Universal fixing clamp

Abstract

The utility model relates to the field of hard alloy manufacturing, in particular to a universal fixing clamp which is used for fixing a to-be-machined product, and the to-be-machined product is provided with a first end face, a second end face and an inner hole penetrating through the to-be-machined product in the extending direction of the to-be-machined product, and the first end face and the second end face are located at the two ends of the to-be-machined product. The universal fixing clamp comprises a first fixing piece, a second fixing piece and a connecting piece. A part of the first fixing piece is used as a component for being attached to the first end face; the first fixing piece is provided with a convex part; at least part of the protruding part serves as a component used for being inserted into the inner hole. The second fixing piece is used as a component for being attached to the second end face; and the connecting piece is used as a component for connecting the convex part and the second fixing piece. By means of the arrangement, the fixing clamp can be suitable for a plurality of to-be-machined products of different shapes and sizes, and the universality of the fixing clamp is improved.

Description

Technical Field

[0001] This utility model relates to the field of cemented carbide manufacturing, specifically to a general-purpose fixing fixture. Background Technology

[0002] In modern industrial production, cemented carbide products are widely used in numerous fields due to their superior performance. Especially for complex, high-precision components, fine machining is often required before sintering to ensure the final product strictly meets design requirements. Turning and milling of the blank are key methods for shaping the blank, playing a crucial role in guaranteeing the quality and performance of cemented carbide products.

[0003] In the soft blank machining process, precise positioning and reliable clamping are indispensable steps. Currently, conventional clamping methods mainly include three-jaw chucks, four-jaw chucks, and mandrels. These traditional clamping methods can meet some clamping requirements to a certain extent, but they reveal some problems when faced with the characteristic of low strength of cemented carbide before sintering. Specifically, existing conventional clamping methods have obvious defects, as follows:

[0004] If the clamping force is insufficient, the blank may loosen during processing, leading to product scrap.

[0005] If the clamping force is too great, it will cause problems such as clamping cracks or chipping, which will also make the product scrap.

[0006] The fixtures have poor versatility and are cumbersome to operate, which not only increases processing costs but also reduces production efficiency.

[0007] Therefore, how to overcome the obvious defects of the conventional clamping method in the existing technology has become the research topic to be solved by this utility model. Utility Model Content

[0008] The purpose of this invention is to provide a universal fixing clamp.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A universal fixing fixture for fixing a product to be processed, wherein the product to be processed has a first end face and a second end face symmetrically arranged along the extension direction of the product to be processed and an inner hole penetrating the product to be processed, and the universal fixing fixture includes a first fixing member, a second fixing member and a connecting member;

[0011] A portion of the first fastener serves as a component for fitting the first end face;

[0012] The first fastener has a protruding portion; at least a portion of the protruding portion serves as a component for insertion into the inner hole;

[0013] The second fastener serves as a component for fitting the second end face;

[0014] The connector serves as a component for connecting the protruding portion and the second fixing member;

[0015] The universal fixing clamp is configured to have a fixed state:

[0016] In the fixed state, a portion of the first fixing member is attached to the first end face, and the second fixing member is attached to the second end face. The first fixing member and the second fixing member are connected by the connector to fix and clamp the product to be processed.

[0017] Along the extension direction of the product to be processed, the first end face and the second end face are located at both ends of the product to be processed.

[0018] In the above solution, when fixing the product to be processed, the first fixing member and the second fixing member are respectively attached to the first end face and the second end face to clamp and fix the product to be processed from both sides. The protruding part is inserted into the inner hole, and the connector connects the protruding part to the second fixing member to realize the connection between the first fixing member and the second fixing member, thereby stably achieving the clamping and fixing of the product to be processed.

[0019] The above settings can be applied to a variety of products with different shapes and sizes, improving the versatility of the fixing fixture. In the application process, the connecting part is set as a nut as an example. The size of the nut can be adjusted according to the actual situation.

[0020] The above settings ensure both reliability and ease of operation, thereby guaranteeing installation efficiency.

