Full-automatic small workpiece feeding device suitable for centerless grinding machine

Abstract

The utility model relates to the field of automatic grinding machining of centerless grinding machines, and particularly discloses a full-automatic small workpiece feeding device suitable for a centerless grinding machine, which is suitable for automatic cut-in grinding machining of the centerless grinding machine and comprises a V-shaped feeding bin part, a feeding propelling part, a grinding cutter plate part and a rear positioning material returning part. The stepping motor and the air cylinder are adopted as power to achieve full-automatic feeding, the machining efficiency is improved, and the machining precision is improved; a stepping motor and a sensor are adopted for closed-loop control, so that the precision stability of long-time operation is ensured; the grinding knife board part adopts a structure for clamping the grinding knife board, so that the processing cost of the knife board is reduced, the knife board is easy to replace, the knife boards with different thicknesses can be freely switched, and the interchangeability is stronger; a limiting air cylinder of the rear positioning material returning part adopts a sliding table air cylinder to be matched with a differential adjuster so that fine adjustment of the limiting distance of a material returning plate can be achieved, the grinding position is guaranteed, and axial displacement during grinding machining is avoided. The centerless grinding machine is suitable for the centerless grinding machine to automatically and precisely grind small workpieces with the diameter of 1-5mm and the length of 5-50mm.

Description

Technical Field

[0001] This utility model relates to the field of centerless grinding technology, specifically to a fully automatic small workpiece feeding device suitable for centerless grinding machines. Background Technology

[0002] Currently, centerless grinders play an indispensable role in the precision machining of rotating bodies. With the continuous improvement of industrial automation and the gradual maturation of CNC technology, automatic loading and unloading of products is a basic requirement of automated processing. Under the premise of ensuring processing accuracy and efficiency, it is imperative to improve efficiency and upgrade intelligence through automation. The processing of small parts has also become an important topic in automated processing.

[0003] In view of this, the present invention provides a fully automatic small workpiece feeding device suitable for centerless grinders. Summary of the Invention

[0004] To address the problems mentioned in the background art, this utility model provides a fully automatic small workpiece loading device suitable for centerless grinders. It has the advantage that when short parts with high precision requirements and stepped or conical surfaces are automatically ground by a centerless grinder, the efficiency and accuracy of manual loading are easily limited by the technical level of the machine operator.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A fully automatic small workpiece feeding device suitable for centerless grinders includes a feeding V-shaped hopper, a feeding and pushing section, a grinding blade section, and a rear positioning and unloading section. The feeding V-shaped hopper section allows workpieces to fall into the bottom of the hopper body under gravity. The centerless grinder includes a stepper motor body with a stepper motor guard on its outer side. A coupling is fitted on the outer side of the output end of the stepper motor body, and an indexing disc is located on the outer side of the coupling. A support bearing seat is fixedly mounted on the outer side of the indexing disc, and the bottom end of the support bearing seat is fixedly connected to the top end of the centerless grinder. An indexing sensor is fixedly mounted on the outer side of the centerless grinder, and the other end of the indexing sensor is in contact with the outer side of the indexing disc. Grinding parts are disposed inside the V-shaped hopper body, and a hopper partition is fixedly mounted on the inner wall of the V-shaped hopper body. A rotating material distribution shaft is rotatably mounted on the lower part of the V-shaped hopper body, and a hopper discharge plate is opened at the lower part of the V-shaped hopper body.

[0007] Preferably, the feeding and pushing part includes a front-stage pushing cylinder body and a rear-stage pushing cylinder, and the top of the centerless grinder is provided with a front-stage pushing cylinder guide rail and a rear-stage pushing slide rail.

[0008] Preferably, the grinding blade portion comprises six parts: a grinding blade body, a blade clamping plate, a blade holder base plate, a blade support body, a blade support pressure plate, and a limiting pressure plate. The grinding of the workpiece is performed above the grinding blade body, and the front-stage pusher cylinder body and the rear-stage pusher cylinder push the workpiece into the grinding area of ​​the grinding blade body along the front-stage pusher cylinder guide rail and the rear-stage pusher slide rail, respectively.

