Positioning clamp

Abstract

According to the positioning clamp, an operator adjusts the positions of the two sets of clamping components according to the size of the gold bracelet, so that each set of first clamping assembly abuts against the inner ring of the gold bracelet, and the first abutting cambered surface is tightly attached to the surface of the inner ring. Meanwhile, the second clamping assembly abuts against the outer ring, and the second abutting arc face is tightly attached to the surface of the outer ring. And the gold bracelet is fixed in the two clamping spaces, so that the gold bracelet is more firmly fixed on the positioning clamp in the engraving process. And through the first abutting arc surface and the second abutting arc surface, the contact area with the gold bracelet is increased, so that the stability and accuracy during clamping are improved.

Description

Technical Field

[0001] This application relates to the field of metal clamping, and particularly to a positioning fixture. Background Art

[0002] When engraving a gold bracelet, first select an engraving tool, then fix the gold bracelet with a positioning fixture, then use a marking tool to design a contour on the gold bracelet, and finally use the engraving tool to engrave to process the surface of the gold bracelet.

[0003] When engraving manually, a bench vise is often used for fixing. However, there are the following problems when using a bench vise for fixing. Since the gold bracelet is circular, during the process of fixing it to the bench vise, the gold bracelet needs to be fixed on the bench vise, and the bench vise will form a line contact with the gold bracelet, resulting in a small contact area during engraving, making it unstable during engraving, thus affecting the engraving of the gold bracelet. Utility Model Content

[0004] In view of this, it is necessary to provide a positioning fixture to solve the above problems.

[0005] An embodiment of this application provides a positioning fixture, including:

[0006] A fixing plate provided with an installation plane;

[0007] At least two groups of clamping members, each group of the clamping members includes a first clamping component and a second clamping component. The first clamping component is arranged on the fixing plate and can expand and contract relative to the installation plane. The first clamping component is provided with a first abutting arc surface. The second clamping component is arranged on the fixing plate and can expand and contract relative to the installation plane. The second clamping component is provided with a second abutting arc surface. A clamping space is formed between the first clamping component and the second clamping component. The first abutting arc surface and the second abutting arc surface are located in the clamping space. The two groups of clamping members are symmetrically arranged on the fixing plate;

[0008] Wherein, adjust the two groups of clamping members so that the first clamping component of each group abuts against the inner ring of the gold bracelet, the first abutting arc surface fits with the inner ring surface of the gold bracelet, the second clamping component abuts against the outer ring of the gold bracelet, and the second abutting arc surface fits with the outer ring surface of the gold bracelet, so as to fix the gold bracelet in the two clamping spaces.

[0009] In at least one embodiment of this application, the fixing plate is provided with a first through groove along a first direction, and the fixing plate is provided with a second through groove along a second direction;

[0010] One end of the first clamping assembly is located on one side of the fixed plate, and the other end penetrates through the first through groove and extends to the other side of the fixed plate to abut against the fixed plate;

[0011] One end of the second clamping assembly is located on one side of the fixed plate, and the other end penetrates through the second through groove and extends to the other side of the fixed plate to abut against the fixed plate;

[0012] The first clamping assembly can move in the first through groove along the first direction, and the second clamping assembly can move in the second through groove along the second direction to adjust the relative positions of the first clamping assembly and the second clamping assembly to match gold bracelets with different diameters or thicknesses.

[0013] In at least one embodiment of the present application, the first direction and the second direction are arranged in parallel.

[0014] In at least one embodiment of the present application, the first direction and the second direction are arranged perpendicular to each other.

[0015] In at least one embodiment of the present application, the two first clamping assemblies and the two second clamping assemblies are arranged in a quadrilateral shape on the fixed plate.

[0016] In at least one embodiment of the present application, the first clamping assembly includes:

[0017] A first clamping member having a first knob portion, a first abutting portion provided at one end of the first knob portion, and a first threaded portion provided at one end of the first abutting portion away from the first knob portion. The first knob portion is located on one side of the fixed plate, the first threaded portion penetrates through the first through groove and extends to the other side of the fixed plate, and the first abutting arc surface is located on the first knob portion;

[0018] A first adjusting nut provided on the side of the fixed plate away from the first knob portion, and the first threaded portion is threadedly connected to the first adjusting nut.