[0021] Compared to existing fixing methods, on the one hand, the contact area between the first fixing member and the first end face and the contact area between the second fixing member and the second end face are larger. Even under large clamping forces, the risk of deformation of the product to be processed can be reduced. For example, when the product to be processed is a soft blank required for the production of cemented carbide products, the risk of clamping cracks or chipping and resulting in scrap can be reduced. On the other hand, by adjusting the connecting parts, the clamping force of the first fixing member and the second fixing member on the product to be processed can be flexibly adjusted, reducing the risk of the product to be processed becoming loose due to insufficient clamping force. Loosening may lead to the scrapping of the product to be processed.

[0022] In a further technical solution, when the universal fixing clamp is in a fixed state, the protruding part is spaced apart from the second fixing member, and / or a portion of the second fixing member is engaged in the inner hole, and / or the outer peripheral surface of the protruding part is spaced apart from the hole wall of the inner hole.

[0023] When the universal fixing clamp is in a fixed state, the protruding part is positioned at a distance from the second fixing member. The effect is as follows: the size of the protruding part can be reduced along the extension direction of the inner hole, and the part that affects the second fixing member can be prevented from entering the inner hole.

[0024] When the universal fixing fixture is in a fixed state, part of the second fixing member is engaged in the inner hole, with the following effect: the product to be processed can be fixed in the horizontal direction, enhancing the fixing effect.

[0025] When the general-purpose fixing fixture is in a fixed state, the distance between the protrusion and the wall of the inner hole is set, which has the following effect: the size of the protrusion can be reduced radially along the inner hole, and the protrusion can also prevent the product to be processed from fitting with the first fixing part.

[0026] In a further technical solution, the protruding part is provided with a first threaded hole for the connector to be inserted, the second fixing part is provided with a second threaded hole for the connector to be inserted, and the connector is configured as a screw.

[0027] This section uses a threaded connection to achieve a detachable connection between the protruding part and the second fixing member, which is convenient and quick. Simply put, the connector passes through the second fixing member and is threadedly connected to the protruding part.

[0028] In a further technical solution, the longitudinal section of the inner hole is tapered;

[0029] The universal fixing fixture also includes a first positioning component, which serves as a mechanism for automatically positioning the product to be processed through a region with a tapered longitudinal section on the inner hole.

[0030] In some technical solutions, the inner hole is a stepped hole with a stepped surface, and the first positioning component serves as a positioning mechanism for abutting against the stepped surface of the stepped hole. The wall portion of the region in the inner hole with a tapered longitudinal section can be considered as a stepped surface; in this case, the first positioning component serves as a positioning mechanism for abutting against the stepped surface of the stepped hole.

[0031] During the process of the first end face being attached to the first fixing member, the first positioning component automatically adjusts the position of the product to be processed in the horizontal direction. This automatic positioning prepares the product for subsequent precise processing.

[0032] In a further technical solution, the first positioning component includes a first positioning member and a first elastic member, both of which are sleeved on the outside of the protruding portion;

[0033] The first positioning element has a tapered structure and serves as a component for automatically positioning the product to be processed through a tapered area on the inner hole; the first positioning element can move along the extension direction of the inner hole.

[0034] One end of the first elastic member acts on the protruding portion and the other end acts on the first positioning member. The first elastic member has an elastic force that always faces the second fixing member and acts on the first positioning member to cause the first positioning member to press against the product to be processed.

[0035] In some technical solutions, the first elastic element may not be sleeved on the outside of the protrusion. In this case, the first elastic element may be set on the side of the protrusion.

[0036] During the process of the first end face fitting with the first fixing member, the tapered area of ​​the longitudinal section on the inner hole fits with the first positioning member. Due to the shape of both, the first positioning member will guide the product to be processed to adjust its position in the horizontal direction, which is equivalent to a centering process, so that the product to be processed can accurately enter the processing area. Based on this, the universality of this application can be guaranteed.