[0009] Preferably, the post-positioning ejection section mainly comprises three parts: a limiting cylinder body, an ejection cylinder, and a differential adjuster. The output end of the ejection cylinder is fixedly provided with an ejection slider. An ejection plate is provided on the outer side of the ejection slider. An ejection plate guide block is slidably provided on the outer side of the ejection plate. The limiting cylinder body and the differential adjuster control the ejection plate to achieve grinding position positioning. The ejection cylinder controls the ejection plate to achieve ejection after grinding is completed.

[0010] Preferably, the centerless grinder includes a horizontal adjusting screw and a vertical adjusting screw is provided at the bottom end of the centerless grinder.

[0011] Preferably, a rear-stage pusher slider is slidably provided on the upper outer side of the rear-stage pusher slide rail.

[0012] Preferably, the centerless grinder includes a material feeding trough, a front-stage positioning sensor is fixedly installed on the inner wall of the material feeding trough, a sliding base body is slidably installed on the outer side of the centerless grinder, a sliding base adjusting screw is fixedly installed on the outer side of the sliding base body, and a receiving box is fixedly installed on the outer side of the centerless grinder.

[0013] Preferably, a limiting cylinder bracket is fixedly provided on the outer side of the limiting cylinder body, and the other end of the limiting cylinder bracket is fixedly connected to the outer side of the centerless grinder. A material ejection vertical adjustment seat is provided on the upper part of the centerless grinder.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model uses a stepper motor and cylinder as power to achieve fully automatic feeding, thereby improving processing efficiency and processing accuracy.

[0016] 2. This utility model adopts a closed-loop control of stepper motor and sensor to ensure stable accuracy during long-term operation.

[0017] 3. The grinding blade part of this utility model adopts a structure for clamping the grinding blade, which reduces the processing cost of the blade, makes it easy to replace the blade, and can also achieve arbitrary switching of blades of different thicknesses, making it more interchangeable.

[0018] 4. The limiting cylinder of the rear positioning ejection part of this utility model adopts a sliding table cylinder in conjunction with a differential adjuster to realize the fine adjustment of the ejection plate limiting distance, ensuring the grinding position and avoiding axial displacement during grinding. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the back of this utility model;

[0021] Figure 3 This is a schematic diagram of the front structure of the V-shaped feeding hopper of this utility model;

[0022] Figure 4 This is a top view of the V-shaped feeding hopper of this utility model;

[0023] Figure 5 This is a schematic diagram of the feeding and propulsion part of this utility model;

[0024] Figure 6 This is a schematic diagram of the grinding blade part of this utility model;

[0025] Figure 7 This is a schematic diagram of the rear positioning and material ejection part of this utility model.