[0019] In at least one embodiment of the present application, the second clamping assembly includes:

[0020] A second clamping member having a second knob portion, a second abutting portion provided at one end of the second knob portion, and a second threaded portion provided at one end of the second abutting portion away from the second knob portion. The second knob portion is located on one side of the fixed plate, the second threaded portion penetrates through the second through groove and extends to the other side of the fixed plate, and the second abutting arc surface is located on the second knob portion;

[0021] The second adjusting nut is provided on the side of the fixed plate away from the second knob portion, and the second threaded portion is threadedly connected to the second adjusting nut.

[0022] In at least one embodiment of the present application, the positioning fixture further includes:

[0023] A first washer, the first abutting portion penetrates through the first washer, the first washer is located on the side close to the first knob portion, a third abutting arc surface is provided on the side of the first washer close to the first abutting arc surface, and the third abutting arc surface is disposed opposite to the first abutting arc surface;

[0024] A second washer, the second abutting portion penetrates through the second washer, the second washer is located on the side close to the second knob portion, a fourth abutting arc surface is provided on the side of the second washer close to the second abutting arc surface, and the fourth abutting arc surface is disposed opposite to the second abutting arc surface.

[0025] In at least one embodiment of the present application, the first abutting arc surface and the second abutting arc surface are located on the same side of the fixed plate.

[0026] In at least one embodiment of the present application, a rotating portion is convexly provided on the side of the fixed plate away from the mounting plane;

[0027] The positioning fixture further includes:

[0028] A fixed bracket, one end of which is hinged to the rotating portion.

[0029] Implementing the positioning fixture of this embodiment will at least have the following beneficial effects:

[0030] For the positioning fixture provided above, the operator adjusts the positions of the two sets of clamping members according to the size of the gold bracelet, so that the first clamping assembly of each group abuts against the inner ring of the gold bracelet, and the first abutting arc surface is in close contact with the inner ring surface. At the same time, the second clamping assembly abuts against the outer ring, and the second abutting arc surface is in close contact with the outer ring surface.

[0031] The gold bracelet is fixed in the two clamping spaces, so that the gold bracelet is more firmly fixed on the positioning fixture during the engraving process.

[0032] The contact area with the gold bracelet is increased through the first abutting arc surface and the second abutting arc surface, thereby improving the stability and accuracy during clamping. Description of the Drawings

[0033] Figure 1 Is a perspective view of the positioning fixture in the present utility model;

[0034] Figure 2 Is Figure 1 The exploded view of the positioning fixture in

[0035] Figure 3 is Figure 1 Another perspective three-dimensional view of the positioning fixture in

[0036] Figure 4 is Figure 1 Reference view of the usage state of the positioning fixture in

[0037] Figure 5 is Figure 2 Three-dimensional view of some structures in

[0038] Description of main component symbols

[0039] 100, positioning fixture;

[0040] 110, fixing plate; 110a, mounting plane; 110b, first through slot; 110c, second through slot; A, first direction; B, second direction; 111, rotating part;

[0041] 120, clamping member; 121, first clamping assembly; 121a, first abutting arc surface; 1211, first clamping piece; 1212, first knob part; 1213, first abutting part; 1214, first thread part; 123, first adjusting nut;

[0042] 122, second clamping assembly; 122a, second abutting arc surface; 1221, second clamping piece; 1222, second knob part; 1223, second abutting part; 1224, second thread part; 124, second adjusting nut;

[0043] 130, first washer; 130a, third abutting arc surface;

[0044] 140, second washer; 140a, fourth abutting arc surface;

[0045] 150, fixing bracket;

[0046] 160, gold bracelet. Detailed implementation manners

[0047] Next, embodiments of the present application will be described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0048] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present at the same time. When a component is considered to be "provided on" another component, it can be directly provided on the other component or there may be an intermediate component present at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "rear", and similar expressions used herein are for illustrative purposes only.

