Jig for surface grinding machine and surface grinding machine

Abstract

The jig comprises an extension rod and a grinding wheel assembly, the extension rod is arranged in the direction parallel to a main shaft of the surface grinding machine and connected with the main shaft, and the extension rod is provided with a near end connected with the main shaft and a far end far away from the main shaft. The cross section of the extension rod is gradually reduced from the near end to the far end; the grinding wheel assembly comprises a grinding wheel, the grinding wheel is arranged on the extension rod in a sleeving mode and arranged close to the far end, and the grinding wheel can synchronously pivot around the extension rod relative to the main shaft. The utility model solves the problems that the diameter of the grinding surface on the periphery of the grinding wheel is larger due to the limitation of the minimum diameter of the mounting hole matched with the grinding wheel in the surface grinding machine in the prior art, and the processing requirement of a fine precision punch is difficult to meet.

Description

Technical Field

[0001] The utility model relates to the field of surface grinder manufacturing, in particular to a fixture for a surface grinder and a surface grinder. Background Art

[0002] With the rapid development of die manufacturing technology, the design of die structures is becoming increasingly complex and precise. Especially in the field of precision die manufacturing, higher requirements are put forward for the machining accuracy and surface quality of die parts. As one of the key components in the die, the dimensional accuracy and geometric tolerance of the punch directly affect the overall performance of the die and the quality of the finished product. However, in the existing die machining process, due to the limitation of the minimum diameter of the mounting hole for the adapted grinding wheel in the general surface grinder (usually about Φ80mm), the size of the grinding wheel itself is restricted, so it is difficult to meet the machining requirements for small and precise punches.

[0003] Specifically, when using a traditional grinding wheel for machining, due to the large diameter of the grinding wheel mounting hole, the diameter of the grinding surface located on the outer periphery of the grinding wheel is large, and the R angle of the machined part often reaches 40mm or more. This not only increases the difficulty of die assembly, but also easily causes uneven force on the punch due to insufficient guidance during assembly and use, thus leading to failure problems such as punch breakage. In addition, the large R angle also restricts the improvement of die accuracy and the extension of die life, and it is difficult to meet the development trend of high-precision and high-life dies.

[0004] Therefore, there is an urgent need for an innovative technical solution that can solve the many problems faced by the existing general surface grinder in machining small-diameter punches, improve die machining accuracy, ensure the stability and service life of the punch, and meet the urgent needs of the die industry for precision and high-efficiency machining technologies. The proposal of the utility model is a beneficial exploration and practice aiming at this technical problem. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a fixture for a surface grinder and a surface grinder, so as to solve the problem in the prior art that due to the limitation of the minimum diameter of the mounting hole for the adapted grinding wheel in the surface grinder, the diameter of the grinding surface on the outer periphery of the grinding wheel is large, and it is difficult to meet the machining requirements for small and precise punches.

[0006] To achieve the above object of the utility model, an embodiment of the utility model provides a fixture for a surface grinder, which includes:

[0007] An extension rod is arranged along the direction parallel to the main shaft of the surface grinder and is connected to the main shaft. The extension rod has a proximal end connected to the main shaft and a distal end away from the main shaft, and the cross-section of the extension rod gradually becomes smaller from the proximal end to the distal end;

[0008] A grinding wheel assembly, the grinding wheel assembly includes a grinding wheel, the grinding wheel is sleeved on an extension rod and is arranged close to the distal end, and the grinding wheel can pivot synchronously around the extension rod relative to the main shaft.

[0009] As a further improvement of an embodiment of the present invention, wherein, the proximal end is sleeved on the main shaft and has a tapered inner side wall that fits the main shaft.

[0010] As a further improvement of an embodiment of the present invention, wherein, the grinding wheel assembly includes a first flange and a second flange that are oppositely arranged and connected to each other, the first flange and the second flange are sleeved on the extension rod and at least one of them is fixedly connected to the extension rod, and the grinding wheel is arranged between the first flange and the second flange and remains stationary relative to the first flange and the second flange during the pivoting movement.

