover plate 7 is used for sealing, it blocks the operating space of the threaded connection when assembled, which further increases the assembly difficulty. The housing assembly must be completed first before the cover plate 7 and the input shaft 11 can be inserted from the top of the bearing 13, and the spacer, bevel gear 14, shim 15 and screws can be installed one by one from the bottom, and the final tightening can be completed.

[0007] (3) It is not conducive to abnormal inspection during the assembly process, which reduces assembly efficiency and quality stability, and also brings great inconvenience to later maintenance and disassembly.

[0008] Therefore, there is an urgent need to provide a new type of angle head with a simple structure and simplified assembly method to solve the above-mentioned technical problems. Utility Model Content

[0009] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a new structural angle head that maintains structural stability while having a simpler structure and simplifies the overall assembly process.

[0010] The technical solution adopted by this utility model to solve its technical problem is: a new structural angle head, including an output shaft assembly, an input shaft assembly, a positioning plate assembly, and a housing. The input shaft assembly includes an input shaft, a bearing pressure plate, a bearing, a bevel gear, a pad, and screws. The input shaft passes through the bearing pressure plate and the bearing in sequence, and the lower end of the input shaft is connected to the bevel gear. The pad is embedded below the bevel gear and is connected to the bottom end of the input shaft by screws passing through the pad. The input shaft assembly passes through the positioning plate assembly and is fixed to the housing by screws via the bearing pressure plate on it.

[0011] Furthermore, the angle head may also include a scale ring, which is sleeved on the outer surface of the housing and located between the positioning disk assembly and the housing.

[0012] Furthermore, the bearing pressure plate includes an outer annular mounting portion and a central opening. The outer annular mounting portion is fixedly connected to the housing. The central opening is used for the input shaft to pass through. The lower surface of the bearing pressure plate is provided with an annular groove. The upper surface of the bearing is formed with an annular flange that mates with the annular groove. The annular groove and the annular flange are interlocked and connected.

[0013] Furthermore, a sealing structure is provided between the bearing pressure plate and the input shaft, which is composed of multiple axially spaced annular grooves and annular flanges nested together.

[0014] Furthermore, the housing includes a first mounting hole and at least one second mounting hole, the input shaft assembly passes through the first mounting hole, and the end face of the first mounting hole is provided with a plurality of threaded holes for mounting bearing pressure plates in the circumferential direction; the output shaft assembly passes through the second mounting hole.

[0015] The beneficial effects of this utility model are:

[0016] This invention eliminates the reliance on additional bearing seats, spacers, and other parts in traditional structures by having the input shaft assembly pass through the positioning plate assembly and connected to the housing via screws using the bearing pressure plate on it. This reduces the number of parts and improves the simplicity of the structure.

[0017] This utility model constructs an input shaft assembly with a compact structure and clear component relationships by sequentially passing the input shaft through the bearing pressure plate and bearing, connecting the lower end with the bevel gear, and fixing it at the bottom end with a pad and screws. This facilitates the pre-assembly of the overall assembly. Attached Figure Description

[0018] Figure 1 This is a breakdown diagram of the relevant components of the input terminal structure in existing technology;

[0019] Figure 2 This is a cross-sectional view of the input end of a novel angle head according to this utility model;

[0020] Figure 3 This is an exploded view of the input shaft assembly in a novel angle head according to this utility model;

[0021] Figure 4 This is a schematic diagram of the assembly of relevant parts of the input end of a novel angle head according to this utility model;

[0022] Figure 5 This is a schematic diagram of an embodiment of a novel angle head according to this utility model;

[0023] Figure 6 This is a schematic diagram of a second embodiment of a novel angle head according to this utility model;

[0024] In the figure, 1-input shaft assembly; 11-input shaft; 12-bearing pressure plate; 13-bearing; 14-bevel gear; 15-pad; 16-screw; 2-positioning plate assembly; 3-scale ring; 4-housing; 41-first mounting hole; 42-second mounting hole; 5-bearing seat; 6-bearing cap; 7-cover plate. Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0026] Special note: The input end mentioned in this utility model mainly refers to the various components that constitute the input shaft mounting and support structure, including the input shaft assembly 1, the positioning disk assembly 2, the scale ring 3, and the housing 4. The above components constitute one side of the functional structure connecting the angle head and the machine tool spindle, which is different from the output shaft assembly used for tool driving and is the core area of ​​the technical improvement described in this utility model.

[0027] like Figure 2 The diagram shows the input-end components, including an input shaft assembly 1, a positioning disk assembly 2, a scale ring 3, and a housing 4. The input shaft assembly 1 is mounted on the housing 4 and passes through the positioning disk assembly 2; the scale ring 3 is fitted onto the outer surface of the housing 4 and is located between the positioning disk assembly 2 and the housing 4.

[0028] Specifically, such as Figure 2 and Figure 3As shown, the input shaft assembly 1 includes an input shaft 11, a bearing plate 12, a bearing 13, a bevel gear 14, a spacer 15, and a screw 16. The upper end of the input shaft 11 is used to connect to the machine tool spindle, and the lower end passes through the bearing plate 12 and the bearing 13 in sequence. The bottom end of the input shaft 11 has an annular protrusion that is embedded in the central hole of the bevel gear 14, thereby forming an axial limiting fit with the bevel gear 14. The spacer 15 is embedded below the bevel gear 14, and the screw 16 passes through the spacer 15 from bottom to top and engages with the threaded hole at the bottom end of the input shaft 11 by means of a threaded connection, which also fastens the bevel gear 14 to the input shaft 11, thereby improving the overall stability of the input shaft assembly.