[0049] The following will, with reference to the accompanying drawings, elaborate on some embodiments of the present application. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0050] An embodiment of the present application provides a positioning fixture 100, including:

[0051] A fixing plate 110, provided with a mounting plane 110a;

[0052] At least two groups of clamping members 120, each group of the clamping members 120 includes a first clamping component 121 and a second clamping component 122. The first clamping component 121 is provided on the fixing plate 110 and is telescopic relative to the mounting plane 110a. The first clamping component 121 is provided with a first abutting arc surface 121a. The second clamping component 122 is provided on the fixing plate 110 and is telescopic relative to the mounting plane 110a. The second clamping component 122 is provided with a second abutting arc surface 122a. A clamping space is formed between the first clamping component 121 and the second clamping component 122. The first abutting arc surface 121a and the second abutting arc surface 122a are located in the clamping space. The two groups of clamping members 120 are symmetrically arranged on the fixing plate 110;

[0053] Wherein, the two groups of clamping members 120 are adjusted so that the first clamping component 121 of each group abuts against the inner ring of the gold bracelet 160, the first abutting arc surface 121a fits against the inner ring surface of the gold bracelet 160, the second clamping component 122 abuts against the outer ring of the gold bracelet 160, and the second abutting arc surface 122a fits against the outer ring surface of the gold bracelet 160, so as to fix the gold bracelet 160 in the two clamping spaces.

[0054] Please refer to Figures 1-5 , in this embodiment, the operator adjusts the positions of the two groups of clamping members 120 according to the size of the gold bracelet 160, so that the first clamping component 121 of each group abuts against the inner ring of the gold bracelet 160, and the first abutting arc surface 121a closely fits against the inner ring surface. At the same time, the second clamping component 122 abuts against the outer ring, and the second abutting arc surface 122a closely fits against the outer ring surface.

[0055] The gold bracelet 160 is fixed within two clamping spaces, enabling the gold bracelet 160 to be more firmly fixed on the positioning fixture 100 during the engraving process.

[0056] The first abutting arc surface 121a and the second abutting arc surface 122a increase the contact area with the gold bracelet 160, thereby enhancing the stability and accuracy during clamping.

[0057] The first abutting arc surface 121a is an outwardly convex arc surface and is made of a flexible material, such as silica gel, rubber, etc., for generating frictional force.

[0058] The second abutting arc surface 122a has the same material and formation as the first abutting arc surface 121a.

[0059] The fixing plate 110 is the main structure of the positioning fixture 100, and an installation plane 110a is provided thereon. The installation plane 110a provides a reference plane for the installation of other components, ensuring the stability and symmetry of the overall device. The fixing plate 110 is a rectangular plate, and the installation plane 110a is a plane on one side of the fixing plate 110.

[0060] Each set of clamping members 120 includes a first clamping assembly 121 and a second clamping assembly 122. Both of these assemblies can be telescoped along the installation plane 110a (in a direction perpendicular to the installation plane 110a), that is, their positions can be adjusted to accommodate gold bracelets 160 of different sizes.

[0061] The first abutting arc surface 121a and the second abutting arc surface 122a: The first abutting arc surface 121a and the second abutting arc surface 122a are used to contact the inner and outer ring surfaces of the gold bracelet 160, ensuring a large contact area and enhancing the stability and accuracy. Since both the first abutting arc surface 121a and the second abutting arc surface 122a are designed as convex arc surfaces, a tight connection is formed during the contact with the gold bracelet 160. If a concave setting is adopted, there will be a gap between the gold bracelet 160 and the concave portion, resulting in instability.

[0062] The clamping space formed between the first and second clamping assemblies 122 is used to place the gold bracelet 160. Due to the symmetrical arrangement of the clamping assemblies, the stability of the gold bracelet 160 during processing can be ensured.

