Die positioning rod polishing workbench

Abstract

The invention discloses a mold positioning rod polishing workbench, and relates to the field of polishing processing, the mold positioning rod polishing workbench comprises a machine base, a chuck, a workpiece feeding mechanism and a polishing mechanism are arranged on the machine base, a carrying table is connected with a rotating piece used for driving the carrying table to rotate, and two sets of workpiece clamping assemblies are symmetrically installed at the two ends of the carrying table and comprise clamps and first driving pieces; when the two clamps are located on the same side of the carrying table, the clamping axes of the two clamps are aligned, and the other end of the workpiece clamped on one clamp can be clamped by the other clamp, so that the workpiece is switched between the two clamps; by means of the carrying table and the workpiece clamping assembly, the clamping position switching of the same workpiece between the two clamps is achieved, and after one end of the workpiece is polished, the clamps can clamp the other end of the workpiece through switching operation, so that the other end of the workpiece can be polished without manual operation, the machining efficiency is improved, and the machining cost is reduced. And the device is also suitable for small-batch workpiece polishing operation, and the equipment cost and the labor cost are remarkably reduced.

Description

Technical Field

[0001] The present invention relates to polishing processing technology, and particularly to a polishing workbench for a die positioning rod. Background Art

[0002] The positioning rod is a core component for die clamping and guiding. Its surface finish and dimensional accuracy directly affect the assembly accuracy and service life of the die. The traditional polishing operation of the positioning rod relies heavily on manual operation. After polishing one end, manual unloading, flipping, and re-clamping are required to complete the polishing of both ends of the positioning rod. The processing efficiency is low, and manual operation is also prone to clamping errors, affecting the coaxiality of the positioning rod. In the prior art, there are also ways to perform loading and unloading by using automated / semi-automated devices such as robotic arms. However, it is necessary to remove the workpiece and move it to a temporary transfer area, set up a workpiece flipping device to flip the positioning rod, and then re-clamp it, which is not conducive to the continuous processing of the workpiece, and the improvement of processing efficiency is limited. Furthermore, some technologies use double stations to perform operations alternately. However, it still requires setting up an additional flipping mechanism for switching the clamping position of the workpiece. Although the efficiency is improved to some extent, there is still room for improvement due to the limitations of the moving stroke and the flipping operation time. Although some precision multi-axis numerical control polishing devices can ensure both accuracy and efficiency, the equipment cost is high, making it difficult to meet the processing requirements of small batches. Summary of the Invention

[0003] The purpose of the present invention is to provide a polishing workbench for a die positioning rod to solve the above deficiencies in the prior art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A polishing workbench for a die positioning rod, including a machine base, a chuck and a polishing mechanism are arranged on the machine base, and further includes: a carrier table, the carrier table is connected to a rotating member for driving its rotation; Two sets of workpiece clamping components are provided and symmetrically installed at both ends of the carrier table. The workpiece clamping component includes a fixture and a first driving member. The fixture is rotatably connected to the carrier table through a rotating shaft, and the first driving member is used to drive the fixture to rotate around its rotating connection with the carrier table; A third driving member, which is used to drive the workpiece clamping component to move along the direction of the chuck; A workpiece loading mechanism, which is used to convey the positioning rod to the workpiece clamping component; When the two fixtures are on the same side of the carrier table, the clamping axes of the two fixtures are aligned, and the other end of the workpiece clamped on the fixture can be clamped by the other fixture, so that the workpiece can be switched between the two fixtures.

[0005] Further, the carrier table is horizontally placed, and the fixture can rotate 180° clockwise / counterclockwise.

[0006] Furthermore, the carrier is placed vertically, and the fixture can rotate 90° clockwise / counterclockwise.

[0007] Furthermore, the carrier is connected to a second driving member for driving the carrier to move in a vertical direction.

[0008] Furthermore, the rotating member includes a support frame, which is fixedly installed on one side of the mobile platform. A rotating column is fixedly connected to the middle of one side of the platform. The rotating column is rotatably connected to one side of the support frame, and the rotating column is connected to a second motor for driving its rotation.

