Clamping tool

Abstract

The clamping tool comprises a mandrel and a first gland, a mounting table is arranged on the mandrel, a to-be-clamped piece is arranged on the mounting table in a sleeving mode, a limiting piece is arranged at the first end of the mounting table in the axis direction of the mandrel, the second end of the mounting table is connected with the first gland, and the first gland is used for pressing the to-be-clamped piece on the limiting piece. The mounting table is matched with the inner circumference of the to-be-clamped piece so as to limit the to-be-clamped piece in the radial direction of the mandrel and prevent the to-be-clamped piece from jumping in the direction perpendicular to the axis of the mandrel; the first gland is matched with the limiting piece so as to limit the piece to be clamped in the axis direction of the mandrel and prevent the piece to be clamped from swinging along the axis of the mandrel. The to-be-clamped piece is stably clamped through the clamping tool, so that it is guaranteed that the position of the to-be-clamped piece is not changed when the grinding machine grinds the periphery of the to-be-clamped piece.

Description

Technical Field

[0001] The present application relates to the technical field, and in particular to a clamping tool. Background Art

[0002] The inner wall of the cylinder barrel of the original hydraulic support is copper-plated, and the coating thickness is generally 0.04mm. When the boring machine is used to scrape the cylinder barrel, the boring head used is generally of standard size, such as Φ180 (+0.08, +0.21), Φ200 (+0.08, +0.21) and Φ220 (+0.08, +0.21). After the anti-corrosion process stabilizes, the customized size of the boring head becomes stable. Now the inner wall of the cylinder barrel adopts laser cladding process, and the thickness of the cladding layer is generally greater than 0.5mm. Taking into account the factors such as the later cladding shrinkage and processing clamping deflection, the boring head used is generally of standard size, such as Φ181 (+0.3, +0.4), Φ201 (+0.3, +0.4), Φ221 (+0.3, +0.4), etc.

[0003] In order to meet the needs of scraping and rolling the cylinder barrel of the boring machine using the laser cladding process, the existing boring head needs to be modified. According to the analysis of the structure of the boring head, modifying the track of the boring head is the best solution. Specifically, the size of the small track is reduced by grinding.

[0004] Therefore, it is necessary to design a tool to clamp the boring head to ensure the stability of the position of the boring head during the grinding process. Utility Model Content

[0005] The present application proposes a clamping tool that can effectively clamp a boring head to ensure the stability of the position of the boring head during the grinding process.

[0006] In order to achieve the above-mentioned object, the present application provides a clamping tool, including a mandrel and a first gland,

[0007] The two ends of the mandrel in the axial direction can abut against the top of the grinding machine. A mounting platform is provided on the mandrel, and the clamping piece is sleeved on the mounting platform.

[0008] Along the axial direction of the core shaft, a limiting member is provided at the first end of the mounting platform, and the second end of the mounting platform is connected to the first pressure cover, and the first pressure cover is used to press the part to be clamped on the limiting member.

[0009] Preferably, in the above-mentioned clamping tool, the thickness of the mounting platform along the axial direction of the mandrel is greater than the thickness of the part to be clamped.

[0010] The first pressure cover comprises a pressure plate and a pressure ring. The pressure ring is sleeved on the mounting platform and one end of the pressure ring away from the pressure plate can abut against the part to be clamped.

[0011] Preferably, in the above-mentioned clamping fixture, the pressing plate is connected to the mounting platform by bolts, or the pressing ring is connected to the mounting platform by threads.

[0012] Preferably, in the above-mentioned clamping tool, along the axial direction of the mandrel, the thickness of the mounting platform is less than or equal to the thickness of the part to be clamped.

[0013] The first pressure cover is in the shape of a flat plate, and is connected to the mounting platform via bolts. The outer diameter of the first pressure cover is smaller than the outer diameter of the part to be clamped.

[0014] Preferably, in the above-mentioned clamping tool, a pressing block is provided on the side of the first pressure cover that is in contact with the piece to be clamped, and the first pressure cover presses the piece to be clamped through the pressing block.

[0015] Preferably, in the above-mentioned clamping fixture, both ends of the mandrel are provided with slots for the grinding machine center to be inserted.

