Clamping device for spherical teeth

Abstract

The utility model discloses a clamping device for spherical teeth, which comprises a base, and an accommodating cavity with one open end is formed on the base; the device comprises a base, a containing cavity is formed in the base, the movable caliper is installed in the containing cavity, the magnetic rod is movably arranged on the base in a penetrating mode, one end of the magnetic rod is an adsorption end, the adsorption end extends into the containing cavity to be connected with the movable caliper, and the adsorption end is suitable for adsorbing spherical teeth at the open end of the containing cavity. The base is arranged to push the movable calipers to clamp the spherical teeth when moving towards the spherical teeth. According to the clamping device for the spherical teeth, in the grinding process of the spherical teeth, the spherical teeth can be stably clamped, the situation that the spherical teeth are separated from the clamping device in the grinding process is avoided, the clamping reliability of the spherical teeth is improved, the spherical teeth do not need to be held tightly manually, and damage to operators in the grinding process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ball gear processing, in particular to a clamping device for a ball gear. Background Art

[0002] Carbide ball teeth are widely used in oil drilling and cutting tools, mining machinery, road maintenance and coal drilling tools. Carbide ball teeth for mining are mainly used as excavation tools in quarrying, mining, tunnels and civil buildings. The working surface of the ball tooth is spherical, so it is called "ball tooth". When the carbide ball tooth products are undergoing quality inspection, Rockwell hardness testing is required. Before the test of this project, the sphere needs to be ground and polished to obtain a plane parallel to the bottom for Rockwell hardness testing. In routine inspection work, the ball teeth are pinched with fingers and then ground and polished on a manual grinder. First, some ball teeth are small and difficult to hold by hand, and there is a risk of being thrown out during the high-speed rotation of the grinding disc, and there are also safety hazards; secondly, it is difficult to form a plane parallel to the bottom when grinding and polishing by hand, and multiple planes will appear, resulting in unstable results, and there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a clamping device for a ball tooth, which can effectively clamp the ball tooth and ensure the grinding effect.

[0004] According to the embodiment of the utility model, the clamping device of the ball tooth includes: a base, the base is formed with a accommodating cavity with an open end; a movable caliper and a magnetic rod, the movable caliper is installed in the accommodating cavity, the magnetic rod can be movably passed through the base, one end of the magnetic rod is constructed as an adsorption end, the adsorption end extends into the accommodating cavity to be connected with the movable caliper, the adsorption end is suitable for adsorbing the ball tooth at the open end of the accommodating cavity, and the base is configured to push the movable caliper to clamp the ball tooth when moving toward the ball tooth.

[0005] According to the clamping device of the ball gear of the embodiment of the utility model, the clamping device can stably clamp the ball gear during the grinding process of the ball gear, avoiding the ball gear from being separated from the clamping device during the grinding process, improving the reliability of the ball gear clamping, and the ball gear is easy to remove after the grinding is completed, and the operation is convenient. In addition, during the clamping and grinding process, the ball gear does not need to be manually gripped, avoiding injuries to the operator during the grinding process, and improving the safety of the grinding process.

[0006] According to the clamping device of the ball tooth in some embodiments of the utility model, the movable caliper includes a plurality of elastic clamping parts distributed along the circumferential direction, and the plurality of elastic clamping parts jointly define a clamping hole, the adsorption end extends to the clamping hole and is suitable for adsorbing the ball tooth in the clamping hole, and the base is suitable for pushing the plurality of elastic clamping parts close to each other to clamp the ball tooth.

[0007] According to the clamping device of the ball tooth in some embodiments of the utility model, the inner peripheral wall of the accommodating cavity is formed with a pushing inclined surface, the outer peripheral wall of the elastic clamping part is formed with a pressing inclined surface, and the base is suitable for pressing the pressing inclined surface through the pushing inclined surface to push the elastic clamping part to deform.

[0008] According to the clamping device of the ball teeth in some embodiments of the utility model, each of the elastic clamping parts includes a main body section and a pressing section, the main body sections of the plurality of elastic clamping parts are spliced ​​into a cylindrical shape and the pressing sections are spliced ​​into a truncated cone shape, and the pressing inclined surface is formed on the outer peripheral wall of the pressing section;

[0009] Wherein, the accommodating cavity includes a main body cavity and a pushing cavity, the main body section is located in the main body cavity, the pressing section is located in the pushing cavity, and the pushing slope is formed on the inner peripheral wall of the pushing cavity.