[0037] The first positioning member can move along the extension direction of the inner hole. It is not stationary, but its position is adjusted vertically by the pressure of the product to be processed and the elastic force of the first elastic member. This avoids affecting the fit between the product to be processed and the first fixing member. Based on this, the universality of this application can be guaranteed.

[0038] In a further technical solution, the first elastic element is configured as a spring structure.

[0039] The first elastic element can be configured as a compression spring to provide a continuous elastic force to the first positioning element so as to cause the first positioning element to press against the product to be processed.

[0040] In a further technical solution, the longitudinal section of the inner hole is square;

[0041] The universal fixing fixture also includes a second positioning component, which serves as a mechanism for automatically positioning the product to be processed through a square-shaped area on the longitudinal section of the inner hole.

[0042] In some technical solutions, the square-shaped portion of the longitudinal section of the inner hole is located at the end of the inner hole near the first end face.

[0043] During the process of the first end face fitting with the first fixing component, the second positioning component works with the first positioning component to automatically adjust the position of the product to be processed in the horizontal direction. This automatic positioning prepares for the subsequent precise processing of the product to be processed, and the positioning accuracy is guaranteed by dual positioning.

[0044] In a further technical solution, the second positioning component includes a second positioning member and a second elastic member, both sleeved on the outside of the protruding portion;

[0045] The second positioning element serves as a component for automatically positioning the product to be processed through a square-shaped area on the longitudinal section of the inner hole; the second positioning element is movable along the extension direction of the inner hole.

[0046] The two sides of the longitudinal section of the second positioning member near the inner hole wall are inclined or bent to automatically position the product to be processed.

[0047] One end of the second elastic member acts on the protruding portion and the other end acts on the second positioning member. The second elastic member has an elastic force that always faces the second fixing member and acts on the second positioning member to cause the second positioning member to press against the product to be processed.

[0048] In some technical solutions, the second elastic element may not be sleeved on the outside of the protrusion. In this case, the second elastic element may be set on the side of the protrusion.

[0049] During the process of the first end face fitting with the first fixing member, the square area of ​​the longitudinal section on the inner hole fits with the second positioning member. Due to the shape of both, the second positioning member will guide the product to be processed to adjust its position in the horizontal direction, which is equivalent to a centering process, so that the product to be processed can accurately enter the processing area. Based on this, the universality of this application can be guaranteed.

[0050] The second positioning member can move along the extension direction of the inner hole. It is not stationary, but its position is adjusted vertically by the pressure of the product to be processed and the elastic force of the second elastic member. This avoids affecting the fit between the product to be processed and the first fixing member. Based on this, the universality of this application can be guaranteed.

[0051] By changing the positions of the first and second positioning elements, various stepped holes and through holes can be clamped, especially for larger or longer products, making it highly versatile.

[0052] In a further technical solution, the second elastic element is configured as a spring structure.

[0053] The second elastic element can be configured as a compression spring (or a compression spring or compression spring structure) to provide a continuous elastic force to the second positioning element so that the second positioning element presses against the product to be processed.

[0054] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0055] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0056] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0057] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0058] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0059] The working principle and advantages of this utility model are as follows: When fixing the product to be processed, the first fixing member and the second fixing member respectively fit against the first end face and the second end face, realizing the clamping and fixing of the product to be processed from both sides. The protruding part is inserted into the inner hole, and the connecting member connects the protruding part to the second fixing member, realizing the connection between the first fixing member and the second fixing member, thereby stably clamping and fixing the product to be processed. With the above settings, it can be applied to several products to be processed with different shapes and sizes, improving the versatility of the fixing fixture; in addition, while ensuring the reliability of fixing, the operation is also relatively simple, thus ensuring the fixing efficiency. Compared to existing fixing methods, on the one hand, the contact area between the first fixing member and the first end face and the contact area between the second fixing member and the second end face are larger. Even under large clamping forces, the risk of deformation of the product to be processed can be reduced. For example, when the product to be processed is a soft blank required for the production of cemented carbide products, the risk of clamping cracks or chipping and resulting in scrap can be reduced. On the other hand, by adjusting the connecting parts, the clamping force of the first fixing member and the second fixing member on the product to be processed can be flexibly adjusted, reducing the risk of the product to be processed becoming loose due to insufficient clamping force. Loosening may lead to the scrapping of the product to be processed. Attached Figure Description

[0060] Figure 1 This is a cross-sectional view of the general-purpose fixing clamp according to an embodiment of the present utility model.