[0011] As a further improvement of an embodiment of the present invention, wherein, the fixture further includes at least three arc-shaped balance blocks, and the at least three arc-shaped balance blocks are arranged on one of the first flange and the second flange that is far from the main shaft and at least used to make the grinding wheel assembly achieve dynamic balance.

[0012] As a further improvement of an embodiment of the present invention, wherein, the at least three arc-shaped balance blocks are located on the circumference of the same circle and are evenly spaced along the circumference of the circle.

[0013] As a further improvement of an embodiment of the present invention, wherein, the circle where the at least three arc-shaped balance blocks are located, the second flange, the grinding wheel and the first flange are coaxially arranged.

[0014] As a further improvement of an embodiment of the present invention, wherein, one of the first flange and the second flange includes a flange body and a connecting portion extending from the axis direction of the flange body towards the other, an external thread is provided on the outer side wall of the connecting portion, and an internal threaded hole is provided on the other flange from its axis, and the connecting portion passes through the internal threaded hole.

[0015] As a further improvement of an embodiment of the present invention, wherein, the fixture further includes a connecting member, the connecting member passes through the extension rod and is connected to the main shaft, a first flange is provided on the side wall of the connecting member along the circumferential direction, a second flange is provided on the side wall of the extension rod along the circumferential direction, the first flange, the grinding wheel and the second flange are located between the first flange and the second flange, and the first flange and the second flange jointly define the positions of the first flange, the grinding wheel and the second flange in the axial direction of the extension rod.

[0016] As a further improvement of an embodiment of the present utility model, the first flange, the grinding wheel and the second flange are arranged in sequence in a direction away from the main shaft, and the at least three arc-shaped balance blocks are arranged on a surface of the second flange facing away from the grinding wheel.

[0017] An embodiment of the present utility model further provides a surface grinder, including a main shaft and the fixture as described above, and the extension rod is arranged in a direction parallel to the main shaft of the surface grinder and is connected to the main shaft.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] By making the cross-sectional area of the extension rod gradually decrease from the proximal end to the distal end, and the grinding wheel is sleeved on the extension rod and is arranged close to the distal end, so that the mounting hole of the grinding wheel can be set to be smaller, and further, it can be ensured that the diameter of the grinding surface on the outer periphery of the grinding wheel is smaller. Therefore, it can meet the processing requirements of small and precise punches. Description of the Drawings

[0020] Figure 1 FIG. is a schematic structural diagram of a fixture mounted on a main shaft provided by an embodiment of the present utility model;

[0021] Figure 2 is Figure 1 exploded structural diagram of;

[0022] Figure 3 is Figure 2 structural diagram of the extension rod in;

[0023] Figure 4 is Figure 2 structural diagram of the first flange in;

[0024] Figure 5 is Figure 2 structural diagram of the second flange in.

[0025] The above description of the drawings includes the following reference numerals:

[0026] 1. Extension rod;

[0027] 11. Second flange;

[0028] 12. Proximal end;

[0029] 13. Distal end;

[0030] 14. Assembly hole;

[0031] 15. External thread;

[0032] 2. Grinding wheel assembly;

[0033] 21. Grinding wheel;

[0034] 211. Mounting hole;

[0035] 22. First flange;

[0036] 221. Flange body;

[0037] 222. Connecting part;

[0038] 23. Second flange;

[0039] 231. Internal thread hole;

[0040] 3. Arc-shaped balance weight;

[0041] 4. Connector;

[0042] 41. First flange;

[0043] 42. Mounting external thread;

[0044] 500. Main shaft;

[0045] 510. Frustum-shaped connecting part;

[0046] 511. Mounting groove. Detailed implementation manners

[0047] It should be noted that, without conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0048] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0049] In the present utility model, unless otherwise stated, the orientation terms such as "upper, lower, top, bottom" are generally in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction of the component itself; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms do not limit the present utility model.

[0050] In order to solve the problem that in the prior art, due to the limitation of the minimum diameter of the mounting hole for adapting the grinding wheel of the surface grinder (usually about Φ80mm), the grinding surface diameter of the outer periphery of the grinding wheel is relatively large, making it difficult to meet the processing requirements for small and precise punches. The present utility model provides a fixture for a surface grinder and a surface grinder.