[0026] In the diagram: 1. V-shaped feeding hopper; 2. Feeding and pushing section; 3. Grinding blade section; 4. Rear positioning and unloading section; 5. Stepper motor body; 6. Coupling; 7. Induction indexing plate; 8. Support bearing seat; 9. Rotary distributing shaft; 10. Horizontal adjusting screw; 11. V-shaped hopper body; 12. Hopper partition; 13. Indexing sensor; 14. Vertical adjusting screw; 15. Stepper motor cover; 16. Grinding parts; 17. Front-stage pusher cylinder body; 18. Front-stage pusher cylinder guide rail; 19. Hopper discharge plate; 20. Rear-stage pusher cylinder; 21. 21. Rear-stage pusher slide rail; 22. Rear-stage pusher slider; 23. Front-stage position sensor; 24. Drop chute; 25. Sliding base body; 26. Sliding base adjusting screw; 27. Receiving box; 28. Grinding blade body; 29. ​​Blade clamping plate; 30. Blade holder base plate; 31. Blade support body; 32. Blade support pressure plate; 33. Limit cylinder body; 34. Limit pressure plate; 35. Unloading cylinder; 36. Differential adjuster; 37. Unloading slider; 38. Unloading plate guide block; 39. Unloading plate body; 40. Limit cylinder bracket; 41. Unloading vertical adjustment seat. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1 to 7 As shown, this utility model provides a fully automatic small workpiece feeding device suitable for centerless grinders, including a feeding V-shaped hopper section 1, a feeding push section 2, a grinding blade section 3, and a rear positioning and unloading section 4. The feeding V-shaped hopper section 1 uses workpieces falling into the bottom of the hopper under gravity from the V-shaped hopper body 11. The centerless grinder includes a stepper motor body 5, with a stepper motor cover 15 sleeved on the outside of the stepper motor body 5. A coupling 6 is sleeved on the outside of the output end of the stepper motor body 5, and an induction indexing plate 7 is provided on the outside of the coupling 6. A support bearing seat 8 is fixedly provided on the outside of the induction indexing plate 7, and the support shaft... The bottom end of the bearing 8 is fixedly connected to the top end of the centerless grinder. The outer side of the centerless grinder is fixedly provided with an indexing sensor 13, and the other end of the indexing sensor 13 is attached to the outer side of the indexing plate 7. The V-shaped hopper body 11 is provided with grinding parts 16. The inner wall of the V-shaped hopper body 11 is fixedly provided with a hopper partition 12. The lower part of the V-shaped hopper body 11 is rotatably provided with a rotating material distribution shaft 9. The lower part of the V-shaped hopper body 11 is provided with a hopper discharge plate 19. The stepper motor body 5 and the indexing sensor 13 realize closed-loop control, control the rotating material distribution shaft 9 to rotate the grinding parts 16 into the hopper discharge plate 19, and realize material distribution.

[0029] Specifically, the feeding and pushing section 2 includes a front-stage pushing cylinder body 17 and a rear-stage pushing cylinder 20. The top of the centerless grinder is equipped with a front-stage pushing cylinder guide rail 18 and a rear-stage pushing slide rail 21. When the V-shaped hopper body 11 is not discharging material, both the front-stage pushing cylinder body 17 and the rear-stage pushing cylinder 20 are retracted. After the rear-stage pushing cylinder 20 passes the hopper discharge plate 19 and falls into the rear-stage pushing slide rail 21.

[0030] Furthermore, the grinding tool plate section 3 comprises six parts: a grinding tool plate body 28, a tool plate clamping plate 29, a tool holder base plate 30, a tool plate support body 31, a tool plate support pressure plate 32, and a limiting pressure plate 34. The grinding of the workpiece 16 is performed above the grinding tool plate body 28, and the front-stage pusher cylinder body 17 and the rear-stage pusher cylinder 20 push the workpiece 16 into the grinding area of ​​the grinding tool plate body 28 along the front-stage pusher cylinder guide rail 18 and the rear-stage pusher slide rail 21, respectively. The cylinder body 17 extends, pushing the rear-stage pusher slide rail 21 to the front of the grinding cutter body 28. The rear-stage pusher cylinder 20 pushes the grinding part 16 into the grinding area, completing the feeding and pushing process. The workpiece contact surfaces of the grinding cutter body 28 are all welded with cemented carbide to ensure the workpiece is durable after multiple contacts and to improve its service life. The cutter clamping plate 29, which holds the grinding cutter body 28, reduces the cost of cutter processing, makes it easy to replace the cutter, and allows for arbitrary switching between cutter plates of different thicknesses, making it more interchangeable.

[0031] Furthermore, the post-positioning ejection section 4 mainly comprises three parts: a limiting cylinder body 33, an ejection cylinder 35, and a differential adjuster 36. The output end of the ejection cylinder 35 is fixedly equipped with an ejection slider 37. An ejection plate body 39 is provided on the outside of the ejection slider 37. An ejection plate guide block 38 is slidably provided on the outside of the ejection plate body 39. The limiting cylinder body 33 and the differential adjuster 36 control the ejection plate body 39 to achieve grinding position positioning. The ejection cylinder 35 controls the ejection plate body 39 to achieve ejection after grinding. The limiting cylinder body 33 uses a sliding cylinder in conjunction with the differential adjuster 36 to achieve fine adjustment of the ejection plate limiting distance, ensuring the grinding position and avoiding axial displacement during grinding.