[0010] According to the ball tooth clamping device of some embodiments of the utility model, a first weakened groove is formed at the connection between two adjacent elastic clamping parts, the first weakened groove is located on the outside of the elastic clamping part and passes through the axial direction of the movable caliper, and the two adjacent elastic clamping parts are suitable for elastically deforming toward the first weakened groove after being compressed.

[0011] According to the ball tooth clamping device of some embodiments of the utility model, each of the elastic clamping parts is provided with a second weakened groove, the second weakened groove is located at one end of the elastic clamping part and passes through the radial direction of the movable caliper, and the parts of the elastic clamping part located on both sides of the second weakened groove are suitable for elastically deforming toward the second weakened groove after being compressed.

[0012] According to the clamping device of the ball tooth in some embodiments of the utility model, the base is provided with a movable hole connected with the accommodating cavity, the magnetic rod can be movably inserted into the movable hole, and a limiting portion is provided on the outside of the magnetic rod, and the limiting portion is suitable for limiting and pressing against the outer side of the base when the magnetic rod extends into the accommodating cavity to the maximum position.

[0013] According to the clamping device of the ball tooth in some embodiments of the present invention, the extending direction of the movable hole is the same as the opening direction of the accommodating cavity, and the movable hole is connected to a side of the accommodating cavity opposite to its open end.

[0014] According to the clamping device of the ball tooth in some embodiments of the utility model, the magnetic rod has a non-rotating cross-section, and the magnetic rod is limitedly matched with the movable hole along the circumferential direction.

[0015] According to the clamping device of the ball tooth in some embodiments of the utility model, the base includes a mounting portion and a receiving portion, the mounting portion is connected to the upper portion of the receiving portion, and the movable hole passes through the mounting portion to communicate with the receiving cavity, and the receiving cavity is formed in the receiving portion and open downward.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a schematic structural diagram of a clamping device according to an embodiment of the utility model;

[0019] Figure 2 is a cross-sectional view of a clamping device according to an embodiment of the utility model;

[0020] Figure 3 is a bottom view of a clamping device according to an embodiment of the utility model;

[0021] Figure 4 is a schematic structural diagram of a movable caliper according to an embodiment of the utility model;

[0022] Figure 5 It is a bottom view of the movable caliper according to the embodiment of the utility model.

[0023] Reference numerals:

[0024] Clamping device 100,

[0025] Base 1, accommodating cavity 11, main body cavity 111, pushing cavity 112, mounting portion 12, accommodating portion 13, movable hole 14, pushing inclined surface 15,

[0026] Active caliper 2, main body section 21, pressing section 22, elastic clamping portion 23, first weakened groove 24, second weakened groove 25, pressing inclined surface 26, clamping hole 27,

[0027] Magnetic rod 3, limiting portion 31, ball tooth 4. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Reference below Figure 1-Figure 5 A clamping device 100 for a ball tooth according to an embodiment of the utility model is described. The clamping device 100 can stably clamp the ball tooth 4, so that the ball tooth 4 can maintain a good stable state during the grinding process, avoiding the ball tooth 4 from falling off during the grinding process, and there is no need to manually grasp the ball tooth 4, thereby reducing the difficulty of user operation.

[0032] like Figure 1-Figure 5 As shown, a ball-tooth clamping device 100 according to an embodiment of the utility model comprises: a base 1, a movable caliper 2 and a magnetic rod 3.

[0033] The base 1 is formed with a receiving cavity 11 with an open end, and the movable caliper 2 is installed in the receiving cavity 11. The movable caliper 2 can be loaded into the receiving cavity 11 from the open end of the receiving cavity 11, and the movable caliper 2 can move relative to the base 1 in the receiving cavity 11. The magnetic rod 3 is movably arranged in the base 1, that is, the magnetic rod 3 can move relative to the base 1, and one end of the magnetic rod 3 is configured as an adsorption end for adsorbing the ball tooth 4, and the adsorption end extends into the receiving cavity 11 to be connected with the movable caliper 2, and the adsorption end is suitable for adsorbing the ball tooth 4 at the open end of the receiving cavity 11.