[0063] In at least one embodiment of the present application, the fixing plate 110 is provided with a first through groove 110b along the first direction A, and the fixing plate 110 is provided with a second through groove 110c along the second direction B;

[0064] One end of the first clamping assembly 121 is located on one side of the fixing plate 110, and the other end passes through the first through groove 110b and extends to the other side of the fixing plate 110 to abut against the fixing plate 110;

[0065] One end of the second clamping component 122 is located on the fixed side, and the other end penetrates through the second through groove 110c and extends to the other side of the fixing plate 110 to abut against the fixing plate 110.

[0066] The first clamping component 121 can move in the first through groove 110b along the first direction A, and the second clamping component 122 can move in the second through groove 110c along the second direction B to adjust the relative positions of the first clamping component 121 and the second clamping component 122 to match gold bracelets 160 with different diameters or thicknesses. In at least one embodiment of the present application, the first direction A and the second direction B are arranged in parallel.

[0067] In at least one embodiment of the present application, the first direction A and the second direction B are arranged perpendicular to each other.

[0068] Please refer to Figures 1-5 , in this embodiment, when it is necessary to fix gold bracelets 160 with different diameters or thicknesses, the operator can move the first clamping component 121 and the second clamping component 122 along the first through groove 110b and the second through groove 110c. By adjusting the positions of these components, the size of the clamping space can be changed to ensure precise fitting with the gold bracelet 160.

[0069] The first direction A and the second direction B can be arranged in parallel, which helps to symmetrically adjust the clamping points and is applicable to certain specific-shaped articles, such as strip-shaped metals.

[0070] The applicable range of the fixture is increased, and it can adapt to various gold bracelets 160 with diameters ranging from small to large, providing stable clamping and support.

[0071] By precisely adjusting the positions of the clamping components, it can be ensured that the gold bracelet 160 remains stable during the processing or handling process, guaranteeing the processing quality and avoiding damage.

[0072] The first through groove 110b allows the first clamping component 121 to move along the length direction of the first through groove 110b, that is, the first direction A; the second through groove 110c allows the second clamping component 122 to move along the length direction of the second through groove 110c, that is, the second direction B.

[0073] The first clamping component 121 is located on one side of the fixing plate 110 and extends to the other side through the first through groove 110b and can move along the first direction A.

[0074] The second clamping component 122 is also located on one side of the fixing plate 110 and extends to the other side through the second through groove 110c and can move along the second direction B.

[0075] The first clamping component 121 and the second clamping component 122 can be adjusted independently to adapt to different sizes of the gold bracelet 160.

[0076] The first direction A and the second direction B are set perpendicular to each other, which can provide a wider adjustment range and stronger adaptability, especially suitable for gold bracelets 160 of different shapes and sizes.

[0077] In at least one embodiment of the present application, the fixing plate 110 is provided with a first through groove 110b along the first direction A, and the fixing plate 110 is provided with a second through groove 110c along the second direction B;

[0078] One end of the first clamping component 121 is located on one side of the fixing plate 110, and the other end penetrates through the first through groove 110b and extends to the other side of the fixing plate 110 to abut against the fixing plate 110;

[0079] One end of the second clamping component 122 is located on the fixed side, and the other end penetrates through the second through groove 110c and extends to the other side of the fixing plate 110 to abut against the fixing plate 110;

[0080] The first clamping component 121 can move along the first direction A within the first through groove 110b, and the second clamping component 122 can move along the second direction B within the second through groove 110c to adjust the relative positions of the first clamping component 121 and the second clamping component 122 to match gold bracelets 160 of different diameters or thicknesses.

[0081] In at least one embodiment of the present application, the first direction A and the second direction B are arranged in parallel.

[0082] Please refer to Figures 1-5 , in this embodiment, the operator adjusts the first clamping component 121 and the second clamping component 122 according to the size of the gold bracelet 160 to be fixed. The first through groove 110b allows the first clamping component 121 to move along the length direction of the first through groove 110b, that is, the first direction A; the second through groove 110c allows the second clamping component 122 to move along the length direction of the second through groove 110c, that is, the second direction B, and can very precisely adapt to the diameter and width of the gold bracelet 160.