[0061] In the above figures: 1. Product to be processed; 11. First end face; 12. Second end face; 13. Inner hole; 2. First fixing member; 21. Protruding part; 3. Second fixing member; 4. Connecting member; 5. First positioning assembly; 51. First positioning member; 52. First elastic member; 6. Second positioning assembly; 61. Second positioning member; 62. Second elastic member. Detailed Implementation

[0062] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0063] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0064] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0065] See Figure 1 A universal fixing fixture for fixing a product 1 to be processed, wherein the product 1 to be processed has a first end face 11 and a second end face 12 symmetrically arranged along the extension direction of the product 1 to be processed and an inner hole 13 penetrating the product 1 to be processed, and the universal fixing fixture includes a first fixing member 2, a second fixing member 3 and a connecting member 4.

[0066] A portion of the first fastener 2 serves as a component for fitting the first end face 11;

[0067] The first fastener 2 has a protrusion 21; at least a portion of the protrusion 21 serves as a component for insertion into the inner hole 13;

[0068] The second fastener 3 serves as a component for fitting the second end face 12;

[0069] The connector 4 serves as a component for connecting the protruding portion 21 and the second fixing member 3;

[0070] The universal fixing clamp is configured to have a fixed state:

[0071] In the fixed state, part of the first fixing member 2 is attached to the first end face 11, and the second fixing member 3 is attached to the second end face 12. The first fixing member 2 and the second fixing member 3 are connected by the connector 4.

[0072] It should be emphasized here that this application can be used for soft blanks of complex cemented carbide products, but the target objects are not limited to this.

[0073] When fixing the product to be processed 1, the first fixing member 2 and the second fixing member 3 are respectively attached to the first end face 11 and the second end face 12 to clamp and fix the product to be processed 1 from both sides. The protruding part 21 is inserted into the inner hole 13, and the connecting member 4 connects the protruding part 21 with the second fixing member 3 to realize the connection between the first fixing member 2 and the second fixing member 3, thereby stably achieving the clamping and fixing of the product to be processed 1.

[0074] The above settings can be applied to several products 1 with different shapes and sizes, improving the versatility of the fixing fixture. In the application process, the connecting part 4 is set as a nut for example. The size of the nut can be adjusted according to the actual situation.

[0075] The above settings ensure both reliability and ease of operation, thereby guaranteeing installation efficiency.

[0076] Compared to existing fixing methods, on the one hand, the contact area between the first fixing member 2 and the first end face 11 and the contact area between the second fixing member 3 and the second end face 12 are larger. Even under large clamping force, the risk of deformation of the product to be processed 1 can be reduced. For example, when the product to be processed 1 is a soft blank required for the production of cemented carbide products, the risk of clamping cracks or chipping and resulting in scrap can be reduced. On the other hand, by adjusting the connecting member 4, the clamping force of the first fixing member 2 and the second fixing member 3 on the product to be processed 1 can be flexibly adjusted, reducing the risk of the product to be processed 1 becoming loose due to insufficient clamping force. Loosening may lead to the scrapping of the product to be processed 1.

[0077] It should be noted that, for ease of understanding, the product to be processed 1 can be regarded as a soft blank required for the production of cemented carbide products.

[0078] It should be emphasized that when fixing the product to be processed 1, the product to be processed 1 can be placed vertically or horizontally. This application describes it as being placed vertically.