[0016] Preferably, in the above-mentioned clamping tool, the mounting platform and the core shaft are integrally formed, or the mounting platform and the core shaft are detachably connected.

[0017] Preferably, in the above-mentioned clamping tool, the limiting member is an annular boss, and the annular boss is arranged along the circumference of the mounting platform.

[0018] Preferably, in the above-mentioned clamping tool, the limiting member is a second pressure cover, and the second pressure cover is detachably connected to the second end of the mounting platform.

[0019] The clamping tool provided in the embodiment of the present application includes a mandrel and a first pressure cover. A mounting table is provided on the mandrel, and the part to be clamped is sleeved on the mounting table. A limiting member is provided at the first end of the mounting table along the axial direction of the mandrel, and the second end of the mounting table is connected to the first pressure cover, and the first pressure cover is used to press the part to be clamped on the limiting member. The mounting table cooperates with the inner circumference of the part to be clamped to limit the part to be clamped along the radial direction of the mandrel to prevent the part to be clamped from jumping along the axial direction perpendicular to the mandrel; the first pressure cover cooperates with the limiting member to limit the part to be clamped along the axial direction of the mandrel to prevent the part to be clamped from swinging along the axis of the mandrel. The part to be clamped is stably clamped by the clamping tool to ensure that the position of the part to be clamped does not change when the grinder grinds the outer periphery of the part to be clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the present application can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0021] Figure 1 It is a structural schematic diagram of the clamping tooling of the present application;

[0022] Figure 2 is a side view of the clamping tool of the present application;

[0023] Figure 3 It is a schematic diagram of the overall structure of the mandrel, mounting platform and limiting member of the clamping tool of the present application;

[0024] Figure 4 It is a structural schematic diagram of the first gland of the clamping tool of the present application;

[0025] Figure 5 is a side view of a first gland of the clamping tool of the present application;

[0026] Figure 6 It is a schematic diagram of the structure of the boring head of the workpiece to be clamped.

[0027] The accompanying drawings are as follows:

[0028] 1- mandrel; 2- first pressure cover; 21- pressure plate; 22- pressure ring; 3- mounting platform; 4- limiting member; 5- member to be clamped. DETAILED DESCRIPTION

[0029] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It will be understood that the specific embodiments described herein are only used to explain the related application, rather than to limit the application. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0030] It should be noted that, for ease of description, only the parts related to the relevant applications are shown in the accompanying drawings. In the absence of conflict, the embodiments in this application and the features in the embodiments can be arbitrarily combined with each other, as long as the combined technical features are not contradictory. All feasible feature combinations are technical contents clearly recorded in this article. Any of the multiple sub-features contained in the same sentence can be applied independently, and does not have to be applied together with other sub-features.

[0031] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0032] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0033] See also Figure 1-Figure 6 .

[0034] Some embodiments of the present application disclose a clamping tool for stably clamping a part to be clamped 5 to ensure that the position of the part to be clamped 5 does not change when the grinding machine is grinding the periphery of the part to be clamped 5 .

[0035] The clamping tool disclosed in the present application is not only applicable to grinding machines, but also applicable to other equipment that has a clamping requirement for workpieces.

[0036] The clamping tool disclosed in the present solution comprises a mandrel 1 and a first gland 2. The two ends of the mandrel 1 in the axial direction can abut against the top of the grinding machine. A mounting platform 3 is arranged on the mandrel 1, and a part to be clamped 5 is sleeved on the mounting platform 3.

[0037] The mounting platform 3 has a first end and a second end along the axial direction of the core shaft 1. The first end of the mounting platform 3 is provided with a limiting member 4. The second end of the mounting platform 3 is connected to the first pressure cover 2. The first pressure cover 2 is used to press the part to be clamped 5 on the limiting member 4 to achieve clamping of the part to be clamped 5.

[0038] The clamping tool disclosed in the present application is used to prevent the position change of the part to be clamped 5 along the radial, circumferential and axial directions of the core shaft 1 during the grinding process. Specifically, the mounting table 3 cooperates with the inner circumference of the part to be clamped 5 to limit the part to be clamped 5 along the radial direction of the core shaft 1 to prevent the part to be clamped 5 from jumping along the axial direction perpendicular to the core shaft 1; the first pressure cover 2 cooperates with the limiting member 4 to clamp the part to be clamped 5 to limit the part to be clamped 5 along the axial direction of the core shaft 1 and the circumferential direction to prevent the part to be clamped 5 from swinging along the axis of the core shaft 1 and rotating around its own axis.