[0051] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0052] As Figures 1-5As shown in the figure, the present utility model provides a fixture for a surface grinder, which includes an extension rod 1 and a grinding wheel assembly 2.

[0053] The extension rod 1 is arranged along the direction parallel to the main shaft 500 of the surface grinder and is connected to the main shaft 500. The extension rod 1 has a proximal end 12 connected to the main shaft and a distal end 13 away from the main shaft. The cross-section of the extension rod 1 gradually becomes smaller from the proximal end to the distal end.

[0054] The grinding wheel assembly 2 includes a grinding wheel 21. The grinding wheel 21 is sleeved on the extension rod 1 and is arranged close to the distal end. The grinding wheel can pivot synchronously around the extension rod 1 relative to the main shaft 500.

[0055] Specifically, the grinding wheel 21 is provided with a mounting hole 211, which is usually opened along the central axis of the grinding wheel 21. The extension rod 1 passes through the mounting hole 211, so that the grinding wheel 21 can be sleeved on the extension rod 1.

[0056] In the present utility model, the cross-sectional area of the extension rod 1 gradually becomes smaller from the proximal end to the distal end. Therefore, the closer the grinding wheel 21 sleeved on the extension rod 1 is to the distal end, the smaller the diameter of its mounting hole 211 can be, so that the diameter of the grinding surface on its outer periphery is smaller, and thus the processing requirements for small and precise punches can be met.

[0057] With such a setting, when the main shaft 500 of the surface grinder rotates, the grinding wheel 21 mounted on the extension rod 1 can be driven by the extension rod 1 to rotate, realizing the grinding of the workpiece, overcoming the limitation of the too large diameter of the original grinding wheel of the grinding machine.

[0058] Reference Figure 2 As shown in the figure, in the further detailed description of the present utility model, the proximal end 12 of the extension rod 1 is sleeved on the main shaft 510 and is designed with a tapered inner side wall (not shown in the figure) that closely matches the main shaft 510, which ensures the stability and accuracy of the connection.

[0059] Specifically, the main shaft 510 has a main body part and a frustum-shaped connecting part 510. The frustum-shaped connecting part is formed on the end face of the main body part and is used to connect with the proximal end 12 of the extension rod 1. The cross-section of the frustum-shaped connecting part 510 gradually shrinks in the direction away from the end face. The tapered inner side wall is sleeved on the frustum-shaped connecting part 510. Therefore, the frustum-shaped connecting part 510 can be perfectly fitted with the tapered inner side wall to form a stable conical connection.

[0060] The outer wall of the frustum-shaped connecting part 510 is provided with an external thread, and the tapered inner wall is provided with an internal thread and is connected to the external thread of the frustum-shaped connecting part 510. This connection structure not only simplifies the installation process but also effectively improves the rigidity and stability of the overall structure, and can still maintain high-precision machining under the working condition of high-speed rotation, further meeting the high standards for the machining of small and precise punches.

[0061] Furthermore, the grinding wheel assembly 2 adopts an innovative double-flange structure for fixing the grinding wheel 21.

[0062] Specifically, the grinding wheel assembly 2 includes a first flange 22 and a second flange 23 arranged opposite to each other. The two are connected to each other and sleeved on the extension rod 1. At least one of the flanges is fixedly connected to the extension rod 1, and the grinding wheel 21 is firmly clamped between the two flanges. When the grinding wheel 21 pivots around the extension rod 1, it can remain stationary relative to the first flange 22 and the second flange.

[0063] With such a setting, the first flange 22 and the second flange 23 can be driven to pivot by driving the main shaft 500 to pivot, and then drive the grinding wheel 21 to pivot, so as to realize the synchronous pivoting movement of the grinding wheel 21 and the main shaft 500 to meet the requirements of the precision machining field.

[0064] Furthermore, to optimize the running stability of the grinding wheel assembly 2, the jig integrates at least three arc-shaped balance blocks 3. These balance blocks are cleverly arranged on one of the first flange 22 and the second flange 23 that is far from the main shaft 500. Through the specific weight and position configuration of the balance slider 3, the dynamic balance state of the grinding wheel assembly 2 is effectively corrected and maintained, ensuring reduced vibration during high-speed rotation and improving the machining accuracy and efficiency.