[0009] Furthermore, the first driving member includes a first motor, which is fixedly installed in the carrier, and one end of the output shaft of the motor is connected to a first transmission wheel, a second transmission wheel is installed on the rotating shaft, and the first transmission wheel and the second transmission wheel are connected by a transmission belt.

[0010] Furthermore, the mold positioning rod polishing workbench also includes a collection box for collecting the processed positioning rods.

[0011] Furthermore, two groups of chucks and polishing mechanisms are provided and are symmetrically distributed, and the workpiece clamping assembly can move between the two chucks.

[0012] Compared with the prior art, the mold positioning rod polishing workbench provided by the present invention has the following beneficial effects: By setting the stage and workpiece clamping assembly, the clamps are aligned with the axis on the same side of the stage, so that the clamping position of the same workpiece can be switched between the two clamps. After polishing one end of the workpiece, the clamp can clamp the other end of the workpiece by switching the operation, so that the other end of the workpiece can be polished without manual operation, which significantly reduces the non-processing time during the operation. It is also applicable to the polishing operation of small batches of workpieces, and the equipment cost and labor cost are significantly reduced. At the same time, the coordinated operation of the workpiece clamping assembly and the carrier provides a variety of processing methods for rod-shaped workpieces in horizontal or vertical installation modes, and is suitable for a variety of polishing machines, which improves the applicability and practicality of the device, and effectively solves the problems of low efficiency and poor consistency of traditional polishing equipment, and provides a reliable solution for efficient and high-precision polishing of mold positioning rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1Front view of the overall structure provided by the embodiment of the present invention; Figure 2 Stereogram of the rotating part and the workpiece clamping assembly provided by the embodiment of the present invention; Figure 3 Provided by the embodiment of the present invention Figure 2 Schematic diagram of the partial structure; Figure 4 Schematic diagram of the positioning rod on the workpiece clamping assembly switching between two jigs provided by the embodiment of the present invention; Figure 5 Schematic diagram of the workpiece clamping assembly clamping different positioning rods provided by the embodiment of the present invention; Figure 6 Schematic diagram of the workpiece clamping assembly alternately processing workpieces provided by the embodiment of the present invention; Figure 7 Schematic diagram when the carrier 5 is placed vertically provided by the embodiment of the present invention; Figure 8 Schematic diagram of the carrier 5 placed vertically and moving in the vertical direction to switch workpieces provided by the embodiment of the present invention; Figure 9 Schematic diagram of the position of the workpiece clamping assembly when the chuck is vertical provided by the embodiment of the present invention; Figure 10 Schematic diagram of one workpiece clamping assembly corresponding to two sets of chucks and polishing mechanisms provided by the embodiment of the present invention.

[0015] Explanation of reference numerals: 1. Machine base; 2. Chuck; 3. Polishing mechanism; 4. Positioning rod; 5. Carrier; 6. Rotating part; 61. Support frame; 62. Rotating column; 63. Limiting seat; 64. Limiting column; 7. Workpiece clamping assembly; 71. Jig; 72. First driving member; 721. First motor; 722. First transmission wheel; 723. Second transmission wheel; 724. Transmission belt; 73. Rotating shaft; 8. Collection box; 9. Third driving member; 91. Moving platform; 92. Threaded rod; 93. Third motor. Detailed implementation manners

[0016] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further introduced in detail below in conjunction with the accompanying drawings.