[0083] Since the first clamping component 121 and the second clamping component 122 can be adjusted independently and move along two parallel directions, it is applicable to gold bracelets of various diameters and widths.

[0084] The design of the parallel directions ensures uniform distribution of force and reduces damage to the item or processing errors caused by improper clamping.

[0085] In at least one embodiment, the first direction A and the second direction B are set to be parallel. The parallel setting helps to evenly distribute the pressure and simplifies the structure, making the positioning fixture 100 more ideal for fixing long or rectangular objects.

[0086] In at least one embodiment of the present application, the two first clamping components 121 and the two second clamping components 122 are arranged in a quadrilateral shape on the fixing plate 110.

[0087] In this embodiment, during the clamping process, the first clamping component 121 and the second clamping component 122 can be independently adjusted according to the size of the object to be fixed to adapt to gold bracelets or other similar items of different sizes and shapes.

[0088] Through the quadrilateral configuration, the clamping force can be evenly applied to the object to be fixed from four different points, which helps to reduce the deformation or damage of the item caused by uneven forces.

[0089] The quadrilateral clamping method provides higher stability and uniform force distribution, and can effectively prevent the sliding or displacement of the item during the processing.

[0090] The quadrilateral setting allows the operator to adjust the position of each clamping point as needed to adapt to items of different shapes and sizes.

[0091] In this embodiment, the two first clamping components 121 and the two second clamping components 122 are arranged in a quadrilateral on the fixing plate 110. Each clamping component is located at a corner of the quadrilateral, relatively forming a balanced and symmetric structure.

[0092] In at least one embodiment of the present application, the first clamping component 121 includes:

[0093] A first clamping member 1211, having a first knob portion 1212, a first abutting portion 1213 provided at one end of the first knob portion 1212, and a first threaded portion 1214 provided at the end of the first abutting portion 1213 away from the first knob portion 1212. The first knob portion 1212 is located on one side of the fixing plate 110, the first threaded portion 1214 passes through the first through groove 110b and extends to the other side of the fixing plate 110, and the first abutting arc surface 121a is located on the first knob portion 1212;

[0094] A first adjusting nut 123, provided on the side of the fixing plate 110 away from the first knob portion 1212, and the first threaded portion 1214 is threadedly connected to the first adjusting nut 123.

[0095] Please refer to Figures 1-5, in this embodiment, when it is necessary to fix or adjust the object to be fixed (such as a gold bracelet), the operator first rotates the first knob portion 1212, and adjusts the position of the first abutting portion 1213 through the movement of the first threaded portion 1214 to make it approach or move away from the object to be fixed.

[0096] By rotating the first adjusting nut 123, the position of the first clamping member 1211 can be locked or unlocked, and the clamping force and clamping position can be precisely adjusted as needed.

[0097] The arc surface of the first abutting portion 1213 can reduce the risk of damage to the object to be fixed, while ensuring the stability of clamping, thereby improving the overall quality and safety of the processing process.

[0098] The first clamping member 1211 is columnar, and the first abutting portion 1213 is a smooth column for abutting against the inner surface of the gold bracelet.

[0099] The first knob portion 1212 is the operating part of the first clamping member 1211, and the operator can adjust the position of the first clamping member 1211 by rotating this part.

[0100] The first abutting portion 1213 is located at one end of the first knob portion 1212. This part directly contacts the object to be fixed and is designed as an arc surface to better adapt to the shape of the object to be fixed.

[0101] The first threaded portion 1214 is a threaded structure extending from the first abutting portion 1213, passing through the fixing plate 110 and extending to the other side thereof, for cooperating with the adjusting nut to achieve the fixing and adjustment of the clamping member.

[0102] The first adjusting nut 123 is provided on the side of the fixing plate 110 away from the first knob portion 1212 and is threadedly connected to the first threaded portion 1214. By rotating the adjusting nut, the telescopic movement of the first clamping member 1211 can be precisely controlled, thereby adjusting the clamping force on the object to be fixed.