[0065] To further improve the accuracy and stability of the dynamic balance, the jig is specially designed with at least three arc-shaped balance blocks 3, and furthermore, these balance blocks 3 are cleverly located on the same circumference and evenly spaced along the circumference. This layout ensures that no matter how the grinding wheel assembly 2 rotates, it can maintain an evenly stressed state, effectively reducing the vibration caused by imbalance, thus significantly improving the machining accuracy and the smoothness of the overall operation.

[0066] To optimize the compactness of the overall structure and the dynamic balance effect, in the design of this jig, the circle where at least three arc-shaped balance blocks 3 are located, the second flange 23, the grinding wheel 21, and the first flange 22 are arranged coaxially. This layout not only ensures the consistency of each component during rotation but also greatly simplifies the installation and debugging process, and at the same time further improves the dynamic balance performance of the grinding wheel assembly, making the machining process more stable and efficient.

[0067] Further, one of the first flange 22 and the second flange 23 includes a flange body and a connecting portion extending from the axis direction of the flange body toward the other. An external thread is provided on the outer side of the side wall of the connecting portion, and an internal thread hole is provided on the other flange along its axis. The connecting portion passes through the internal thread hole.

[0068] As a preferred embodiment of the present utility model, referring to Figure 2 , Figure 4 and Figure 5 as shown, the first flange 22 includes a flange body 221 and a connecting portion 222. The connecting portion extends from the axis direction of the flange body 221 toward the second flange 23. The second flange 23 is provided with an internal thread hole 231 along its axis. The connecting portion 222 can accurately penetrate into the internal thread hole 231 and be screwed and fixed thereto.

[0069] This design can ensure a firm connection between the first flange 22 and the second flange 23, and firmly clamp the grinding wheel 21 between the two flanges. Thereby further improving the stability and accuracy of processing.

[0070] Further referring to Figures 3-4 as shown, the connecting portion 222 is provided as tubular. An internal thread is provided on the inner side of the side wall of the connecting portion 222. An external thread 15 is provided on the side wall of the extension rod 1 near the distal end 13. The external thread 15 cooperates with the internal thread on the inner side of the side wall of the connecting portion 222. With such a setting, the first flange 22 can be quickly and firmly connected to the extension rod 1. When driving the main shaft 500 to pivot, the extension rod 1 can be driven to pivot synchronously. When the extension rod 1 pivots, the first flange 22 can be driven to pivot synchronously with the extension rod 1. And the first flange 22 is connected to the second flange 23 through the connecting portion 222, so as to realize the synchronous pivoting of the grinding wheel 21 clamped between the first flange 22 and the second flange 23 and the main shaft 500.

[0071] In order to meet the flexible adjustment requirements of the grinding wheel assembly during processing, a connecting member 4 is specially added to this fixture. The connecting member 4 accurately penetrates through the extension rod 1 and is connected to the main shaft 500.

[0072] Specifically, an installation groove 511 is provided at one end of the frustum-shaped connecting portion 510 of the main shaft 500 facing the grinding wheel. One end of the connecting member penetrates through the installation groove 511. Generally, an installation external thread 42 is provided on the side wall of the end of the connecting member 4 installed in the installation groove 511. An internal thread that cooperates with the installation external thread 42 is provided on the inner side of the side wall of the installation groove 511. With such a setting, the quick installation of the connecting member 4 and the main shaft 500 can be realized.

[0073] Further, referring to Figure 2 andFigure 3 On the side wall of the connecting member 4, a first flange 41 is ingeniously provided, and on the side wall of the extension rod 1, a matching second flange 11 is provided along the circumferential direction. These two flanges cooperate closely to not only firmly clamp the first flange 22, the grinding wheel 21, and the second flange 23, ensuring that they are located within the set spatial positions and restricting the positions of the first flange 22, the grinding wheel 21, and the second flange 23 in the axial direction of the extension rod. This design greatly enhances the stability of the jig, preventing the grinding wheel 21 from shifting in the axial direction of the extension rod 1 during pivotal movement, and enabling precise and efficient operation even in complex machining scenarios.