[0017] Please refer to Figure 1 - Figure 10, a polishing workbench for a die positioning rod, comprising a machine base 1, on which a chuck 2 and a polishing mechanism 3 are arranged. The chuck 2 is used to fix the positioning rod 4 to be processed, and then the polishing mechanism 3 is used to perform grinding and polishing operations on it. The polishing workbench further comprises: A carrier table 5, which is connected to a rotating member 6 for driving its rotation; A workpiece clamping assembly 7, which has two groups and is symmetrically installed at both ends of the carrier table 5. The workpiece clamping assembly 7 comprises a fixture 71 and a first driving member 72. The fixture 71 is rotatably connected to the carrier table 5 through a rotating shaft 73, and the first driving member 72 is used to drive the fixture 71 to rotate around its rotating connection with the carrier table 5; When the two fixtures 71 are on the same side of the carrier table 5, the clamping axes of the two fixtures 71 are aligned, and the other end of the workpiece clamped on the fixture 71 can be clamped by the other fixture 71, so that the workpiece can be switched between the two fixtures 71 (see Figure 4 ); Exemplarily, the carrier table 5 can be fixedly arranged. During use, the chuck 2 moves on the machine base 1 and approaches or moves away from the carrier table 5; or the carrier table 5 can move on the machine base 1, move towards the chuck 2 and approach or move away. During the processing of the positioning rod 4, it can be selected according to the processing environment (whether the polishing wheel can move, whether the chuck 2 can move); In an embodiment of the present invention, taking the carrier table 5 as a moving mode for example, as Figure 1 shown, the carrier table 5 drives the workpiece clamping assembly 7 to approach or move away from the chuck 2 to complete the picking and placing operations of the workpiece to be processed and the processed workpiece, and perform continuous and efficient automated processing on the positioning rod 4. Among them, the carrier table 5 is installed on a moving platform 91, the moving platform 91 is slidably installed on the machine base 1, the moving platform 91 is driven by a threaded rod 92, and the threaded rod 92 is connected to a third motor 93 for driving its rotation. This method is a prior art and will not be specifically described here. When the moving platform 91 moves, it drives the carrier table 5 and the workpiece clamping assembly 7 thereon to move synchronously, thereby driving the clamped workpiece to move.

[0018] In an embodiment of the present invention, the rotating member 6 comprises a support frame 61, the support frame 61 is fixedly installed on one side of the moving platform 91, a rotating column 62 is fixedly connected to the middle of one side of the carrier table 5, the rotating column 62 is rotatably connected to one side of the support frame 61, and the rotating column 62 is connected to a second motor for driving its rotation. The second motor drives the rotating column 62 to rotate, thereby driving the carrier table 5 to rotate; The rotating member 6 also includes a limit seat 63 arranged on the top of the support frame 61, and a limit column 64 installed on the side of the carrier 5 close to the support frame 61. When the carrier 5 rotates, the limit column 64 is driven to rotate synchronously. By setting the limit seat 63 at the corresponding position, the rotation angle of the carrier 5 is limited to 180°, that is, when the angle of the forward and reverse rotation of the carrier 5 reaches 180°, the limit column 64 is blocked by the limit seat 63. The two clamps 71 exchange positions during the reciprocating rotation of the carrier 5, ensuring that the two clamps 71 can accurately align with the chuck 2 after each rotation of the carrier 5, ensuring that the workpiece always remains stable during the processing; Through the cooperation of two sets of symmetrically distributed workpiece clamping components and the rotatable carrier, seamless switching of the workpiece between the fixtures is achieved. The carrier is driven to rotate by the rotating part, and the rigid limit of the limit column and the limit seat is cooperated to ensure that the rotation angle is strictly controlled within ±180°, so that the axes of the two fixtures are completely aligned with the chuck after switching (coaxiality error ≤0.005mm).

[0019] In one embodiment of the present invention, Figure 1 As shown, the first driving member 72 includes a first motor 721, which is fixedly installed in the carrier 5, and one end of the output shaft of the motor is connected to the first transmission wheel 722, and the second transmission wheel 723 is installed on the rotating shaft 73. The first transmission wheel 722 and the second transmission wheel 723 are connected through a transmission belt 724, and the rotation of the rotating shaft 73 is driven to drive the clamp 71 to rotate; it should be noted that it can also be driven by other methods in the prior art, such as directly connecting the first motor 721 to the rotating shaft 73, and directly driving the rotating shaft 73 to rotate by the first motor 721.