[0079] It should also be emphasized that the first fixing part 2 needs to be connected to the processing equipment (such as lathe chuck, milling machine table) during use. By changing the interface on the first fixing part 2 to match various equipment, it can be easily matched with lathes, worktables, etc., and has strong applicability.

[0080] In this embodiment, when the universal fixing clamp is in a fixed state, the protruding part 21 is spaced apart from the second fixing member 3, and / or a portion of the second fixing member 3 is engaged in the inner hole 13, and / or the protruding part 21 is spaced apart from the hole wall of the inner hole 13.

[0081] When the universal fixing clamp is in a fixed state, the protrusion 21 is positioned at a distance from the second fixing member 3. The effect is as follows: the size of the protrusion 21 can be reduced along the extension direction of the inner hole 13, and the part that affects the second fixing member 3 can be prevented from entering the inner hole 13.

[0082] When the general-purpose fixing fixture is in a fixed state, part of the second fixing member 3 is engaged in the inner hole 13, with the following effect: the product to be processed 1 can be fixed in the horizontal direction, enhancing the fixing effect.

[0083] When the general-purpose fixing fixture is in a fixed state, the protrusion 21 is positioned at a distance from the wall of the inner hole 13. The effect is as follows: the size of the protrusion 21 can be reduced radially along the inner hole 13, and the protrusion 21 can also prevent the product to be processed 1 from being attached to the first fixing member 2.

[0084] In this embodiment, the protruding part 21 is provided with a first threaded hole for the connector 4 to be inserted, and the second fixing part 3 is provided with a second threaded hole for the connector 4 to be inserted. The connector 4 is configured as a screw.

[0085] In this embodiment, a threaded connection is used to achieve a detachable connection between the protruding part 21 and the second fixing member 3, which is convenient and quick.

[0086] In this embodiment, the longitudinal section of a portion of the inner hole 13 is tapered;

[0087] The universal fixing fixture also includes a first positioning component 5, which serves as a mechanism for automatically positioning the product 1 to be processed through the tapered area on the longitudinal section of the inner hole 13.

[0088] Optionally, the region with a tapered longitudinal section on the inner hole 13 has a conical structure.

[0089] Optionally, the region with a tapered longitudinal section on the inner hole 13 is located in the middle of the inner hole 13.

[0090] Optionally, the inner hole 13 is a stepped hole with a stepped surface. The wall of the region in the inner hole 13 with a tapered longitudinal section can be regarded as a stepped surface. In this case, the first positioning component 5 serves as a positioning mechanism for abutting against the stepped surface of the stepped hole.

[0091] During the process of the first end face 11 being attached to the first fixing member 2, the first positioning component 5 automatically adjusts the position of the product to be processed 1 in the horizontal direction. This automatic positioning prepares for the subsequent precise processing of the product to be processed 1.

[0092] In this embodiment, the first positioning component 5 includes a first positioning member 51 and a first elastic member 52, both of which are sleeved on the outside of the protrusion 21.

[0093] The first positioning element 51 has a tapered structure and serves as a component for automatically positioning the product 1 to be processed through the tapered area (which can also be described as the stepped surface) on the inner hole 13; the first positioning element 51 can move along the extending direction of the inner hole 13.

[0094] One end of the first elastic member 52 acts on the protruding portion 21 and the other end acts on the first positioning member 51. The first elastic member 52 has an elastic force that always faces the second fixing member 3 and acts on the first positioning member 51 to cause the first positioning member 51 to press against the product 1 to be processed.

[0095] Optionally, the shape and size of the first positioning element 51 are adapted to the shape and size of the region with a tapered longitudinal section on the inner hole 13.

[0096] In some embodiments, the first elastic member 52 may not be sleeved on the outside of the protrusion 21. In this case, the first elastic member 52 may be disposed on the side of the protrusion 21. The second elastic member 62 described below refers to this description.

[0097] During the process of the first end face 11 and the first fixing member 2 being fitted together, the tapered area of ​​the longitudinal section of the inner hole 13 is fitted together with the first positioning member 51. Due to the shape setting of the two, the first positioning member 51 will guide the product to be processed 1 to adjust its position in the horizontal direction, which is equivalent to performing a centering process, so that the product to be processed 1 can accurately enter the processing area later. Based on this, the universality of this application can be guaranteed.

