Automatic feeding and tooth aligning tool of gear shaving machine

Abstract

The utility model relates to a piece gear feeding tool, in particular to an automatic feeding and tooth aligning tool of a gear shaving machine, and solves the problems that when a cutter of the gear shaving machine moves downwards for machining, if tooth aligning meshing is not realized, the cutter is easily ejected, and the cutter and a workpiece are damaged if the automatic feeding mechanism of the existing gear shaving machine is used. One end of the body is hinged to one end of the connecting plate, the spring reset structure is arranged at the other end of the body, when a cutter of the gear shaving machine is aligned downwards and abuts against a gear to be machined, the spring can be compressed, force applied to the gear to be machined by the cutter is elastically buffered, and the condition that the cutter is damaged due to hard contact between the cutter and the gear to be machined is prevented. When the tooth aligning sensor detects the compression state of the spring, a signal can be sent to a control module of the gear shaving machine, and the control module controls the cutter to be lifted upwards, rotates the cutter by a certain angle and then continues to be aligned with the gear to be machined downwards till tooth aligning meshing is successful.

Description

Technical Field

[0001] This utility model relates to a feeding fixture, specifically an automatic feeding and tooth alignment fixture for a tooth shaving machine. Background Technology

[0002] To meet the needs of factory automation upgrades, it is generally necessary to upgrade and modify the machine tools on the automated production line. When upgrading machine tools such as gear shaving machines, the main focus is on their feeding mechanism, requiring that the feeding mechanism can automatically move forward, backward, and engage its teeth after the modification.

[0003] However, the following problems exist during the current transformation: First, the center of gravity of the feeding mechanism is suspended in the air, and the relative position of the workpiece cannot be guaranteed to be accurate when the robot places the workpiece, which is prone to tilting. Once tilting occurs, the detection signal of the tooth sensor will be unstable, affecting subsequent processing. Second, the feeding mechanism is an auxiliary tooling, and different material trays need to be changed when processing different products. However, the existing material trays are complicated to disassemble and assemble, and replacement is time-consuming and labor-intensive.

[0004] Chinese utility model patent CN210387831U discloses an automatic feeding mechanism for a gear shaving machine, including a gear shaving machine worktable; a linear guide rail is horizontally mounted on the worktable, and a hydraulic cylinder is horizontally mounted on the worktable via a hydraulic cylinder mounting bracket; the movable end of the hydraulic cylinder is connected to a tooling fixing platform that slides along the linear guide rail; a contoured support bowl for placing the workpiece is fixed at the end of the tooling fixing platform away from the hydraulic cylinder body, and a spring spindle facing the opposite side to the contoured support bowl is horizontally mounted on the end of the tooling fixing platform near the hydraulic cylinder body via a first bracket; a buffer spring opposite to the spring spindle is also included, mounted via a second bracket. This mechanism solves the problems of the center of gravity being suspended and the time-consuming and laborious process of changing the feed tray. However, after the automatic feeding mechanism feeds the gear to be processed into the gear shaving machine, if the cutting tool of the gear shaving machine is not aligned with the tooth groove position of the gear to be processed during downward processing, i.e., no tooth engagement is achieved, it will collide with the tooth tip, causing the tool to push back and damaging both the tool and the workpiece. Utility Model Content

[0005] The purpose of this invention is to provide an automatic feeding and tooth alignment tooling for a shaving machine, which addresses the technical problem that if the automatic feeding mechanism of the existing gear shaving machine fails to achieve tooth meshing during the downward processing of the cutting tool, it is prone to tool ejection and damage to the cutting tool and the workpiece.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An automatic feeding and tooth alignment fixture for a tooth shaving machine is characterized by including a mounting base plate, a body, a connecting plate, a guide rail, a spring return structure, a pushing device, and a tooth alignment sensor.

[0008] The mounting base plate is used for mounting on the shaving machine;

[0009] The guide rail is set on the upper surface of the mounting base plate along the length of the mounting base plate;

[0010] The connecting plate slides with the guide rail, the main body is located above the connecting plate, the pushing device is mounted on the mounting base plate, and the connecting plate is connected to the movable end of the pushing device. The movement direction of the movable end is consistent with the extension direction of the guide rail.