[0020] In one embodiment of the present invention, the carrier 5 is placed horizontally, and the fixture 71 can rotate 180° clockwise / counterclockwise. The processing scenario of the workpiece is specifically described below; The implementation scenario when the workpieces (positioning rods 4) are processed one by one (the two ends of the workpiece are processed continuously before the next workpiece is processed), specifically: The workpiece to be processed is transported to the chuck 2 for clamping by the workpiece clamping assembly 7, and then one end of the workpiece is polished. After polishing, the workpiece is unloaded by the workpiece clamping assembly 7. During unloading, one of the clamps 71 clamps the polished end of the workpiece. Figure 4 and Figure 5 As shown, the clamp 71 is along Figure 4 The direction indicated by the arrow in a is rotated 180°. Figure 4 As shown in b, the unpolished end of the workpiece is clamped by another clamp 71. The clamp 71 on the left side of the figure is released, and the clamp 71 on the right side is rotated 180°, presenting as shown in FIG. Figure 4 c, and then the stage 5 rotates 180 degrees along the rotation direction in the figure to present the state shown in FIG.Figure 4 In the state shown in d, the two clamps 71 have switched positions. As the workpiece clamping assembly 7 transports it to the chuck 2 for clamping again, the unpolished end of the workpiece will be suspended in the external area of ​​the chuck 2, and will be polished by the polishing mechanism 3 to complete the polishing operation at both ends of the workpiece. It should be noted that if the entire workpiece needs to be polished, the length of the workpiece clamped by the chuck 2 should be less than half the length of the workpiece.

[0021] In some optional embodiments, when all the processing of a workpiece is completed, a new workpiece to be processed can be loaded onto the workpiece clamping assembly 7 in a timely manner, such as Figure 5 As shown in FIG. 1 (the hatched area on the workpiece indicates that it has been ground and polished), during the processing of the last end of the workpiece, the new workpiece is clamped by the fixture 71 away from the chuck 2 ( Figure 5 a), then the workpiece clamping assembly 7 moves toward the chuck 2 to clamp and unload the processed workpiece. At this time, both clamps 71 hold the workpiece ( Figure 5 In b, the left clamp 71 holds the processed workpiece, and the right clamp 71 holds the new workpiece). After both clamps 71 are rotated 180° ( Figure 5 c), the stage 5 switches the positions of the two clamps 71 by rotating ( Figure 5 d) Finally, a new workpiece is loaded into the chuck 2, and the processed workpiece is removed. It is worth mentioning that Figure 5 b and Figure 5 The movement sequence of c can be exchanged, specifically on the premise that the two workpieces will not interfere with each other, and the specific movement sequence can be adjusted according to the implementation method.

[0022] Through the workpiece clamping assembly, after polishing one end of the workpiece is completed, the fixture drives the shaft to rotate 180° through the first driving member, and automatically sends the unprocessed end of the workpiece to another fixture for clamping, so that the next process can be entered without stopping, and the processing efficiency is effectively improved. The coordination of the rotating part and the mobile platform provides a structural basis for the integration of automatic feeding mechanisms (such as manipulators), supporting subsequent upgrades to fully automated production lines.

[0023] Implementation scenario for alternate processing of workpieces (processing one end of a workpiece before processing the next end of the workpiece): like Figure 6 As shown, during the processing of a workpiece (the previous one), a new workpiece (the next one) is promptly loaded on the workpiece clamping assembly 7, as shown in FIG. Figure 6 a. After the grinding and polishing of one end of the previous workpiece is completed, the workpiece clamping assembly 7 removes the previous workpiece and loads the next workpiece into the chuck 2 for processing ( Figure 6 b and Figure 6 c), and then the workpiece clamping assembly 7 performs the clamping end switching of the previous workpiece (Figure 6 d), keep the end of the previous workpiece that has been polished in a state to be clamped. After the latter workpiece is polished at one end and removed from the chuck 2, send the unpolished end of the previous workpiece into the chuck 2 for continuous processing. Repeat this process for alternating processing. Figure 5 and Figure 6 In, the workpiece with a solid-line edge is the previous workpiece, and the one with a dashed-line edge is the latter workpiece. The shaded area represents the polished end. It should be noted that Figure 6 In a), after the latter workpiece is clamped, the operation of rotating downward can be performed, so that after the stage 5 rotates, the two workpieces directly exchange positions, avoiding unnecessary waiting time.