[0098] The first positioning member 51 can move along the extension direction of the inner hole 13. It is not stationary, but its position is adjusted vertically by the pressure of the product to be processed 1 and the elastic force of the first elastic member 52. This avoids affecting the fit between the product to be processed 1 and the first fixing member 2. Based on this, the universality of this application can be guaranteed.

[0099] In this embodiment, the first elastic element 52 is configured as a spring structure.

[0100] The first elastic element 52 can be configured as a compression spring to provide a continuous elastic force to the first positioning element 51 so as to cause the first positioning element 51 to press against the product 1 to be processed.

[0101] In this embodiment, the longitudinal section of the inner hole 13 is square;

[0102] The universal fixing fixture also includes a second positioning component 6, which serves as a mechanism for automatically positioning the product 1 to be processed through a square-shaped area on the inner hole 13.

[0103] In some embodiments, the portion of the inner hole 13 with a square longitudinal section is located at the end of the inner hole 13 near the first end face 11.

[0104] Optionally, the area with a square longitudinal section on the inner hole 13 has a cylindrical structure.

[0105] Optionally, the square-shaped region on the longitudinal section of the inner hole 13 is located on the side away from the tapered region on the longitudinal section of the inner hole 13.

[0106] The second positioning component 6 can be used alone or in conjunction with the first positioning component 5. The process and effect of using the second positioning component 6 alone are described in the above description of the first positioning component 5. The following description is based on the use of both components together.

[0107] During the process of the first end face 11 fitting with the first fixing member 2, the second positioning component 6 cooperates with the first positioning component 5 to automatically adjust the position of the product to be processed 1 in the horizontal direction. This automatic positioning prepares for the subsequent precise processing of the product to be processed 1, and the positioning accuracy is guaranteed by dual positioning.

[0108] In this embodiment, the second positioning component 6 includes a second positioning member 61 and a second elastic member 62, both of which are sleeved on the outside of the protrusion 21.

[0109] The second positioning member 61 serves as a component for automatically positioning the product 1 to be processed through a square-shaped area on the inner hole 13; the second positioning member 61 can move along the extending direction of the inner hole 13.

[0110] The two sides of the longitudinal section of the second positioning member 61 near the hole wall of the inner hole 13 are inclined or bent to automatically position the product 1 to be processed.

[0111] One end of the second elastic member 62 acts on the protruding portion 21 and the other end acts on the second positioning member 61. The second elastic member 62 has an elastic force that always faces the second fixing member 3 and acts on the second positioning member 61 to cause the second positioning member 61 to press against the product 1 to be processed.

[0112] Optionally, the longitudinal section of the second positioning element 61 is approximately an isosceles trapezoid.

[0113] During the process of the first end face 11 and the first fixing member 2 being fitted together, the square area on the longitudinal section of the inner hole 13 is fitted together with the second positioning member 61. Due to the shape setting of the two, the second positioning member 61 will guide the product to be processed 1 to adjust its position in the horizontal direction, which is equivalent to performing a centering process, so that the product to be processed 1 can accurately enter the processing area later. Based on this, the universality of this application can be guaranteed.

[0114] The second positioning member 61 can move along the extension direction of the inner hole 13. It is not stationary, but its position is adjusted vertically by the pressure of the product to be processed 1 and the elastic force of the second elastic member 62. This avoids affecting the fit between the product to be processed 1 and the first fixing member 2. Based on this, the universality of this application can be guaranteed.

[0115] By changing the positions of the first positioning element 51 and the second positioning element 61, various stepped holes and through holes can be clamped, especially for larger or longer products, making it highly adaptable.