[0039] like Figure 3 As shown, the mounting platform 3 is cylindrical, and the shape of the mounting platform 3 is the same as the shape of the inner circumference of the clamped part 5. It can support various positions of the inner circumference of the clamped part 5 and improve the radial limiting effect of the clamped part 5.

[0040] The mounting platform 3 can also be composed of a plurality of strip structures radially arranged along the radial direction of the core shaft 1, the circumference of the end of the plurality of strip structures away from the core shaft 1 is the same shape as the inner circumference of the part to be clamped 5, and the plurality of strip structures support different positions of the inner circumference of the part to be clamped 5 to limit the part to be clamped 5 along the radial direction of the core shaft 1.

[0041] Preferably, the mounting table 3 is coaxially arranged with the core shaft 1 .

[0042] The installation process of the clamping part 5 in the clamping tool is as follows:

[0043] The part to be clamped 5 is sleeved on the mounting platform 3 from the second end of the mounting platform 3 until the part to be clamped 5 is fitted with the limiting member 4;

[0044] The first pressure cover 2 is connected to the second end of the mounting platform 3 , and the first pressure cover 2 applies a pressing force to the part to be clamped 5 , so that the part to be clamped 5 is pressed between the first pressure cover 2 and the limiting member 4 .

[0045] After the part to be clamped 5 is assembled on the clamping fixture, the whole formed by the part to be clamped 5 and the clamping fixture is matched with the grinding machine center.

[0046] The clamping tool disclosed in the present application can press the part 5 to be clamped for circumferential grinding, and the clamping tool has a simple structure and is easy to assemble.

[0047] like Figure 1 As shown, along the axial direction of the core shaft 1, the thickness of the mounting platform 3 is greater than the thickness of the part to be clamped 5, so that after the part to be clamped 5 is sleeved on the mounting platform 3 and fits with the stopper 4, a portion of the second end of the mounting platform 3 is still not covered by the part to be clamped 5;

[0048] The first pressure cover 2 includes a pressure plate 21 and a pressure ring 22 . The first pressure cover 2 is sleeved on a position of the second end of the mounting platform 3 not covered by the clamped part 5 through the pressure ring 22 , and one end of the pressure ring 22 away from the pressure plate 21 abuts against the clamped part 5 .

[0049] Preferably, the pressing plate 21 is parallel to the end surface of the second end of the mounting platform 3 .

[0050] like Figure 4 As shown, the first gland 2 is a cylindrical structure with one end being an open end. The inner circumference of the pressure ring 22 of the first gland 2 cooperates with the outer circumference of the mounting platform 3. The pressure plate 21 of the first gland 2 is provided with a through hole for the core shaft 1 to pass through.

[0051] When the first gland 2 is connected to the mounting platform 3 , as the locking force between the first gland 2 and the mounting platform 3 increases, the pressing force applied by the first gland 2 to the to-be-clamped part 5 also gradually increases.

[0052] In this embodiment, the sum of the thickness of the first pressure cover 2 along its own axial direction and the thickness of the part to be clamped 5 along the axial direction of the core shaft 1 is greater than the thickness of the mounting platform 3 along the axial direction of the core shaft 1, so as to increase the adjustable range of the clamping force of the first pressure cover 2 on the part to be clamped 5.

[0053] When the pressing plate 21 of the first pressing cover 2 is in contact with the end surface of the second end of the mounting platform 3, the pressing force of the first pressing cover 2 on the to-be-clamped part 5 reaches a maximum.

[0054] In this solution, the mounting platform 3 is arranged close to the middle position of the axis direction of the core shaft 1.

[0055] In the embodiment where the first gland 2 includes a pressing plate 21 and a pressing ring 22 , the connection between the first gland 2 and the mounting platform 3 may be a connection between the pressing plate 21 and the mounting platform 3 , or a connection between the pressing ring 22 and the mounting platform 3 .

