Bevel gear numerical control processing machine tool

Abstract

The application discloses the technical field of gear processing machine tools, and discloses a bevel gear numerical control processing machine tool which comprises a bed body, a first sliding table which is slidably arranged on the bed body along the width direction of the bed body, a second sliding table which is slidably arranged on the bed body along the length direction of the bed body, a third sliding table which is vertically slidably arranged on the second sliding table, a rotary main shaft which is rotatably arranged on the first sliding table around the axis of the rotary main shaft, a workpiece main shaft which is rotatably arranged on the rotary main shaft around the axis of the workpiece main shaft, and a grinding wheel main shaft which is rotatably arranged on the third sliding table around the axis of the grinding wheel main shaft. The rotary main shaft drives the workpiece main shaft to rotate synchronously in the axial direction. The first sliding table is arranged at the first end of the bed body in the length direction, and the second sliding table is slid along the Z axis to drive the grinding wheel main shaft to move close to or away from the workpiece main shaft. The bevel gear numerical control processing machine tool has the advantages that the stroke of each linear shaft is short, the feeding and discharging are facilitated, the weight of each component is uniformly distributed, the deformation of the bed body of the machine tool is reduced, and the machining precision of the machine tool is improved.

Description

Technical Field

[0001] This utility model relates to the field of gear processing machine tool technology, and in particular to a bevel gear CNC machining machine tool. Background Technology

[0002] CNC bevel gear machine tools consist of three linear axes (X, Y, Z) and three rotary axes (A, B, C). A is the workpiece axis, C is the tool axis, and B is the oscillating axis. The B axis is used to change the angle between the A and C axes. By controlling each axis to perform six-axis five-linkage or six-axis six-linkage, it is possible to process straight bevel gears and various spiral bevel gears with milling cutters. It can also process face gears, internal cylindrical gears, and external cylindrical gears with gear turning cutters.

[0003] However, current CNC bevel gear machine tools also have problems such as long strokes of each linear axis, uneven weight distribution of each component causing deformation of the machine tool bed, which in turn affects the machining accuracy of the machine tool and makes loading and unloading inconvenient. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a bevel gear CNC machining tool with short strokes for each linear axis, facilitating loading and unloading, and uniform weight distribution of each component, which can reduce deformation of the machine tool bed and thus improve the machining accuracy of the machine tool.

[0005] The bevel gear CNC machining tool according to an embodiment of the present utility model includes:

[0006] Bed frame;

[0007] The first slide is slidably mounted on the bed along the X-axis direction;

[0008] The second slide is slidably mounted on the bed along the Z-axis direction;

[0009] The third slide is slidably mounted on the second slide along the Y-axis direction;

[0010] The rotary spindle is mounted on the first slide table and rotates around its own axis;

[0011] The workpiece spindle is rotatably mounted on the rotary spindle about its own axis, and the workpiece spindle is used to mount the workpiece to be processed;

[0012] The grinding wheel spindle is rotatably mounted on the third slide about its own axis, and the grinding wheel spindle is used to mount the grinding wheel structure;

[0013] Wherein, the X-axis is the width direction of the bed, the Z-axis is the length direction of the bed, and the Y-axis is the vertical direction; the axis of the rotary spindle extends along the X-axis direction, the axis of the grinding wheel spindle extends along the Z-axis direction, and the axial rotation of the rotary spindle drives the workpiece spindle to rotate synchronously;

[0014] The first slide is installed at the first end of the bed along its length, and the second slide slides along the Z-axis, causing the grinding wheel spindle to move closer to or further away from the workpiece spindle.

[0015] The bevel gear CNC machining tool according to the embodiments of this utility model has at least the following beneficial effects:

[0016] By installing the first slide at the first end of the bed's length direction, and the second slide sliding along the Z-axis towards or away from the first slide, the weight of each linear axis is evenly distributed along the length of the bed, reducing the probability of bed deformation and improving the machine tool's machining accuracy. This also facilitates loading and unloading operations for the operator at the first end of the bed's length direction. Since there is no linkage between the first slide sliding along the X-axis and the second slide sliding along the Z-axis, if the workpiece's position is adjusted during machining, the grinding wheel structure does not need to be adjusted synchronously. Similarly, if the grinding wheel structure's position is adjusted, the workpiece does not need to be adjusted synchronously, thus reducing the travel of each linear axis and improving machining efficiency.

[0017] According to some embodiments of the present invention, the workpiece spindle is further equipped with a grinding wheel dresser, which is installed on the side of the workpiece spindle facing the grinding wheel spindle.

[0018] According to some embodiments of the present invention, the grinding wheel dresser is installed in the middle of the workpiece spindle.