[0116] Taking cemented carbide blanks as an example, the dimensions of different batches are not consistent. The larger the size, the greater the fluctuation. The conventional approach is to process mandrels of multiple specifications. This application, due to the use of tapered positioning, can achieve a clamping range of 20mm, thereby realizing the clamping of cemented carbide blanks of different batches and different specifications of the same model. At the same time, the positioning accuracy is high, with a repeatability of less than 0.1. Furthermore, this application can be adapted to cemented carbide blanks with different shrinkage coefficients.

[0117] In this embodiment, the second elastic element 62 is configured as a spring structure.

[0118] The second elastic element 62 can be configured as a compression spring to provide a continuous elastic force to the second positioning element 61 so as to cause the second positioning element 61 to press against the product 1 to be processed.

[0119] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A universal fixing fixture for fixing a product (1) to be processed, wherein the product (1) to be processed has a first end face (11) and a second end face (12) located at both ends thereon and an inner hole (13) penetrating the product (1) along the extending direction of the product (1); characterized in that: The universal fixing clamp includes a first fixing member (2), a second fixing member (3), and a connecting member (4); A portion of the first fastener (2) serves as a component for fitting the first end face (11); The first fastener (2) has a protrusion (21); at least a portion of the protrusion (21) serves as a component for insertion into the inner hole (13); The second fastener (3) serves as a component for fitting the second end face (12); The connector (4) serves as a component for connecting the protruding portion (21) and the second fixing member (3); The universal fixing clamp is configured to have a fixed state: In the fixed state, the first fixing member (2) is attached to the first end face (11), and the second fixing member (3) is attached to the second end face (12). The first fixing member (2) and the second fixing member (3) are connected by the connector (4) to fix and clamp the product to be processed (1).

2. The universal fixing clamp according to claim 1, characterized in that: When the universal fixing clamp is in a fixed state, the protruding part (21) is spaced apart from the second fixing member (3), and / or part of the second fixing member (3) is engaged in the inner hole (13), and / or the outer peripheral surface of the protruding part (21) is spaced apart from the hole wall of the inner hole (13).

3. The universal fixing clamp according to claim 1, characterized in that: The connector (4) is configured as a screw, and the connector (4) passes through the second fixing member (3) and is threadedly connected to the protrusion (21).

4. The universal fixing clamp according to claim 1, characterized in that: The inner hole (13) is a stepped hole; The universal fixing fixture also includes a first positioning component (5), which serves as a positioning mechanism for abutting against the step surface of the step hole.

5. The universal fixing clamp according to claim 4, characterized in that: The first positioning component (5) includes a first positioning element (51) and a first elastic element (52); The first positioning member (51) is sleeved on the protruding part (21) and can move along the extension direction of the protruding part (21); The first elastic element (52) acts on the first positioning element (51) so that the first positioning element (51) abuts against the step surface of the step hole.

6. The universal fixing clamp according to claim 5, characterized in that: The first positioning member (51) is provided with a tapered surface that mates with the step surface of the step hole. The tapered surface guides and mates with the step surface of the step hole, and can automatically center itself.

7. The universal fixing clamp according to claim 5, characterized in that: The first elastic element (52) is configured as a compression spring, and the two ends of the compression spring act between the protruding part (21) and the first positioning element (51).

8. The universal fixing clamp according to any one of claims 1-7, characterized in that: The universal fixing fixture also includes a second positioning component (6), which serves as a mechanism for automatically centering the end of the inner hole (13) near the first end face (11).

9. The universal fixing clamp according to claim 8, characterized in that: The second positioning component (6) includes a second positioning element (61) and a second elastic element (62). The second positioning member (61) is sleeved on the protruding part (21) and can move along the extension direction of the protruding part (21), and has a tapered surface that mates with the edge of the inner hole (13). The second elastic element (62) acts on the second positioning element (61) so that the second positioning element (61) contacts and engages with the edge of the inner hole (13).

10. The universal fixing clamp according to claim 9, characterized in that: The second elastic element (62) is configured as a compression spring structure, and the two ends of the compression spring structure act between the protruding part (21) and the second positioning element (61).

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