[0034] Therefore, during actual installation, one end of the magnetic rod 3 can be movably inserted into the base 1, and the other end of the magnetic rod 3 is the adsorption end and extends into the accommodating cavity 11 to be connected with the movable caliper 2, wherein the magnetic rod 3 and the movable caliper 2 can be fixedly connected so that the two can move together relative to the base 1.

[0035] Among them, the base 1 is configured to push the movable caliper 2 to clamp the ball tooth 4 when moving toward the ball tooth 4. It should be noted that when grinding the ball tooth 4, the accommodating cavity 11 can be opened toward the grinding disc of the grinder. After the adsorption end of the magnetic rod 3 adsorbs the ball tooth 4, the ball tooth 4 is located at the end of the magnetic rod 3 facing the grinding disc. At the same time, the movable caliper 2 and the magnetic rod 3 are relatively fixed. At this time, the base 1 can be pressed toward the grinding disc to make the base 1 move relative to the magnetic rod 3, the movable caliper 2 and the ball tooth 4, and then the base 1 can act on the movable caliper 2 during the movement of the base 1 toward the ball tooth 4, so that the movable caliper 2 can clamp the ball tooth 4 after being subjected to force, thereby achieving stable clamping of the ball tooth 4.

[0036] In other words, during the grinding process of the ball teeth 4, the ball teeth 4 can be first adsorbed on the adsorption end of the magnetic rod 3, and the open end of the ball teeth 4 located in the accommodating cavity 11 protrudes toward the grinding disc, and the operator can press the base 1 toward the grinding disc, so that the base 1 pushes the movable caliper 2 to clamp the ball teeth 4, and the greater the force applied to the base 1, the more reliable the clamping effect of the ball teeth 4. After the grinding is completed, the force applied to the base 1 is removed, so that the clamping force of the base 1 on the movable caliper 2 is reduced, which is conducive to removing the polished ball teeth 4, and the structure is simple and easy to operate.

[0037] According to the clamping device 100 of the ball gear of the embodiment of the utility model, the clamping device 100 can stably clamp the ball gear 4 during the grinding process of the ball gear 4, avoiding the ball gear 4 from being separated from the clamping device 100 during the grinding process, improving the reliability of the clamping of the ball gear 4, and the ball gear 4 is easy to remove after the grinding is completed, and the operation is convenient. In addition, during the clamping and grinding process, the ball gear 4 does not need to be manually gripped, avoiding the situation that the operator is injured during the grinding process, and improving the safety of the grinding process.

[0038] In some embodiments, the active caliper 2 includes a plurality of elastic clamping portions 23 distributed along the circumferential direction, and the plurality of elastic clamping portions 23 jointly define a clamping hole 27, wherein the active caliper 2 is made of an elastic material, so that the plurality of elastic clamping portions 23 can be elastically deformed when subjected to force, and at least parts of two adjacent elastic clamping portions 23 are connected, so that the plurality of elastic clamping portions 23 of the active caliper 2 are constructed as a whole, and the clamping hole 27 is located in the middle position of the plurality of elastic clamping portions 23.

[0039] Among them, a plurality of elastic clamping parts 23 define a clamping hole 27, the clamping hole 27 is configured as a through hole, and the clamping hole 27 is axially penetrated by the movable caliper 2, the magnetic rod 3 is penetrated in the clamping hole 27, and the adsorption end is located in the clamping hole 27, that is, the adsorption end extends into the clamping hole 27, and the adsorption end is suitable for adsorbing the ball tooth 4 in the clamping hole 27. Specifically, as Figure 2 As shown, the lower end of the magnetic rod 3 is constructed as an adsorption end, and the adsorption end is located in the movable caliper 2, the ball tooth 4 is adsorbed on the lower end of the magnetic rod 3, a part of the ball tooth 4 is located in the clamping hole 27 and between multiple elastic clamping parts 23, and the other part of the ball tooth 4 extends out of the clamping hole 27 and extends to the bottom of multiple elastic clamping parts 23.