[0074] As a preferred embodiment of the present utility model, the first flange 22, the grinding wheel 21, and the second flange 23 are closely arranged and stacked in sequence along the direction away from the main shaft 500. To ensure the dynamic balance effect, at least three arc-shaped balance blocks 3 are particularly arranged on the side of the second flange 23 facing away from the grinding wheel 21, which not only ensures the compactness of the overall structure but also effectively corrects the rotational balance of the grinding wheel assembly, improving the stability and precision of the machining process.

[0075] An embodiment of the present utility model also provides a surface grinder, which includes a main shaft and the jig as described above. The extension rod 1 is arranged along a direction parallel to the main shaft 500 of the surface grinder and is connected to the main shaft 500.

[0076] In summary, the embodiments of the present utility model achieve the following technical effects:

[0077] The cross-sectional area of the extension rod 1 gradually decreases from the proximal end to the distal end, and the grinding wheel 21 is sleeved on the extension rod 1 and is arranged close to the distal end, so that the mounting hole 211 of the grinding wheel 21 can be set to be smaller, and thus the diameter of the grinding surface on the outer periphery of the grinding wheel is smaller, so that the processing requirements of small and precise punches can be met.

[0078] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than 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 efforts shall fall within the protection scope of the present utility model.

[0079] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0080] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0081] The above are only the preferred embodiments of the present utility model, and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fixture for a surface grinder, characterized in that, Comprising: An extension rod, arranged in a direction parallel to the main shaft of the surface grinder and connected to the main shaft. The extension rod has a proximal end connected to the main shaft and a distal end away from the main shaft, and the cross-section of the extension rod gradually becomes smaller from the proximal end to the distal end. A grinding wheel assembly, the grinding wheel assembly includes a grinding wheel, the grinding wheel is sleeved on the extension rod and arranged close to the distal end, and the grinding wheel can pivot synchronously relative to the main shaft around the extension rod.

2. The jig according to claim 1, characterized in that, The proximal end is sleeved on the main shaft and has a tapered inner side wall that fits against the main shaft.

3. The jig according to claim 1, wherein The grinding wheel assembly includes a first flange and a second flange that are oppositely arranged and connected to each other. The first flange and the second flange are sleeved on the extension rod and at least one of them is fixedly connected to the extension rod. The grinding wheel is arranged between the first flange and the second flange and remains fixed relative to the first flange and the second flange during the pivoting movement.

4. The jig according to claim 3, characterized in that, The fixture further includes at least three arc-shaped balance blocks, and the at least three arc-shaped balance blocks are arranged on one of the first flange and the second flange that is away from the main shaft and at least used to make the grinding wheel assembly achieve dynamic balance.

5. The jig according to claim 4, characterized in that, The at least three arc-shaped balance blocks are located on the circumference of the same circle and are evenly spaced along the circumference of the circle.

6. The jig according to claim 5, characterized in that, The circle where the at least three arc-shaped balance blocks are located, the second flange, the grinding wheel and the first flange are coaxially arranged.

7. The jig according to claim 3, wherein One of the first flange and the second flange includes a flange body and a connecting portion extending towards the other from the central axis direction of the flange body. The outer side wall of the connecting portion is provided with an external thread, and the other flange is provided with an internal threaded hole from its central axis, and the connecting portion passes through the internal threaded hole.

8. The jig according to claim 3, characterized in that, The fixture further includes a connecting piece, the connecting piece passes through the extension rod and is connected to the main shaft. A first flange is provided on the side wall of the connecting piece in the circumferential direction, and a second flange is provided on the side wall of the extension rod in the circumferential direction. The first flange, the grinding wheel and the second flange are located between the first flange and the second flange, and the first flange and the second flange jointly define the positions of the first flange, the grinding wheel and the second flange in the axial direction of the extension rod.

9. The jig according to claim 4, wherein The first flange, the grinding wheel and the second flange are arranged in sequence in the direction away from the main shaft, and the at least three arc-shaped balance blocks are arranged on the side of the second flange facing away from the grinding wheel.

10. A surface grinder, characterized in that, Comprising a main shaft and the fixture according to any one of claims 1-9, the extension rod is arranged in a direction parallel to the main shaft of the surface grinder and is connected to the main shaft.

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