[0056] When the pressing plate 21 is connected to the mounting platform 3, the pressing plate 21 and the mounting platform 3 can be connected by bolts. Specifically, the mounting platform 3 has a threaded hole opened along the axial direction of the core shaft 1, and the pressing plate 21 has a mounting hole corresponding to the position of the threaded hole of the mounting platform 3. The bolt passes through the mounting hole and cooperates with the threaded hole of the mounting platform 3 to achieve the connection between the pressing plate 21 and the mounting platform 3. The tightening length of the bolt in the bolt hole is adjusted to adjust the clamping force of the pressing ring 22 on the clamping member 5.

[0057] When the pressing ring 22 is connected to the mounting platform 3, the pressing ring 22 and the mounting platform 3 are connected by threads. Specifically, the inner wall of the pressing ring 22 is provided with internal threads, and the mounting platform 3 is provided with external threads. The pressing ring 22 cooperates with the external threads of the mounting platform 3 through the internal threads to achieve the connection between the pressing ring 22 and the mounting platform 3. By adjusting the tightening length of the pressing ring 22 on the mounting platform 3, the pressing force of the pressing ring 22 on the clamping member 5 to be clamped is adjusted.

[0058] In other embodiments of the present application, along the axial direction of the core shaft 1, the thickness of the mounting platform 3 is less than or equal to the thickness of the part to be clamped 5. In this embodiment, the first pressure cover 2 is flat, the first pressure cover 2 is connected to the mounting platform 3 by bolts, and the outer diameter of the first pressure cover 2 is smaller than the outer diameter of the part to be clamped 5.

[0059] Specifically, a bolt hole is provided on the mounting platform 3, and a mounting hole corresponding to the position of the bolt hole is provided on the first gland 2. After the part 5 to be clamped is sleeved on the mounting platform 3, the first gland 2 is fitted with the end surface of the part 5 to be clamped, and then the bolts are matched with the bolt holes of the mounting platform 3 through the mounting holes, so that the first gland 2 presses the part 5 to be clamped.

[0060] In order to further optimize the above technical solution, the present application provides a pressing block on the side where the first pressure cover 2 is in contact with the part to be clamped 5, and the first pressure cover 2 presses the part to be clamped 5 through the pressing block.

[0061] The design of the pressing blocks can reduce the requirement on the flatness of the first gland 2 , and at the same time each pressing block can fit with the part to be clamped 5 .

[0062] The position of the clamping block may correspond to the position of the bolt hole, or may be staggered with respect to the bolt hole.

[0063] In order to improve the stability of the cooperation between the grinding machine top and the mandrel 1, this solution has slots at both ends of the mandrel 1. When the grinding machine top and the mandrel 1 cooperate, the grinding machine top is inserted into the slot. The slot is used to realize the positioning of the mandrel 1 on the grinding machine top to prevent the relative position of the mandrel 1 and the grinding machine top from changing during the grinding process of the clamped part 5.

[0064] The mounting platform 3 and the core shaft 1 can be an integrally formed structure, or the mounting platform 3 and the core shaft 1 can be a separate structure.

[0065] When the mounting platform 3 and the core shaft 1 are an integrally formed structure, there is no need to assemble the mounting platform 3 and the core shaft 1, which reduces the difficulty of using the clamping tool.

[0066] When the mounting platform 3 and the mandrel 1 are separate structures, the mounting platform 3 and the mandrel 1 can be detachably connected. Specifically, the mounting platform 3 and the mandrel 1 can be pin-connected, bolt-connected, or clamped.

[0067] The mounting table 3 and the core shaft 1 are connected in a split form, so when the mounting table 3 or the core shaft 1 is damaged, only the damaged part needs to be replaced, thereby reducing the maintenance cost. At the same time, when the part to be clamped 5 changes, only the mounting table 3 can be replaced without replacing the core shaft 1, thereby increasing the application range of the part to be clamped 5. In addition, the size of the mounting table 3 is larger than that of the core shaft 1, and the separately arranged mounting table 3 and core shaft 1 can be transported and carried separately, thereby reducing the difficulty of transportation and handling and the intensity of manual labor.

[0068] The limiting member 4 at the first end of the mounting platform 3 may be in various forms.

[0069] like Figure 3 As shown, the mounting platform 3 and the limiting member 4 are integrally formed, and the limiting member 4 is an annular plate structure arranged on the outer periphery of the first end of the mounting platform 3 .