[0032] It is worth noting that the centerless grinder includes a horizontal adjusting screw 10 and a vertical adjusting screw 14 at the bottom of the centerless grinder.

[0033] It is worth noting that a rear pusher slider 22 is slidably provided on the upper outer side of the rear pusher slide rail 21.

[0034] It is worth mentioning that the centerless grinder includes a material drop trough 24, a front-stage positioning sensor 23 is fixedly installed on the inner wall of the material drop trough 24, a sliding base body 25 is slidably installed on the outer side of the centerless grinder, a sliding base adjusting screw 26 is fixedly installed on the outer side of the sliding base body 25, and a material receiving box 27 is fixedly installed on the outer side of the centerless grinder for receiving materials.

[0035] It is worth emphasizing that a limit cylinder bracket 40 is fixedly provided on the outer side of the limit cylinder body 33, and the other end of the limit cylinder bracket 40 is fixedly connected to the outer side of the centerless grinder. A material ejection vertical adjustment seat 41 is provided on the upper part of the centerless grinder, and the limit cylinder bracket 40 supports the limit cylinder body 33.

[0036] The stepper motor body 5, the induction indexing plate 7, the indexing sensor 13, the front-stage pusher cylinder body 17, the front-stage pusher cylinder guide rail 18, the rear-stage pusher cylinder 20, the front-stage position sensor 23, the limit cylinder body 33, and the ejection cylinder 35 are existing technologies and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switches, which are not the main technical points of this patent and will not be described in detail. The "front, rear, left, and right" perspectives of this device are... Figure 1 The direction shown in the diagram is the reference.

[0037] Working principle: Step 1, manually place the grinding part 16 into the V-shaped hopper body 11, and limit the grinding part 16 by the hopper partition 12 to ensure that the workpieces are placed neatly.

[0038] Step 2: Start the stepper motor 5 and drive the rotating distribution shaft 9 through the coupling 6 to distribute the material. The single grinding part 16 is dropped into the rear pusher slide rail 21 through the groove of the rotating distribution shaft 9 and the material discharge plate 19. The material distribution in the hopper is completed.

[0039] Step 3: Before the grinding part 16 falls into the rear pusher slide rail 21, both the front pusher cylinder body 17 and the rear pusher cylinder 20 are in the piston rod retracted state; after the grinding part 16 falls into the rear pusher slide rail 21, the front pusher cylinder body 17 pushes out, pushing the grinding part 16 and the rear pusher slide rail 21 into front of the grinding tool plate body 28; the rear pusher cylinder 20 pushes out again, pushing the grinding part 16 above the grinding tool plate body 28, that is, the grinding area of ​​the centerless grinder, and the centerless grinding wheel starts to begin grinding.

[0040] Step 4: After the feeding and pushing are completed, the piston rods of the front-stage pushing cylinder body 17 and the rear-stage pushing cylinder 20 are retracted, ready for the next feeding.

[0041] In step 5, before the rear-stage pusher cylinder 20 pushes the grinding part 16 above the grinding tool plate body 28, the sliding part of the movable portion of the limiting cylinder body 33 is in the area close to the tool plate. After the rear-stage pusher cylinder 20 pushes the grinding part 16 above the grinding tool plate body 28, the ejector plate body 39 restricts the loading position of the grinding part 16. Before the grinding wheel starts, the sliding part of the movable portion of the limiting cylinder body 33 retracts away from the area away from the tool plate. After grinding is completed, the sliding part of the movable portion of the limiting cylinder body 33 first returns to the area close to the tool plate, and then the ejector cylinder 35 quickly pushes out, pushing the grinding part 16 out of the grinding tool plate body 28 and into the discharge chute 24, and then into the receiving box 27 through the discharge chute 24, completing the material collection.