[0011] One end of the main body is hinged to one end of the connecting plate, the spring reset structure is disposed at the other end of the main body, and there is a gap between the other end of the main body and the connecting plate;

[0012] The main body is used to mount and clamp the gear to be processed;

[0013] The spring reset structure includes a fixing plate, a screw, and a spring. The fixing plate is installed at the end of the main body. A first through hole is opened on the fixing plate in the vertical direction. The screw is located in the first through hole, and the bottom end of the screw is threaded to the connecting plate. A nut is screwed on the top end. The lower surface of the nut abuts against the upper surface of the fixing plate. The spring is sleeved on the screw, and the two ends of the spring abut against the fixing plate and the connecting plate, respectively.

[0014] The active end of the tooth sensor corresponds to the spring, and its output end is connected to the control module of the tooth shaving machine to detect changes in the compression state of the spring.

[0015] Furthermore, the mounting base plate has four strip-shaped holes along its length direction, which are symmetrically distributed on both sides of the guide rail. The length direction of the strip-shaped holes is consistent with the length direction of the mounting base plate. The mounting base plate is installed on the gear shaving machine by bolts passing through the strip-shaped holes.

[0016] Furthermore, the top of the body is provided with an axially penetrating arc-shaped groove, which is used to install the gear to be processed;

[0017] A limiting plate is provided on one side of the arc-shaped groove along the axial direction, and a clamping plate is installed on the outer wall of the main body located on the other side of the arc-shaped groove along the axial direction. The clamping plate and the limiting plate cooperate to clamp the gear to be processed and limit the gear to be processed axially.

[0018] Furthermore, a hinge seat is provided at one end of the connecting plate, and a hinge hole is provided on the hinge seat along the extension direction perpendicular to the guide rail. A second through hole is provided at one end of the body corresponding to the hinge hole. One end of the body and one end of the connecting plate are hinged together through the hinge shaft passing through the hinge hole and the second through hole.

[0019] Furthermore, the pushing device is a hydraulic cylinder or a pneumatic cylinder.

[0020] Furthermore, there are two screws, two springs, and two first through holes on the fixing plate, with the line connecting the centers of the two first through holes perpendicular to the extension direction of the guide rail, and the two screws located in the two first through holes respectively.

[0021] Furthermore, the connecting plate is slidably engaged with the guide rail via a slider.

[0022] Furthermore, a mounting bracket is provided on the mounting base plate, the mounting bracket is located at one end of the guide rail, the pushing device is mounted on the mounting base plate through the mounting bracket, a docking plate is provided at one end of the connecting plate, and the movable end of the pushing device is connected to the docking plate through a universal joint.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] (1) The automatic feeding and gear-aligning fixture for a gear shaving machine provided by this utility model has a sliding fit between the guide rail and the connecting plate, and the movable end of the pushing device is connected to the connecting plate, realizing the automation of robot loading and unloading. One end of the main body is hinged to one end of the connecting plate, and a spring reset structure is set at the other end of the main body. When the cutting tool of the gear shaving machine is aligned downwards, it will engage with the gear to be processed. Because there is a gap between the other end of the main body and the connecting plate, the spring will be compressed, which will elastically buffer the force applied by the cutting tool to the gear to be processed, preventing hard contact between the two and damage to the cutting tool and the workpiece. When the gear-aligning sensor detects the change in the compression state of the spring, it will send a signal to the control module of the gear shaving machine. The processing program written in the control module will control the cutting tool to lift up and rotate the cutting tool at a certain angle before continuing to align with the gear to be processed downwards until the gear meshing is successful and the machine tool can process normally.

[0025] (2) The automatic feeding and tooth-aligning fixture for a gear shaving machine provided by this utility model has a strip hole set along its length on the mounting base plate, and the length direction of the strip hole is consistent with the length direction of the mounting base plate. The position can be adjusted back and forth to adapt to the processing of gear products of different sizes.

[0026] (3) The automatic feeding and gear-setting fixture for a gear shaving machine provided by this utility model has an arc-shaped groove on the top of its main body. A limiting plate is provided on one side of the arc-shaped groove along the axial direction. A clamping plate is installed on the outer wall of the main body located on the other side of the arc-shaped groove along the axial direction. The clamping plate and the limiting plate cooperate to clamp the gear to be processed and limit the gear to be processed axially. The structure is simple and the processing is convenient. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of an automatic feeding and tooth-aligning fixture for a tooth shaving machine according to the present invention (the tooth-aligning sensor and clamping plate are not shown);

[0028] The annotations in the attached figures are explained as follows:

[0029] 1-Mounting base plate, 2-Body, 3-Connecting plate, 31-Hinge seat, 32-Matching plate; 4-Guide rail, 5-Fixing plate, 6-Screw, 7-Spring, 8-Mounting bracket, 9-Pushing device. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figure 1 The present invention relates to an automatic feeding and gear-aligning fixture for a gear shaving machine, comprising a mounting base plate 1. A guide rail 4 is provided on the upper surface of the mounting base plate 1 along its length direction. The mounting base plate 1 has four strip-shaped holes along its length direction, which are symmetrically distributed on both sides of the guide rail 4. The length direction of the strip-shaped holes is consistent with the length direction of the mounting base plate 1. The mounting base plate 1 is mounted on the gear shaving machine by bolts passing through the strip-shaped holes. In this way, the position of the mounting base plate 1 can be adjusted using the strip-shaped holes to adapt to the processing requirements of different gear products.

[0032] The connecting plate 3 slides with the guide rail 4 via a slider. A hinge seat 31 is provided at one end of the connecting plate 3. A hinge hole is provided on the hinge seat 31 along the extension direction perpendicular to the guide rail 4. The body 2 is located above the connecting plate 3. A second through hole is provided at one end of the body 2 corresponding to the hinge hole. One end of the body 2 and one end of the connecting plate 3 are hinged together by a hinge shaft passing through the hinge hole and the second through hole. There is a gap between the other end of the body 2 and the connecting plate 3.

[0033] At the other end of the main body 2, a spring reset structure is provided. The spring reset structure includes a fixing plate 5, which is installed at the end of the main body 2. A first through hole is provided on the fixing plate 5 in the vertical direction. In this embodiment, there are two first through holes, and the line connecting the centers of the two first through holes is perpendicular to the extension direction of the guide rail 4. Two screws 6 are respectively provided in the two first through holes. The bottom end of each screw 6 is threaded to the connecting plate 3, and a nut is screwed on the top end. The lower surface of the nut abuts against the upper surface of the fixing plate 5. A spring 7 is sleeved on each of the two screws 6, and the two ends of the spring 7 abut against the fixing plate 5 and the connecting plate 3 respectively.

[0034] The main body 2 is used to install and clamp the gear to be processed. An axially penetrating arc-shaped groove is provided on the top of the main body 2. The arc-shaped groove can be used to install the gear to be processed. A limiting plate is provided on one side of the arc-shaped groove along the axial direction. A clamping plate is installed on the outer wall of the main body 2 located on the other side of the arc-shaped groove along the axial direction. The clamping plate and the limiting plate cooperate to clamp the gear to be processed and limit the gear to be processed axially. The structure is simple and the operation is convenient.

[0035] A mounting bracket 8 is provided on the mounting base plate 1, located at one end of the guide rail 4. A pushing device 9 is provided on the mounting bracket 8 for automatic loading and unloading. The pushing device 9 can be a hydraulic cylinder or a pneumatic cylinder. The movable end of the pushing device 9 is connected to the connecting plate 3. For ease of connection, in this embodiment, a docking plate 32 is provided at one end of the connecting plate 3. The movable end of the pushing device 9 is connected to the docking plate 32 through a universal joint. The direction of movement of the movable end is consistent with the extension direction of the guide rail 4.

[0036] In order to detect whether the teeth are meshed during the shaving process, a tooth meshing sensor is also provided. The active end of the tooth meshing sensor corresponds to the spring 7, and its output end is connected to the control module of the shaving machine to detect the change in the compression state of the feedback spring 7.

[0037] During loading, the robot first places the gear to be processed in the arc-shaped groove of the main body 2, and then sends a processing start command to the machine tool. The pushing device 9 is activated, pushing the gear to be processed installed on the main body 2 along the guide rail 4 to the processing position. Then the cutting tool of the shaving machine moves down and approaches the gear to be processed. If the cutting tool does not align with the tooth groove of the gear to be processed and contacts the tooth tip, the spring force of the spring 7 will buffer the pressure applied by the cutting tool to the gear to be processed due to the existence of the spring reset structure, preventing the two from making hard contact and causing damage to the cutting tool. At this time, the spring 7 will be compressed. After the tooth sensor detects the compressed state of the spring 7, it sends a signal to the control module of the shaving machine. The processing program of the control module controls the cutting tool to lift up and rotate the cutting tool at a certain angle before continuing to move down to align with the gear to be processed until the teeth are successfully meshed and then normal processing is performed.