[0024] It should be understood that for the scenario where only one end of the workpiece needs to be processed, the workpiece clamping component 7 provided in this embodiment can also perform an automated loading and unloading process. Specifically, reference can be continued to Figure 6 , after the previous workpiece is processed ( Figure 6 a), remove it from the chuck 2, and rotate the next workpiece to the docking position of the chuck 2 through the rotation of the stage 5 ( Figure 6 c). The previous workpiece can be directly unloaded. Repeat this process to continuously process the workpiece that only needs to be processed at one end, thereby improving production efficiency, simplifying the operation process, improving processing accuracy and consistency, reducing labor costs, and optimizing the overall operation efficiency of the production line.

[0025] In an embodiment of the present invention, another setting method of the stage 5 is provided. As shown in 7, the stage 5 can also be vertically placed. At this time, the fixture 71 can rotate 90° clockwise / counterclockwise. The specific implementation scenario is basically the same as the above-mentioned scenario, except that the rotation angle of the fixture 71 on the stage 5 is smaller, and the time required for switching the workpiece clamping position is less. After one end of the workpiece is polished, the workpiece clamping component 7 removes the workpiece from the chuck 2 ( Figure 7 a), and then performs a clamping position switch ( Figure 7 b and Figure 7 c). Finally, the stage 5 rotates 180° to make the workpiece in the axial position of the chuck 2 ( Figure 7 d). After the chuck 2 clamps, the other end of the workpiece is processed. It should be noted that Figure 7 The position shown in is the docking position of the lower fixture 71 and the chuck 2. In some other embodiments, it can also be the upper fixture 71 and the chuck 2 in the docking position, which can be specifically selected according to the processing environment of the workbench (such as space size or workpiece posture in the front and back processes, etc.); It is worth mentioning that as Figure 9As shown, some chucks 2 may be vertical, and the workpiece clamping provided in this application is equally applicable. The specific implementation scenarios are basically the same as those described above, and will not be specifically elaborated here; In this embodiment (variant example), the carrier 5 can also be connected to a second driving member for driving it to move in the vertical direction, thereby eliminating the setting of the rotating member 6. As Figure 8 shown, after the workpiece exchanges the clamping position on the workpiece clamping assembly 7, the carrier 5 can be driven to move by the second driving member ( Figure 8 b), so that the two jigs 71 can move to positions opposite to the clamping axis of the chuck 2 ( Figure 8 c). This method can simplify the moving steps and avoid the influence of centrifugal force on the clamping stability when the workpiece rotates. However, its disadvantage is that a certain longitudinal moving space is required, and it is generally applicable to a polishing workbench where there is a certain height difference between the chuck 2 and the machine base 1. The second driving member is a general linear driving mechanism, which is installed on the moving platform 91 and used to drive the carrier 5 to move in the vertical direction.

[0026] In an embodiment of the present invention, as Figure 10 shown, one workpiece clamping assembly 7 can correspond to two groups of chucks 2 and polishing mechanisms 3. In some cases where the workpiece grinding and polishing time is relatively long, one workpiece clamping assembly 7 can move between the two chucks 2 during the processing gap to improve the processing efficiency. Specifically, there are two groups of chucks 2 and polishing mechanisms 3, and they are symmetrically distributed. The workpiece clamping assembly 7 can move between the two chucks 2. The workpiece clamping assembly 7 is connected to a third driving member 9 for driving it to move along the arrangement direction of the chucks 2. In this embodiment, the third driving member 9 can adopt the aforementioned moving platform 91, third motor 93, and threaded rod 92, and will not be specifically elaborated here; For the way that the carrier 5 is vertically placed, it can also be implemented by setting multiple groups of chucks 2. The method is similar to the above. The multiple groups of chucks 2 can be linearly arranged or annularly arranged. The workpiece clamping assembly 7 provided in this application can be adaptively set according to the existing number and arrangement of the chucks 2. The number of the workpiece clamping assemblies 7 can also be selected and is not limited in the invention; In an embodiment of the present invention, taking the carrier 5 being horizontally placed as an example, a collection box 8 can also be provided for collecting the processed positioning rods 4. As Figure 1 shown, the collection box 8 can move on the machine base 1. When the processed workpiece is transferred to one side of the collection box 8, it can directly fall into the collection box 8.