[0042] Step 6: Repeat steps 2 to 5 until all grinding parts 16 are finished.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully automatic small workpiece feeding device suitable for centerless grinders, comprising a feeding V-shaped hopper (1), a feeding and pushing section (2), a grinding blade section (3), and a rear positioning and unloading section (4), characterized in that: The V-shaped hopper section (1) of the feeding machine uses the workpiece falling into the bottom of the hopper body (11) under the action of gravity. The centerless grinder includes a stepper motor body (5), a stepper motor cover (15) is fitted on the outside of the stepper motor body (5), a coupling (6) is fitted on the outside of the output end of the stepper motor body (5), an induction indexing plate (7) is provided on the outside of the coupling (6), and a support bearing seat (8) is fixed on the outside of the induction indexing plate (7), and the bottom end of the support bearing seat (8) is... The centerless grinder is fixedly connected to the top of the centerless grinder. A dividing sensor (13) is fixedly provided on the outer side of the centerless grinder, and the other end of the dividing sensor (13) is attached to the outer side of the dividing plate (7). Grinding parts (16) are provided inside the V-shaped hopper body (11). A hopper partition (12) is fixedly provided on the inner wall of the V-shaped hopper body (11). A rotating material distribution shaft (9) is rotatably provided on the lower part of the V-shaped hopper body (11). A hopper discharge plate (19) is opened on the lower part of the V-shaped hopper body (11).

2. The fully automatic small workpiece feeding device suitable for centerless grinders according to claim 1, characterized in that: The feeding and pushing part (2) includes a front-stage pushing cylinder body (17) and a rear-stage pushing cylinder (20). The top of the centerless grinder is provided with a front-stage pushing cylinder guide rail (18) and a rear-stage pushing slide rail (21).

3. The fully automatic small workpiece feeding device suitable for centerless grinders according to claim 1, characterized in that: The grinding blade part (3) includes six parts: grinding blade body (28), blade clamping plate (29), blade holder base plate (30), blade support body (31), blade support pressure plate (32) and limiting pressure plate (34). The grinding of the grinding part (16) is performed above the grinding blade body (28), and the front-stage pusher cylinder body (17) and the rear-stage pusher cylinder (20) push the grinding part (16) into the grinding area of ​​the grinding blade body (28) along the front-stage pusher cylinder guide rail (18) and the rear-stage pusher slide rail (21), respectively.

4. The fully automatic small workpiece feeding device suitable for centerless grinders according to claim 1, characterized in that: The post-positioning ejection section (4) mainly includes three parts: a limiting cylinder body (33), an ejection cylinder (35), and a differential adjuster (36). The output end of the ejection cylinder (35) is fixedly provided with an ejection slider (37). An ejection plate (39) is provided on the outside of the ejection slider (37). An ejection plate guide block (38) is slidably provided on the outside of the ejection plate (39). The limiting cylinder body (33) and the differential adjuster (36) control the ejection plate (39) to achieve grinding position positioning. The ejection cylinder (35) controls the ejection plate (39) to achieve ejection after grinding.

5. The fully automatic small workpiece feeding device suitable for centerless grinders according to claim 1, characterized in that: The centerless grinder includes a horizontal adjusting screw (10) and a vertical adjusting screw (14) at the bottom end of the centerless grinder.

6. A fully automatic small workpiece feeding device suitable for centerless grinders according to claim 3, characterized in that: The upper outer side of the rear pusher slide rail (21) is provided with a rear pusher slider (22).

7. The fully automatic small workpiece feeding device suitable for centerless grinders according to claim 1, characterized in that: The centerless grinder includes a material drop trough (24), a front-end positioning sensor (23) is fixedly provided on the inner wall of the material drop trough (24), a sliding base body (25) is slidably provided on the outer side of the centerless grinder, a sliding base adjusting screw (26) is fixedly provided on the outer side of the sliding base body (25), and a receiving box (27) is fixedly provided on the outer side of the centerless grinder.

8. A fully automatic small workpiece feeding device suitable for centerless grinders according to claim 4, characterized in that: The outer side of the limiting cylinder body (33) is fixedly provided with a limiting cylinder bracket (40), and the other end of the limiting cylinder bracket (40) is fixedly connected to the outer side of the centerless grinder. The upper part of the centerless grinder is provided with a material ejection vertical adjustment seat (41).

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