[0038] The embodiments described above are merely descriptions of specific implementations of this utility model and are not intended to limit the scope of this utility model. Various modifications and improvements made to the technical solutions of this utility model by those skilled in the art without departing from the spirit of this utility model should fall within the protection scope defined by the claims of this utility model.

Claims

1. A gear shaving machine automatic feeding and aligning tooling, characterized in that: The installation base plate (1), the body (2), the connecting plate (3), the guide rail (4), the spring reset structure, the pushing device (9) and the gear matching sensor are included. The installation base plate (1) is used for being installed on a gear shaving machine. The guide rail (4) is arranged on the upper surface of the installation base plate (1) along the length direction of the installation base plate (1). The connecting plate (3) is in sliding fit with the guide rail (4), the body (2) is located above the connecting plate (3), the pushing device (9) is arranged on the installation base plate (1), and the connecting plate (3) is connected with the movable end of the pushing device (9), and the movement direction of the movable end is consistent with the extension direction of the guide rail (4). One end of the body (2) is hinged with one end of the connecting plate (3), the spring reset structure is arranged at the other end of the body (2), and a spacing is arranged between the other end of the body (2) and the connecting plate (3). The body (2) is used for installing and clamping a gear to be processed. The spring reset structure includes a fixed plate (5), a screw rod (6) and a spring (7), the fixed plate (5) is installed at the end of the body (2), a first through hole is formed in the fixed plate (5) along the vertical direction, the screw rod (6) is located in the first through hole, the bottom end of the screw rod (6) is threadedly connected with the connecting plate (3), the top end of the screw rod (6) is rotatably connected with a nut, the lower surface of the nut is abutted with the upper surface of the fixed plate (5), and the spring (7) is sleeved on the screw rod (6) and the two ends of the spring (7) are respectively abutted with the fixed plate (5) and the connecting plate (3). The active end of the gear matching sensor corresponds to the spring (7), the output end of the gear matching sensor is connected with the control module of the gear shaving machine, and the gear matching sensor is used for detecting the compression state change of the spring (7).

2. The shaving machine automatic feeding and aligning tooling according to claim 1, characterized in that: A strip-shaped hole is formed in the installation base plate (1) along the length direction of the installation base plate (1), the strip-shaped hole is four and is symmetrically arranged on both sides of the guide rail (4), the length direction of the strip-shaped hole is consistent with the length direction of the installation base plate (1), and the installation base plate (1) is installed on the gear shaving machine through the strip-shaped hole by a bolt.

3. The shaving machine automatic feeding and aligning tooling according to claim 2, characterized in that: An axial through arc-shaped groove is formed in the top of the body (2), and the arc-shaped groove is used for installing the gear to be processed. A limiting plate is arranged on one side of the arc-shaped groove along the axial direction, a clamping plate is installed on the outer wall of the body (2) on the other side of the arc-shaped groove along the axial direction, and the clamping plate is used for clamping the gear to be processed in cooperation with the limiting plate.

4. The shaving machine automatic feeding and aligning tooling according to claim 3, characterized in that: One end of the connecting plate (3) is provided with a hinge seat (31), a hinge hole is formed in the hinge seat (31) along the direction perpendicular to the extension direction of the guide rail (4), one end of the body (2) is provided with a second through hole corresponding to the hinge hole, and one end of the body (2) is hinged with one end of the connecting plate (3) through a hinge shaft penetrating the hinge hole and the second through hole.

5. The shaving machine automatic feeding and aligning tooling of claim 4, wherein: The pushing device (9) is an oil cylinder or an air cylinder.

6. The gear shaving machine automatic feed and indexing tooling of claim 1, wherein: Two screw rods (6) and two springs (7) are arranged, two first through holes are formed in the fixed plate (5), and the center line of the two first through holes is perpendicular to the extension direction of the guide rail (4).

7. The gear shaving machine automatic feed and indexing tooling of claim 1 wherein: The connecting plate (3) is in sliding fit with the guide rail (4) through a sliding block.

8. The gear shaving machine automatic feed and indexing tooling of claim 1, wherein: The mounting base plate (1) is provided with a mounting rack (8) at one end of the guide rail (4), the pushing device (9) is arranged on the mounting base plate (1) through the mounting rack (8), and a butt plate (32) is arranged at one end of the connecting plate (3), and the movable end of the pushing device (9) is connected with the butt plate (32) through a universal joint.

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