[0103] In at least one embodiment of the present application, the second clamping assembly 122 includes:

[0104] A second clamping member 1221, having a second knob portion 1222, a second abutting portion 1223 provided at one end of the second knob portion 1222, and a second threaded portion 1224 provided at the end of the second abutting portion 1223 away from the second knob portion 1222. The second knob portion 1222 is located on one side of the fixing plate 110, the second threaded portion 1224 passes through the second through groove 110c and extends to the other side of the fixing plate 110, and the second abutting arc surface 122a is located on the second knob portion 1222;

[0105] The second adjusting nut 124 is provided on the side of the fixing plate 110 away from the second knob portion 1222, and the second threaded portion 1224 is threadedly connected to the second adjusting nut 124.

[0106] Please refer to Figures 1-5 , in this embodiment, when it is necessary to fix or adjust the object to be fixed, the operator rotates the second knob portion 1222, so that the second threaded portion 1224 moves along the second through groove 110c, and adjusts the distance between the second abutting portion 1223 and the object to be fixed.

[0107] By rotating the second adjusting nut 124, the second threaded portion 1224 is locked or released, so as to achieve precise control of the position of the second clamping member 1221, ensuring stability and precision during the processing.

[0108] So that the second clamping member 1221 can be precisely adjusted to the required position, providing a stable and uniform clamping force, reducing damage to the object to be fixed, and is particularly suitable for fine processing operations.

[0109] The second clamping member 1221 and the first clamping member 1211 are used in cooperation to allow adjustment within a large range, so that various sizes and shapes of objects can be adapted, making the positioning fixture 100 more applicable.

[0110] The second clamping member 1221 has the same shape as the first clamping member 1211.

[0111] The user adjusts the position of the second clamping member 1221 by rotating the second knob portion 1222, thereby changing the contact point with the object to be fixed.

[0112] The second abutting portion 1223 is located at one end of the second knob portion 1222, and its shape is usually an arc surface to better adapt to and abut against the outer surface of the object to be fixed.

[0113] The second threaded portion 1224 extends from the second abutting portion 1223, passes through the fixing plate 110 and extends to the other side thereof. The second threaded portion 1224 is used to cooperate with the second adjusting nut 124, so that the second clamping member 1221 can be fixed in place.

[0114] The second adjusting nut 124 is provided on the side of the fixing plate 110 away from the second knob portion 1222 and is threadedly connected to the second threaded portion 1224. The user locks or adjusts the position of the second clamping member 1221 by rotating the second adjusting nut 124, thereby precisely controlling the clamping force on the object to be fixed.

[0115] In at least one embodiment of the present application, the positioning fixture 100 further includes:

[0116] The first washer 130, the first abutting portion 1213 penetrates through the first washer 130, the first washer 130 is located on the side close to the first knob portion 1212, a third abutting arc surface 130a is provided on the side of the first washer 130 close to the first abutting arc surface 121a, and the third abutting arc surface 130a is disposed opposite to the first abutting arc surface 121a;

[0117] The second washer 140, the second abutting portion 1223 penetrates through the second washer 140, the second washer 140 is located on the side close to the second knob portion 1222, a fourth abutting arc surface 140a is provided on the side of the second washer 140 close to the second abutting arc surface 122a, and the fourth abutting arc surface 140a is disposed opposite to the second abutting arc surface 122a.

[0118] Please refer to Figures 1-5 , in this embodiment, during the clamping process, the first washer 130 and the second washer 140 provide additional contact points, and the third abutting arc surface 130a and the fourth abutting arc surface 140a are opposite to the corresponding first abutting arc surface 121a and the second abutting arc surface 122a respectively to provide a more stable clamping.

[0119] The operator adjusts the positions of the first clamping member 1211 and the second clamping member 1221 by adjusting the first knob portion 1212 and the second knob portion 1222. The third abutting arc surface 130a of the first washer 130 and the fourth abutting arc surface 140a of the second washer 140 ensure a wider contact area and a more uniform pressure distribution at the contact points, thereby improving the stability of the object to be clamped.