[0040] The base 1 is suitable for pushing the multiple elastic clamping parts 23 close to each other to clamp the ball tooth 4, wherein the base 1 is sleeved on the outside of the multiple elastic clamping parts 23, and when the base 1 moves toward the ball tooth 4, the base 1 is pressed against the outer peripheral wall of the elastic clamping part 23, such as the base 1 moves downward toward the grinding disc, and during the downward movement, it can push the multiple elastic clamping parts 23 toward the clamping hole 27 to achieve clamping of the ball tooth 4, and the more the base 1 is pressed toward the grinding disc, the more the multiple elastic clamping parts 23 clamp the ball tooth 4, thereby ensuring the clamping effect of the ball tooth 4.

[0041] In some embodiments, the inner wall of the accommodating cavity 11 is formed with a pushing slope 15, and the outer wall of the elastic clamping portion 23 is formed with a pressing slope 26. The base 1 is suitable for pushing the elastic clamping portion 23 to deform by pressing the pushing slope 15 against the pressing slope 26, that is, the base 1 and the movable caliper 2 are pressed together by the pushing slope 15 and the pressing slope 26, so that the base 1 can push multiple elastic clamping portions 23 to clamp the ball teeth 4.

[0042] Among them, Figure 2As shown, the inner peripheral wall of the open end of the accommodating cavity 11 is constructed as a pushing slope 15, and the pushing slope 15 forms a certain angle with the opening direction of the accommodating cavity 11, and the pushing slope 15 is constructed as an annular slope, so that the pushing slope 15 forms a flared shape at the open end of the accommodating cavity 11. At the same time, the shape of the pressing slope 26 of the elastic clamping portion 23 is adapted to the shape of the pushing slope 15, that is, the angles of the two relative to the opening direction of the accommodating cavity 11 can be set to be the same, so that when the base 1 pushes the movable caliper 2, the two are in surface contact, thereby improving the reliability of the pushing process.

[0043] It should be noted that by pressing the base 1 and the movable caliper 2 together through the inclined surface, the greater the matching depth between the base 1 and the movable caliper 2, the greater the pressing force of the base 1 on the movable caliper 2. Specifically, Figure 2 As shown, when the base 1 is pressed downward, the portion of the pushing inclined surface 15 of the base 1 with a smaller radial dimension gradually presses the portion of the pressing inclined surface 26 with a larger radial dimension, the two are more closely matched, and the pressing effect on the movable caliper 2 is more stable.

[0044] In some embodiments, each elastic clamping portion 23 includes a main body section 21 and a pressing section 22. The main body sections 21 of the plurality of elastic clamping portions 23 are spliced ​​into a cylindrical shape and the pressing sections 22 are spliced ​​into a truncated cone shape. The pressing slope 26 is formed on the outer peripheral wall of the pressing section 22, that is, Figure 4 and Figure 5 As shown, the movable caliper 2 is constructed to include a cylindrical portion and a truncated cone portion. At the same time, the accommodating chamber 11 includes a main chamber 111 and a pushing chamber 112, the main section 21 is located in the main chamber 111, the pressing section 22 is located in the pushing chamber 112, and the pushing inclined surface 15 is formed on the inner peripheral wall of the pushing chamber 112, that is, the accommodating chamber 11 is also constructed to include a cylindrical portion and a truncated cone portion.

[0045] Therefore, during actual installation, the active caliper 2 is installed in the accommodating cavity 11, the main body section 21 is located in the main body cavity 111 and can move along the main body cavity 111, and the pressing section 22 is located in the pushing cavity 112, wherein the outer diameter dimension of the pressing section 22 is constructed to gradually increase from the end connected to the main body section 21 to the end away from the main body section 21, and at the same time, the inner diameter dimension of the pushing cavity 112 is constructed to gradually increase from the end connected to the main body cavity 111 to the end away from the main body cavity 111, so that the active caliper 2 and the base 1 can be compactly installed and matched.

[0046] In this way, during the grinding process of the ball tooth 4, pressure can be applied to the base 1 to make the base 1 move along the main section 21, and when the inner wall of the pushing cavity 112 is gradually pressed toward the outer peripheral wall of the pressing section 22, the base 1 pushes the movable caliper 2 to gradually press the ball tooth 4, thereby achieving the tightening of the ball tooth 4.