[0070] Along the axial direction of the core shaft 1, the outer diameters of the annular plate-shaped limiting member 4 at various locations can be equal, or the outer diameter can gradually increase, that is, the annular plate-shaped limiting member 4 is in a truncated cone shape, and the part to be clamped 5 can be interference fit with the smaller end of the annular plate-shaped limiting member 4, so that the limiting member 4 can improve the circumferential limitation of the part to be clamped 5 while limiting the part to be clamped 5.

[0071] The limiting member 4 may also be a limiting protrusion, and the limiting protrusion is evenly or uniformly arranged along the outer circumference of the first end of the mounting platform 3 .

[0072] In some other embodiments of the present application, the limiting member 4 may also be a second pressure cover, and the second pressure cover has the same shape as the first pressure cover 2 .

[0073] In this embodiment, the first pressure cover 2 and the second pressure cover are respectively located at the second end and the first end of the mounting platform 3, and the first pressure cover 2 and the second pressure cover are detachably connected to the mounting platform 3, so that the part to be clamped 5 can be inserted from the first end of the mounting platform 3, and can also be inserted from the second end of the mounting platform 3, which improves the flexibility of installing the part to be clamped 5. At the same time, the clamping force of the first pressure cover 2 and the second pressure cover on the part to be clamped 5 can be adjusted, which improves the flexibility of using the clamping tooling, and the staff can choose a suitable working position according to the operating space.

[0074] For example, the part to be clamped 5 can be a boring head, the boring head is mounted on the clamping fixture, and the grinder grinds the outer circle of the boring head. The clamping fixture can effectively prevent the boring head from sliding during the grinding process.

[0075] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used, and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. The scope of application involved in the present application is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned application concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in this application (but not limited to) to form a technical solution.

Claims

1. A clamping tool, characterized in that: It comprises a core shaft (1) and a first gland (2), Both ends of the mandrel (1) in the axial direction can abut against the top of the grinding machine. A mounting platform (3) is provided on the mandrel (1), and the clamping member (5) is sleeved on the mounting platform (3). Along the axial direction of the core shaft (1), a limiting member (4) is provided at the first end of the mounting platform (3), and the second end of the mounting platform (3) is connected to the first pressure cover (2), and the first pressure cover (2) is used to press the part to be clamped (5) onto the limiting member (4).

2. The clamping tool according to claim 1, characterized in that: The thickness of the mounting platform (3) along the axial direction of the core shaft (1) is greater than the thickness of the part to be clamped (5). The first pressure cover (2) comprises a pressure plate (21) and a pressure ring (22); the pressure ring (22) is sleeved on the mounting platform (3) and one end of the pressure ring (22) away from the pressure plate (21) is capable of abutting against the part to be clamped (5).

3. The clamping tool according to claim 2, characterized in that: The pressing plate (21) is connected to the mounting platform (3) by means of bolts, or the pressing ring (22) is connected to the mounting platform (3) by means of threads.

4. The clamping tool according to claim 1, characterized in that: Along the axial direction of the core shaft (1), the thickness of the mounting platform (3) is less than or equal to the thickness of the part to be clamped (5). The first pressure cover (2) is in the shape of a flat plate, the first pressure cover (2) is connected to the mounting platform (3) via bolts, and the outer diameter of the first pressure cover (2) is smaller than the outer diameter of the part to be clamped (5).

5. The clamping tool according to claim 4, characterized in that: A pressing block is provided on the side of the first pressure cover (2) that is in contact with the part to be clamped (5), and the first pressure cover (2) presses the part to be clamped (5) through the pressing block.

6. The clamping tool according to claim 1, characterized in that: Both ends of the mandrel (1) are provided with slots for inserting the grinding machine top.

7. The clamping tool according to claim 1, characterized in that: The mounting platform (3) and the core shaft (1) are integrally formed, or the mounting platform (3) and the core shaft (1) are detachably connected.

8. The clamping tool according to claim 1, characterized in that: The limiting member (4) is an annular boss, and the annular boss is arranged along the circumference of the mounting platform (3).

9. The clamping tool according to claim 1, characterized in that: The limiting member (4) is a second pressure cover, which is detachably connected to the second end of the mounting platform (3).

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