[0029] Furthermore, the bearing pressure plate 12 has an annular structure with an outer annular mounting portion on its outer periphery and a central opening on its inner periphery. The outer annular mounting portion is fixed to the upper end of the housing 4 by screws, and the central opening is for the input shaft 11 to pass through. The lower surface of the bearing pressure plate 12 has an annular groove along the radial direction, and the upper part of the outer ring of the bearing 13 has an annular flange that mates with the annular groove. The annular groove and the annular flange fit together to achieve a stable connection between the bearing 13 and the bearing pressure plate 12. In addition, between the central opening of the bearing pressure plate 12 and the input shaft 11, multiple annular grooves and annular flanges are arranged at intervals along the axis in the axial direction. The multiple concave and convex structures alternately cooperate to form a nested sealing structure. Through the nested structure of the annular grooves and annular flanges between the bearing pressure plate 12 and the input shaft 11, the dustproof sealing effect can be effectively enhanced without additional seals.

[0030] like Figure 4 As shown, a positioning disk assembly 2 and a configurable scale ring 3 are fitted onto the outside of the housing 4. The scale ring 3 is located between the positioning disk assembly 2 and the housing 4 and is used to mark and read the rotation angle during angle head adjustment. The input shaft assembly 1 is inserted from top to bottom into the first mounting hole 41 of the housing 4. The outer annular mounting part of the bearing pressure plate 12 abuts against the upper end face of the housing 4 and is fastened to the housing 4 by several screws passing through the through holes of the bearing pressure plate 12 and threaded holes circumferentially provided on the end face of the first mounting hole 41 of the housing 4, thereby securing the input shaft assembly 1 to the housing 4. The housing 4 may also have at least one second mounting hole 42 on its side wall or bottom for mounting the output shaft assembly. The number of the second mounting holes 42 is adapted to the specific angle head structure to meet the usage requirements of multi-output shaft angle head structures.

[0031] Furthermore, in this document, the first and second mounting holes are merely used to distinguish the mounting locations of the input shaft assembly and the output shaft assembly, and do not necessarily require or imply any actual relationship or order between these mounting holes.

[0032] Furthermore, such as Figure 5 and Figure 6The figures shown are schematic diagrams of two embodiments of a novel angle head according to this utility model. Figure 5 The embodiment shown is a 90° four-output shaft structure. The four side walls of the housing 4 are each provided with a second mounting hole 42, and the four output shaft assemblies are respectively inserted into these second mounting holes 42, suitable for multi-station machining requirements; while Figure 6 The illustrated embodiment is a 90° dual output shaft structure. Two second mounting holes 42 are provided on the two opposite side walls of the housing 4, and two output shaft assemblies are installed thereon, adapting to dual-station applications in some machining scenarios. The two embodiments share the same basic structure, both including an input shaft assembly, an output shaft assembly, a positioning disk assembly, a scale ring, and basic housing components. Compared to traditional structures, the positioning disk assembly has a smaller outer diameter, achieving structural lightweighting, which helps reduce the weight of the angle head body and avoids interference with the tool magazine clamping device when adapted to certain machine tools. Simultaneously, both embodiments include a scale ring 3, which is fitted onto the outer surface of the housing 4, located between the positioning disk assembly 2 and the housing 4. The scale ring 3 is marked with angle numerical graduations, which, in conjunction with the reference lines of the positioning disk assembly 2, allow for intuitive and convenient reading of the rotation angle when adjusting the angle head's rotation angle around the machine tool spindle, improving the accuracy and operability of angle adjustment.

[0033] It should be noted that, Figure 5 and Figure 6 The embodiments shown are merely some specific structural examples of this utility model, intended to illustrate the application forms of this utility model under different output shaft configurations and structural combinations. Therefore, the protection scope of this utility model cannot be limited to these specific embodiments.

[0034] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A novel angle head, comprising an output shaft assembly, an input shaft assembly, a positioning disk assembly, and a housing, characterized in that: The input shaft assembly includes an input shaft, a bearing plate, a bearing, a bevel gear, a spacer, and screws. The input shaft passes through the bearing plate and the bearing in sequence, and the lower end of the input shaft is connected to the bevel gear. The spacer is embedded below the bevel gear and is connected to the bottom end of the input shaft by screws passing through the spacer. The input shaft assembly passes through the positioning plate assembly and is fixed to the housing by screws via the bearing plate on it.

2. The novel angle head according to claim 1, characterized in that: The angle head may also include a scale ring, which is sleeved on the outer surface of the housing and located between the positioning disk assembly and the housing.

3. The novel angle head according to claim 1, characterized in that: The bearing pressure plate includes an outer annular mounting part and a central opening. The outer annular mounting part is fixedly connected to the housing. The central opening is used for the input shaft to pass through. The lower surface of the bearing pressure plate is provided with an annular groove. The upper surface of the bearing is formed with an annular flange that mates with the annular groove. The annular groove and the annular flange are interlocked and connected.

4. The novel angle head according to claim 3, characterized in that: A sealing structure is provided between the bearing pressure plate and the input shaft, consisting of multiple axially spaced annular grooves and annular flanges nested together.

5. The novel angle head according to claim 1, characterized in that: The housing includes a first mounting hole and at least one second mounting hole. The input shaft assembly passes through the first mounting hole, and the end face of the first mounting hole is provided with a plurality of threaded holes for mounting bearing pressure plates. The output shaft assembly passes through the second mounting hole.

Images