[0019] According to some embodiments of this utility model, when the axis of the workpiece spindle is vertical, the rotation axis of the grinding wheel dresser is parallel to the rotation axis of the grinding wheel spindle.

[0020] According to some embodiments of the present invention, the bevel gear CNC machining tool further includes a cooling system, the cooling system including a cooling nozzle, the cooling nozzle being mounted on the workpiece spindle.

[0021] According to some embodiments of this utility model, the origin of the grinding wheel spindle is defined as:

[0022] When the axis of the workpiece spindle is vertical, the intersection point of the workpiece spindle axis and the rotary spindle axis within the plane containing the upper surface of the workpiece spindle.

[0023] According to some embodiments of the present invention, the bevel gear CNC machining tool further includes a measuring system, which is mounted on the third slide. The measuring system has a measuring rod along the Z-axis and a measuring stylus perpendicularly disposed at the end of the measuring rod.

[0024] According to some embodiments of the present invention, the bed is equipped with a first driving device and a second driving device. The first driving device is used to drive the first slide to slide along the X-axis, and the second driving device is used to drive the second slide to slide along the Z-axis.

[0025] According to some embodiments of the present invention, the second slide is equipped with a third driving device, which is used to drive the third slide to move up and down along the Y-axis.

[0026] According to some embodiments of the present invention, the second slide table is provided with a slide rail, a slide seat is slidably mounted on the slide rail, and the third slide table is mounted on the slide seat and connected to the third driving device.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0029] Figure 1 This is an axonometric view of the first angle of an embodiment of this application;

[0030] Figure 2 This is an axonometric view of the second angle of the embodiment of the application;

[0031] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0032] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0033] Icon labels:

[0034] Bed 100, first drive unit 110, second drive unit 120;

[0035] First slide 200, rotary spindle 210;

[0036] Second slide 300, slide rail 310, third drive device 320;

[0037] Third slide 400, grinding wheel spindle 410;

[0038] Workpiece spindle 500, grinding wheel dresser 510, cooling nozzle 520;

[0039] Measuring rod 600, probe 610. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, etc., indicating the directional or positional relationship, are based on the directional or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0043] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0044] Reference Figures 1 to 4 This application discloses a CNC machining tool for bevel gears, including a bed 100, a first slide 200, a second slide 300, and a third slide 400. The first slide 200 is slidably mounted on the bed 100 along the X-axis, the second slide 300 is slidably mounted on the bed 100 along the Z-axis, and the third slide 400 is slidably mounted on the second slide 300 along the Y-axis. (Refer to...) Figure 1 As shown, the X-axis is the width direction of the bed 100, the Z-axis is the length direction of the bed 100, and the Y-axis is the vertical direction. That is, the third slide 400 is mounted on the second slide 300 in a height-adjustable manner.

[0045] The first slide 200 is equipped with a rotary spindle 210 that can rotate around its own axis. A workpiece spindle 500 that can rotate around its own axis is mounted at the end of the rotary spindle 210. The workpiece spindle 500 is used to mount the workpiece to be processed; in this embodiment, the workpiece to be processed mainly refers to a gear. The third slide 400 is equipped with a grinding wheel spindle 410 that can rotate around its own axis. The grinding wheel spindle 410 is used to mount a grinding wheel structure, which is used to process the gear workpiece. (Refer to...) Figure 1As shown, the axis of the rotary spindle 210 extends along the X-axis, and the axis of the grinding wheel spindle 410 extends along the Z-axis. The axial rotation of the rotary spindle 210 drives the workpiece spindle 500 to rotate synchronously. Therefore, the axial direction of the rotary spindle 210 can be adjusted by oscillating through its rotation, thereby changing the angle between the gear workpiece and the grinding wheel structure. The axis of rotation of the rotary spindle 210 is... Figure 1 The B-axis shown is the rotation axis of the grinding wheel spindle 410. Figure 1 The C-axis shown is the axis of rotation of the workpiece spindle 500. Figure 1 The A-axis is shown in the diagram.

[0046] In the embodiments of this application, reference is made to Figure 1 As shown, the first slide 200 is installed at the first end of the bed 100 along its length. The second slide 300 slides along the Z-axis, causing the grinding wheel spindle 410 to move closer to or further away from the workpiece spindle 500. However, the second slide 300 cannot slide to the first end of the bed 100 along its length. Therefore, the second slide 300 and the third slide 400 are mainly located at the second end of the bed 100 along its length, thus achieving a uniform weight distribution along the length of the bed 100, reducing the probability of deformation of the bed 100, and thereby improving the machining accuracy of the machine tool. (Refer to...) Figure 1 , Figure 2 As shown, when the second slide 300 slides away from the first slide 200, the first slide 200 can slide along the X-axis to move the workpiece spindle 500 to the edge of the bed 100, so that the first end of the bed 100 in the length direction is very convenient for loading and unloading gear workpieces, and at the same time, it is convenient for manual or automatic loading and unloading.