[0047] In some embodiments, a first weakened groove 24 is formed at the connection between two adjacent elastic clamping portions 23. The first weakened groove 24 is located on the outer side of the elastic clamping portions 23 and passes through the axial direction of the movable caliper 2. The two adjacent elastic clamping portions 23 are suitable for elastically deforming toward the first weakened groove 24 after being compressed. Therefore, when the movable caliper 2 is subjected to pressure from the base 1, multiple elastic clamping portions 23 are compressed and deformed, and any two adjacent elastic clamping portions 23 can be deformed toward the corresponding first weakened groove 24, so that the multiple elastic clamping portions 23 are close to each other to achieve clamping of the ball tooth 4.

[0048] It should be noted that the first weakened groove 24 passes through the axial direction of the movable caliper 2, and the first weakened groove 24 can be arranged on the radial outside of two adjacent elastic clamping parts 23, that is, the two adjacent elastic clamping parts 23 are connected at the radial inside, so that the two adjacent elastic clamping parts 23 are partially connected and partially spaced apart, thereby facilitating elastic deformation.

[0049] And, in a further embodiment, each elastic clamping portion 23 is provided with a second weakened groove 25, and the second weakened groove 25 is located at one end of the elastic clamping portion 23 and penetrates along the radial direction of the active caliper 2, and the parts of the elastic clamping portion 23 located on both sides of the second weakened groove 25 are suitable for elastically deforming toward the second weakened groove 25 after being pressed. Therefore, when the active caliper 2 is subjected to pressure from the base 1, each elastic clamping portion 23 is compressed and deformed, so that each elastic clamping portion 23 can be deformed toward the corresponding second weakened groove 25, which is conducive to a deeper cooperation between the base 1 and the active caliper 2, and further clamping the ball gear 4.

[0050] Similarly, it should be noted that the second weakened groove 25 is set to penetrate along the radial direction of the movable caliper 2, and the second weakened groove 25 can be set at one axial end of the movable caliper 2, and the other axial end of the movable caliper 2 is in a connected state. Figure 4 As shown, the second weakened groove 25 is mostly located in the pressing section 22 and is open in the pressing section 22 in a direction away from the main section 21, while a small part of the second weakened groove 25 is located in the main section 21. Thus, the elastic clamping portion 23 can deform toward the second weakened groove 25 to effectively tighten the ball gear 4.

[0051] In some embodiments, the base 1 is provided with a movable hole 14 connected to the accommodating cavity 11, and the magnetic rod 3 can be movably inserted into the movable hole 14, so that the magnetic rod 3 can move relative to the base 1 at the movable hole 14, so that the magnetic rod 3 can move relative to the base 1 after adsorbing the ball gear 4. In this way, when the base 1 is driven to move relative to the movable caliper 2, the base 1 can avoid the magnetic rod 3 at the movable hole 14 to avoid the magnetic rod 3 and the base 1 from interfering with each other, so that the base 1 can also move relative to the magnetic rod 3 and the ball gear 4, thereby facilitating the movable caliper 2 to clamp the ball gear 4.

[0052] The magnetic rod 3 is provided with a limiting portion 31 outside, and the limiting portion 31 is suitable for limiting and pressing against the outer side of the base 1 when the magnetic rod 3 extends into the accommodating cavity 11 to the maximum position. Figure 1 and Figure 2 As shown, the limiting portion 31 is sleeved outside the magnetic rod 3 and can play the role of axial limiting the magnetic rod 3. It should be noted that one end of the magnetic rod 3 extends into the accommodating cavity 11 and is connected to the movable caliper 2, and the other end of the magnetic rod 3 is a free end. After the magnetic rod 3 is inserted into the movable hole 14, the magnetic rod 3 is limited by the limiting portion 31, which can prevent the free end of the magnetic rod 3 from passing through the movable hole 14, prevent the magnetic rod 3 and the movable caliper 2 from automatically escaping from the accommodating cavity 11, and improve the stability of the structure.