[0120] By adding the first washer 130 and the second washer 140 and providing the corresponding first abutting arc surface 121a and the second abutting arc surface 122a, the clamping force is made more uniform and stable, reducing the potential damage to the object to be clamped caused by pressure concentration.

[0121] The third and fourth abutting arc surfaces 140a increase the contact area with the object to be clamped, which helps to distribute the clamping force more evenly, can reduce the risk of damage to the clamped item, and can also prevent direct contact of the fixing plate 110 with the metal, thereby reducing wear and extending the service life of the device.

[0122] The first washer 130 is located around the first abutting portion 1213 and on the side close to the first knob portion 1212.

[0123] On the side close to the first abutting arc surface 121a, a third abutting arc surface 130a is provided. The third abutting arc surface 130a is used to be disposed opposite to the first abutting arc surface 121a to provide additional stability and abutting force.

[0124] The second washer 140 is located around the second abutting portion 1223, on the side close to the second knob portion 1222.

[0125] On the side close to the second abutting arc surface 122a, a fourth abutting arc surface 140a is provided. The fourth abutting arc surface 140a is disposed opposite to the second abutting arc surface 122a to enhance the clamping effect.

[0126] In at least one embodiment of the present application, the first abutting arc surface 121a and the second abutting arc surface 122a are located on the same side of the fixing plate 110.

[0127] Please refer to Figures 1-5 , in this embodiment, when it is necessary to fix an object, such as a gold bracelet, the first and second clamping components 122 will move from the same side of the fixing plate 110, so that the first abutting arc surface 121a and the second abutting arc surface 122a apply pressure to the object. This makes the clamping force more concentrated and uniform, reducing object damage or misalignment caused by unbalanced clamping force.

[0128] The operator can precisely control the positions of the first clamping component 121 and the second clamping component 122 by adjusting the first knob portion 1212 and the second knob portion 1222 according to the size and shape of the object to be clamped, ensuring that the abutting arc surfaces can effectively and safely contact the object surface.

[0129] Since the first abutting arc surface 121a and the second abutting arc surface 122a are located on the same side of the fixing plate 110, it helps to provide more stable support and more uniform pressure distribution. Especially when clamping vulnerable objects, it can significantly reduce the damage caused by uneven clamping.

[0130] In at least one embodiment of the present application, a rotating portion 111 protrudes from the side of the fixing plate 110 away from the mounting plane 110a;

[0131] The positioning fixture 100 further includes:

[0132] A fixed bracket 150, one end of which is hinged to the rotating portion 111.

[0133] Please refer to Figures 1-5 , in this embodiment, when using the positioning fixture 100, the fixed bracket 150 is connected to the fixing plate 110 through the rotating portion 111, and the user can adjust the position or angle of the bracket according to needs to adapt to different working environments and operation requirements.

[0134] The user can change the direction or position of the clamped object by rotating the fixed bracket 150, making the operation more flexible.

[0135] The combination of the rotating part 111 and the fixed bracket 150 provides an additional degree of freedom of movement, enabling the fixture to not only hold an object but also adjust the clamping direction or position when necessary.

[0136] The rotating part 111 is provided on the side of the fixing plate 110 away from the mounting plane 110a and protrudes. Allowing the rotating part 111 to provide a rotating or turning function, which is very useful for adjusting the direction or position of the fixture.

[0137] The fixed bracket 150 is hinged to the rotating part 111, and the fixed bracket 150 can rotate around the rotating part 111. Allowing the positioning fixture 100 to have greater flexibility and adjustability during operation.

[0138] The above are only the embodiments of the present application. It should be noted here that for those of ordinary skill in the art, improvements can be made without departing from the creative concept of the present application, but these all fall within the protection scope of the present application.