[0047] Furthermore, there is no linkage between the first slide 200 sliding along the X-axis and the second slide 300 sliding along the Z-axis. Therefore, when the workpiece is being processed, if the gear workpiece is being adjusted in position, the grinding wheel structure does not need to be adjusted synchronously. Similarly, if the grinding wheel structure is being adjusted in position, the gear workpiece does not need to be adjusted synchronously. This shortens the stroke of each linear axis and helps to improve processing efficiency.

[0048] In the embodiments of this application, reference is made to Figure 1 , Figure 2 As shown, the bed 100 is equipped with a first drive device 110 and a second drive device 120. The first drive device 110 is installed on one side of the bed 100 in the width direction and is used to drive the first slide 200 to slide along the X-axis. The second drive device 120 is installed at the second end of the bed 100 in the length direction and is used to drive the second slide 300 to slide along the Z-axis. The first drive device 110 and the second drive device 120 are preferably motors. The power of the motors of the first drive device 110 and the second drive device 120 can be purchased from existing products according to actual needs, and is not limited in this embodiment.

[0049] In the embodiments of this application, reference is made to Figure 1 , Figure 2 As shown, the second slide 300 is equipped with a third drive device 320, which drives the third slide 400 to move up and down along the Y-axis. Specifically, the second slide 300 has two slide rails 310, which are spaced apart. Each slide rail 310 has a sliding mount. The third slide 400 is mounted on the sliding mount, for example, by bolts or other fasteners. The third drive device 320 is preferably a motor. The motor power of the third drive device 320 can be purchased from existing products according to actual needs, and is not limited in this embodiment. The third slide 400 and the third drive device 320 are connected in a transmission manner.

[0050] In the embodiments of this application, the grinding wheel structure installed at the end of the grinding wheel spindle 410 is mainly used for machining gear workpieces. However, the grinding wheel structure will wear after a set machining time, thus requiring grinding wheel dressing. To facilitate grinding wheel dressing, the workpiece spindle 500 of this embodiment is also equipped with a grinding wheel dresser 510, which is installed on the side of the workpiece spindle 500 facing the grinding wheel spindle 410. The axis of the grinding wheel dresser 510 rotates as follows: Figure 1 The C1 axis is shown in the diagram.

[0051] To facilitate the dressing of the grinding wheel structure by the grinding wheel dresser 510, refer to... Figure 2 As shown, when the axis of the workpiece spindle 500 is vertical, the rotation axis of the grinding wheel dresser 510 is parallel to the rotation axis of the grinding wheel spindle 410. When the grinding wheel structure extends into the grinding wheel dresser 510 for dressing, the axis of the grinding wheel spindle 410 is collinear with the axis of the grinding wheel dresser 510.

[0052] To facilitate the movement of the grinding wheel spindle 410 and reduce its reciprocating motion, the grinding wheel dresser 510 is mounted on the workpiece spindle 500, specifically at its center. The origin of the grinding wheel spindle 410 is defined as the intersection of the workpiece spindle 500 axis and the rotary spindle 210 axis within the plane containing the upper surface of the workpiece spindle 500 when the workpiece spindle 500 axis is vertical. When the grinding wheel spindle 410 moves upward along the origin, its grinding wheel structure is used to process the gear workpiece mounted at the end of the workpiece spindle 500. When the grinding wheel spindle 410 moves up and down along the origin until its axis is collinear with the axis of the grinding wheel dresser 510, its grinding wheel structure can extend into the grinding wheel dresser 510 for sand dressing.

[0053] In embodiments of this application, the bevel gear CNC machining tool further includes a cooling system, which includes a cooling nozzle 520 mounted on the workpiece spindle 500. Specifically, refer to... Figure 4 As shown, the cooling nozzle 520 can spray coolant to cool the grinding wheel structure, thereby extending the service life of the grinding wheel structure and improving the machining quality. However, as the grinding wheel structure wears, the position of the cooling nozzle 520 aligned with the grinding wheel structure will change, thus requiring adjustment of the position of the cooling nozzle 520, which affects the machining efficiency. To avoid such problems, the cooling nozzle 520 in this embodiment is installed on the workpiece spindle 500. By spraying coolant onto the gear workpiece, it can always ensure that the grinding wheel structure is cooled, regardless of whether the grinding wheel structure is worn.