[0053] Also, it should be noted that the limiting portion 31 can be constructed as a limiting nut. At the same time, an external thread can be set on the free end of the magnetic rod 3 so that the limiting nut and the magnetic rod 3 are threadedly connected, and then the position of the limiting nut on the magnetic rod 3 can be adjusted to achieve axial limiting of different lengths of the magnetic rod 3, and flexibly adjust the length of the magnetic rod 3 extending into the accommodating cavity 11 to meet different installation requirements.

[0054] In some embodiments, the extending direction of the movable hole 14 is the same as the opening direction of the accommodating chamber 11, and the movable hole 14 is connected to the side of the accommodating chamber 11 opposite to its open end. Thus, the movable hole 14 and the accommodating chamber 11 are opened in opposite directions respectively, and the accommodating chamber 11 is opened toward the grinding wheel. When the base 1 moves relative to the ball tooth 4, the magnetic rod 3 can avoid the base 1 along the movement direction of the base 1.

[0055] Specifically, Figure 2As shown, the accommodating cavity 11 is constructed to be open downward, and the movable hole 14 is connected to the top of the accommodating cavity 11, and the movable hole 14 is through in the up-down direction. In this way, when the magnetic rod 3 is inserted into the movable hole 14, the lower end of the magnetic rod 3 extends into the accommodating cavity 11, and the upper end of the magnetic rod 3 extends to the top of the base 1. When the base 1 moves downward toward the ball tooth 4, that is, when it moves toward the open side of the accommodating cavity 11, the base 1 moves downward relative to the movable caliper 2. At this time, the magnetic rod 3 extends upward from the movable hole 14 to fix the magnetic rod 3 and the movable caliper 2 and the ball tooth 4 relatively in the vertical direction, and the magnetic rod 3 moves in the movable hole 14 to achieve relative movement.

[0056] In some embodiments, the magnetic rod 3 has a non-rotating cross-section, and the magnetic rod 3 and the movable hole 14 are limited in a circumferential direction. In other words, when the base 1 and the magnetic rod 3 move relative to each other, the magnetic rod 3 can slide along the movable hole 14, and the magnetic rod 3 will not rotate relative to the base 1, thereby keeping the magnetic rod 3 and the movable caliper 2 stable.

[0057] Specifically, the magnetic rod 3 can be constructed with an elliptical cross-section or a triangular cross-section, so that the magnetic rod 3 can be effectively circumferentially limited with the base 1 to prevent the ball teeth 4 from automatically rotating with the magnetic rod 3 during the grinding process, thereby ensuring the grinding effect.

[0058] In some embodiments, the base 1 includes a mounting portion 12 and a accommodating portion 13, the mounting portion 12 is connected to the upper portion of the accommodating portion 13, and the movable hole 14 passes through the mounting portion 12 to communicate with the accommodating cavity 11, and the accommodating cavity 11 is formed in the accommodating portion 13 and is open downward. That is to say, the base 1 can be formed by two parts connected together, the mounting portion 12 is provided with a movable hole 14 for installing the magnetic rod 3, and the accommodating portion 13 is used to install the movable caliper 2, and the mounting portion 12 and the accommodating portion 13 can be welded together, or can be fixedly integrated, or can be arranged to be detachably connected, with a simple structure and flexible design.

[0059] Among them, the mounting portion 12 and the accommodating portion 13 are fixedly connected after being formed separately, so that the mounting portion 12 and the accommodating portion 13 can be processed respectively by different molds or methods, thereby reducing the processing difficulty of a single structural component and greatly reducing the molding cost of the base 1.

[0060] The following is combined with Figure 1-Figure 5 Describing a specific embodiment of the utility model, the base 1 is provided with a accommodating cavity 11, which is open downward, and a movable caliper 2 is provided in the accommodating cavity 11. The upper end of the magnetic rod 3 is passed through the top of the base 1, and the lower end of the magnetic rod 3 extends into the accommodating cavity 11 to be connected with the movable caliper 2, and the lower end of the magnetic rod 3 is adsorbed with a ball tooth 4 in the clamping hole 27 of the movable caliper 2.