[0027] In an embodiment of the present invention, the mold positioning rod 4 polishing workbench further includes a workpiece loading mechanism for placing the positioning rod 4 to be processed at the fixture 71 for clamping and loading. The workpiece loading mechanism is a general manipulator, or the workpiece can also be directly loaded manually. When loading manually, only the new workpiece to be processed needs to be placed on the fixture 71 for clamping.

[0028] In an embodiment of the present invention, the two fixtures 71 can also be set to be movable. Specifically, the two fixtures can be slidably mounted on the stage 5 and can approach or move away from each other (driven by a bidirectional lead screw or a bidirectional threaded rod), so as to clamp positioning rods 4 of different lengths. Moreover, by adjusting the clamping position of the workpiece, single-end or double-end polishing operations are also supported, meeting diverse processing requirements.

[0029] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the protection scope of the present invention.

Claims

1. A mold positioning rod polishing workbench, comprising a machine base (1), on which a chuck (2) and a polishing mechanism (3) are arranged, characterized in that: A carrier (5), the carrier (5) being connected to a rotating member (6) for driving the carrier (5) to rotate; A workpiece clamping assembly (7) is provided with two groups and is symmetrically mounted at both ends of the carrier (5). The workpiece clamping assembly (7) comprises a clamp (71) and a first driving member (72). The clamp (71) is rotationally connected to the carrier (5) via a rotating shaft (73). The first driving member (72) is used to drive the clamp (71) to rotate around a rotation connection between the clamp and the carrier (5). A third driving member (9) for driving the workpiece clamping assembly (7) to move along a setting direction of the chuck (2); A workpiece feeding mechanism, used for conveying the positioning rod (4) to the workpiece clamping assembly (7); When the two clamps (71) are located on the same side of the carrier (5), the clamping axes of the two clamps (71) are aligned, and the other end of the workpiece clamped on the clamp (71) can be clamped by another clamp (71), so that the workpiece can be switched between the two clamps (71).

2. A mold positioning rod polishing workbench according to claim 1, characterized in that: The carrier (5) is placed horizontally, and the clamp (71) can rotate 180° clockwise / counterclockwise.

3. A mold positioning rod polishing workbench according to claim 1, characterized in that: The carrier (5) is placed vertically, and the clamp (71) can rotate 90° clockwise / counterclockwise.

4. A mold positioning rod polishing workbench according to claim 3, characterized in that: The carrier (5) is connected to a second driving member for driving the carrier (5) to move in a vertical direction.

5. The mold positioning rod polishing workbench according to claim 1, characterized in that: The rotating member (6) comprises a support frame (61), the support frame (61) being fixedly mounted on one side of the mobile platform (91), a rotating column (62) being fixedly connected to the middle of one side of the carrier (5), the rotating column (62) being rotatably connected to one side of the support frame (61), and the rotating column (62) being connected to a second motor for driving the rotating column (62) to rotate.

6. The mold positioning rod polishing workbench according to claim 1, characterized in that: The first driving member (72) comprises a first motor (721), the first motor (721) is fixedly mounted in the carrier (5), one end of the output shaft of the motor is connected to a first transmission wheel (722), a second transmission wheel (723) is mounted on the rotating shaft (73), and the first transmission wheel (722) and the second transmission wheel (723) are connected in transmission via a transmission belt (724).

7. The mold positioning rod polishing workbench according to claim 1, characterized in that: It also includes a collection box (8) for collecting the processed positioning rods (4).

8. A mold positioning rod polishing workbench according to claim 2 or 3, characterized in that: Two groups of chucks (2) and polishing mechanisms (3) are provided and are symmetrically distributed, and the workpiece clamping assembly (7) is capable of moving between the two chucks (2).

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