[0054] Reference Figure 4 As shown, a nozzle structure is also provided on the outer periphery of the grinding wheel dresser 510 to spray water onto the grinding wheel dresser 510 for cooling.

[0055] In embodiments of this application, the bevel gear CNC machining tool further includes a measuring system mounted on a third slide 400. The measuring system has a measuring rod 600 along the Z-axis and a probe 610 perpendicularly disposed at the end of the measuring rod 600. Specifically, refer to... Figure 3 As shown, the measuring rod 600 and the probe 610 are installed below the grinding wheel spindle 410. The gear machining process mainly includes: gear blank machining, tooth surface machining, heat treatment, and tooth surface finishing. The gear blank is mainly a forging, bar stock, or casting. The blank is first normalized to improve its machinability and facilitate cutting. Then, rough machining is performed. According to the gear design requirements, the blank is first machined into a rough shape, leaving a large allowance. Then, semi-finishing of the tooth surface, such as turning, rolling, and shaping, is performed to basically form the gear. After that, the gear is heat treated to improve its mechanical properties. Depending on the usage requirements and the materials used, there are tempering, carburizing and quenching, and high-frequency induction heating quenching of the tooth surface. Finally, the gear is finished, with the datum and tooth profile being finely machined. After the tooth surface is machined, it needs to be measured in order to allocate the allowance or detect the machining error. During the measurement, the probe 610 can be conveniently inserted into the tooth groove of the gear to measure the tooth surface by using the relative movement and swing of the first slide 200 and the third slide 400.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine the different embodiments or examples described in this specification.

[0057] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A CNC machining tool for bevel gears, characterized in that, include: Bed frame; The first slide is slidably mounted on the bed along the X-axis direction; The second slide is slidably mounted on the bed along the Z-axis direction; The third slide is slidably mounted on the second slide along the Y-axis direction; The rotary spindle is mounted on the first slide table and rotates around its own axis; The workpiece spindle is rotatably mounted on the rotary spindle about its own axis, and the workpiece spindle is used to mount the workpiece to be processed; The grinding wheel spindle is rotatably mounted on the third slide about its own axis, and the grinding wheel spindle is used to mount the grinding wheel structure; Wherein, the X-axis is the width direction of the bed, the Z-axis is the length direction of the bed, and the Y-axis is the vertical direction; the axis of the rotary spindle extends along the X-axis direction, the axis of the grinding wheel spindle extends along the Z-axis direction, and the axial rotation of the rotary spindle drives the workpiece spindle to rotate synchronously; The first slide is installed at the first end of the bed along its length, and the second slide slides along the Z-axis, causing the grinding wheel spindle to move closer to or further away from the workpiece spindle.

2. The bevel gear CNC machining tool according to claim 1, characterized in that: The workpiece spindle is also equipped with a grinding wheel dresser, which is installed on the side of the workpiece spindle facing the grinding wheel spindle.

3. The bevel gear CNC machining tool according to claim 2, characterized in that: The grinding wheel dresser is installed in the middle of the workpiece spindle.

4. The bevel gear CNC machining tool according to claim 2, characterized in that: When the axis of the workpiece spindle is vertical, the rotation axis of the grinding wheel dresser is parallel to the rotation axis of the grinding wheel spindle.

5. The bevel gear CNC machining tool according to claim 1, characterized in that: The bevel gear CNC machining tool also includes a cooling system, which includes cooling nozzles mounted on the workpiece spindle.

6. The bevel gear CNC machining tool according to claim 1, characterized in that: The origin of the grinding wheel spindle is defined as: When the axis of the workpiece spindle is vertical, the intersection point of the workpiece spindle axis and the rotary spindle axis within the plane containing the upper surface of the workpiece spindle.

7. The bevel gear CNC machining tool according to claim 1, characterized in that: The bevel gear CNC machining tool also includes a measuring system, which is mounted on the third slide. The measuring system has a measuring rod along the Z-axis and a measuring stylus perpendicularly disposed at the end of the measuring rod.

8. The bevel gear CNC machining tool according to claim 1, characterized in that: The bed is equipped with a first drive device and a second drive device. The first drive device is used to drive the first slide to slide along the X-axis, and the second drive device is used to drive the second slide to slide along the Z-axis.

9. The bevel gear CNC machining tool according to claim 1, characterized in that: The second slide is equipped with a third drive device, which is used to drive the third slide to move up and down along the Y-axis.

10. The bevel gear CNC machining tool according to claim 9, characterized in that: The second slide is provided with a slide rail, on which a slide block is slidably mounted. The third slide is mounted on the slide block and connected to the third drive device.

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