Claims

1. A positioning fixture, characterized in that, Comprising: A fixed plate provided with an installation plane; At least two groups of clamping members, each group of the clamping members including a first clamping assembly and a second clamping assembly. The first clamping assembly is arranged on the fixed plate and can expand and contract relative to the installation plane. The first clamping assembly is provided with a first abutting arc surface. The second clamping assembly is arranged on the fixed plate and can expand and contract relative to the installation plane. The second clamping assembly is provided with a second abutting arc surface. A clamping space is formed between the first clamping assembly and the second clamping assembly. The first abutting arc surface and the second abutting arc surface are located in the clamping space. The two groups of the clamping members are symmetrically arranged on the fixed plate; Wherein, the two groups of the clamping members are adjusted so that the first clamping assembly of each group abuts against the inner ring of the gold bracelet, the first abutting arc surface fits with the surface of the inner ring of the gold bracelet, the second clamping assembly abuts against the outer ring of the gold bracelet, and the second abutting arc surface fits with the surface of the outer ring of the gold bracelet, so as to fix the gold bracelet in the two clamping spaces.

2. The positioning fixture according to claim 1, wherein The fixed plate is provided with a first through groove along a first direction and a second through groove along a second direction; One end of the first clamping assembly is located on one side of the fixed plate, and the other end penetrates through the first through groove and extends to the other side of the fixed plate to abut against the fixed plate; One end of the second clamping assembly is located on one side of the fixed plate, and the other end penetrates through the second through groove and extends to the other side of the fixed plate to abut against the fixed plate; The first clamping assembly can move in the first through groove along the first direction, and the second clamping assembly can move in the second through groove along the second direction, so as to adjust the relative positions of the first clamping assembly and the second clamping assembly to match gold bracelets with different diameters or different thicknesses.

3. The positioning fixture according to claim 2, wherein, The first direction and the second direction are arranged in parallel.

4. The positioning fixture according to claim 2, wherein, The first direction and the second direction are arranged perpendicular to each other.

5. The positioning fixture according to claim 1, wherein The two first clamping assemblies and the two second clamping assemblies are arranged in a quadrilateral shape on the fixed plate.

6. The positioning fixture according to claim 2, wherein, The first clamping assembly includes: A first clamping member having a first knob portion, a first abutting portion provided at one end of the first knob portion, and a first threaded portion provided at one end of the first abutting portion away from the first knob portion. The first knob portion is located on one side of the fixed plate, the first threaded portion penetrates through the first through groove and extends to the other side of the fixed plate, and the first abutting arc surface is located on the first knob portion; A first adjusting nut arranged on the side of the fixed plate away from the first knob portion, and the first threaded portion is threadedly connected with the first adjusting nut.

7. The positioning fixture according to claim 6, characterized in that, The second clamping assembly includes: A second clamping member having a second knob portion, a second abutting portion provided at one end of the second knob portion, and a second threaded portion provided at one end of the second abutting portion away from the second knob portion. The second knob portion is located on one side of the fixed plate, the second threaded portion penetrates through the second through groove and extends to the other side of the fixed plate, and the second abutting arc surface is located on the second knob portion; A second adjusting nut is provided on a side of the fixed plate away from the second knob portion, and the second threaded portion is threadedly connected to the second adjusting nut.

8. The positioning fixture according to claim 7, characterized in that, The positioning fixture further includes: A first washer, the first abutting portion penetrates through the first washer, the first washer is located on a side close to the first knob portion, and a third abutting arc surface is provided on a side of the first washer close to the first abutting arc surface, and the third abutting arc surface is disposed opposite to the first abutting arc surface; A second washer, the second abutting portion penetrates through the second washer, the second washer is located on a side close to the second knob portion, and a fourth abutting arc surface is provided on a side of the second washer close to the second abutting arc surface, and the fourth abutting arc surface is disposed opposite to the second abutting arc surface.

9. The positioning fixture according to claim 1, characterized in that, The first abutting arc surface and the second abutting arc surface are located on the same side of the fixed plate.

10. The positioning fixture according to claim 1, wherein A rotating portion is protrudingly provided on a side of the fixed plate away from the mounting plane; The positioning fixture further includes: A fixed bracket, one end of which is hinged to the rotating portion.

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