[0061] During the specific grinding process, the clamping device 100 can be placed above the grinding disc so that the ball tooth 4 extends from the bottom wall of the movable caliper 2 and contacts the grinding disc. At this time, the base 1 can be pressed downward. During the pressing, the base 1 gradually presses against the movable caliper 2, and the contact between the pushing slope 15 and the pressing slope 26 makes the multiple elastic clamping parts 23 of the movable caliper 2 deform toward the clamping hole 27 in the middle, thereby achieving effective clamping of the ball tooth 4. After the grinding is completed, the base 1 is lifted upward to separate the pressing slope 26 and the pushing slope 15, and the movable caliper 2 is no longer subjected to the clamping force of the base 1. The multiple elastic clamping parts 23 are reset, and the ball tooth 4 is released. The operator can remove the ball tooth 4. The structure is simple, the operation process is convenient, and it is easy to implement.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A ball tooth clamping device, characterized in that: include: A base, wherein the base forms a receiving cavity with one end open; A movable caliper and a magnetic rod, wherein the movable caliper is installed in the accommodating cavity, the magnetic rod can be movably passed through the base, one end of the magnetic rod is constructed as an adsorption end, the adsorption end extends into the accommodating cavity to be connected with the movable caliper, the adsorption end is suitable for adsorbing the ball tooth at the open end of the accommodating cavity, and the base is configured to push the movable caliper to clamp the ball tooth when moving toward the ball tooth.

2. The clamping device of the ball gear according to claim 1, characterized in that: The movable caliper includes a plurality of elastic clamping parts distributed along the circumferential direction, and the plurality of elastic clamping parts jointly define a clamping hole, the adsorption end extends to the clamping hole and is suitable for adsorbing the ball tooth in the clamping hole, and the base is suitable for pushing the plurality of elastic clamping parts close to each other to clamp the ball tooth.

3. The clamping device of the ball gear according to claim 2, characterized in that: The inner peripheral wall of the accommodating cavity is formed with a pushing inclined surface, the outer peripheral wall of the elastic clamping portion is formed with a pressing inclined surface, and the base is suitable for pressing the pressing inclined surface through the pushing inclined surface to push the elastic clamping portion to deform.

4. The clamping device of the ball gear according to claim 3, characterized in that: Each of the elastic clamping parts comprises a main body section and a pressing section, the main body sections of the plurality of elastic clamping parts are spliced ​​into a cylindrical shape and the pressing sections are spliced ​​into a truncated cone shape, and the pressing inclined surface is formed on the outer peripheral wall of the pressing section; Wherein, the accommodating cavity includes a main body cavity and a pushing cavity, the main body section is located in the main body cavity, the pressing section is located in the pushing cavity, and the pushing slope is formed on the inner peripheral wall of the pushing cavity.

5. The clamping device of the ball gear according to claim 3, characterized in that: A first weakened groove is formed at the connection of two adjacent elastic clamping parts. The first weakened groove is located on the outside of the elastic clamping part and passes through the axial direction of the movable caliper. The two adjacent elastic clamping parts are suitable for elastically deforming toward the first weakened groove after being compressed.

6. The clamping device of the ball gear according to claim 3, characterized in that: Each of the elastic clamping parts is provided with a second weakened groove, which is located at one end of the elastic clamping part and passes through the movable caliper in the radial direction. The parts of the elastic clamping part located on both sides of the second weakened groove are suitable for elastically deforming toward the second weakened groove after being compressed.

7. The clamping device of the ball gear according to claim 1, characterized in that: The base is provided with a movable hole connected to the accommodating cavity, the magnetic rod can be movably inserted into the movable hole, and a limiting portion is provided outside the magnetic rod, which is suitable for limiting and pressing against the outer side of the base when the magnetic rod extends into the accommodating cavity to the maximum position.

8. The clamping device of the ball gear according to claim 7, characterized in that: The extending direction of the movable hole is the same as the opening direction of the accommodating cavity, and the movable hole is connected to a side of the accommodating cavity opposite to its open end.

9. The clamping device of the ball gear according to claim 7, characterized in that: The magnetic rod has a non-rotating cross section, and the magnetic rod is limitedly matched with the movable hole along the circumferential direction.

10. The clamping device of the ball gear according to claim 7, characterized in that: The base includes a mounting portion and a receiving portion, the mounting portion is connected to the upper portion of the receiving portion, and the movable hole passes through the mounting portion to communicate with the receiving cavity, and the receiving cavity is formed in the receiving portion and opens downward.

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