Clamping tool for natural cooling of hot stamping part with soft area

Abstract

The utility model provides a clamping tool for naturally cooling a hot stamping part with a soft area. The clamping tool comprises a bottom plate, a supporting device assembled on the bottom plate, a fixing device and clamping devices arranged on the two sides of the fixing device. The clamping device comprises an X-direction clamping device, a Y-direction clamping device and a Z-direction clamping device; the X-direction clamping device comprises a plurality of pairs of X-direction clamping devices; the Z-direction clamping device comprises a plurality of pairs of Z-direction clamping devices; the X-direction clamping devices and the Z-direction clamping devices are arranged in two rows along a straight line at intervals; the Y-direction clamping device comprises a plurality of pairs of Y-direction clamping devices which are symmetrically arranged on the two sides of the X-direction clamping device. By arranging the fixing device and the three-way clamping devices on the two sides of the fixing device, the size precision of the part with the soft area obtained after natural cooling is high.

Description

Technical Field

[0001] The utility model relates to the technical field of hot stamping, in particular to a clamping tool with a soft zone for natural cooling of hot stamping parts. Background Art

[0002] At present, the use of lightweight materials such as high-strength hot stamping steel to replace traditional steel has become an important way to achieve lightweight automobiles. However, high-strength hot stamping parts have difficulty in riveting during body assembly and other processes due to the high hardness of the base material. In order to solve this problem, it is usually necessary to soften the connection position of the corresponding hot stamping parts to reduce the hardness of the material, which is conducive to riveting and does not affect the overall performance of the parts. At the same time, the softened area of ​​the hot stamping parts can also play a good energy absorption role in the event of a car collision, reducing the impact of the collision on the occupants of the car. Therefore, automotive hot stamping parts often need to be softened locally.

[0003] After the parts with soft zone are processed by hot forming mold, the ejection temperature of the soft zone is about 500℃ to ensure that austenite does not transform into martensite, while the temperature of the hard zone has dropped to 100℃~200℃ to completely transform austenite into martensite. At this time, there is still a certain temperature difference between the soft zone and the hard zone. The soft zone shrinks during the cooling process, and the size of the part will change, making it difficult to guarantee the size of the part, which brings cost problems.

[0004] Clamping fixtures are usually used to clamp objects and fix the position of objects. They mostly adopt the principle of lever-link self-locking, etc., and have the characteristics of improving production efficiency, simple operation, stable clamping force, etc. They are widely used in hardware, electronic and electrical manufacturing industries. In order to control the size of parts with soft areas and reduce the deformation caused by slow cooling of parts, it is necessary to develop clamping fixtures during the natural cooling process of parts. Utility Model Content

[0005] Due to the above defects in the prior art, the utility model provides a clamping tool for natural cooling of hot stamping parts with soft zones. By providing a fixing device and three-way clamping devices on both sides thereof, the dimensional accuracy of the parts with soft zones obtained after natural cooling is high.

[0006] To achieve the above-mentioned purpose, the utility model provides a clamping tool for natural cooling of hot stamping parts with a soft zone, comprising a base plate, a supporting device assembled on the base plate, and a fixing device, characterized in that it also includes clamping devices arranged on both sides of the fixing device; the clamping device includes an X-direction clamping device, a Y-direction clamping device and a Z-direction clamping device; the X-direction clamping device includes a plurality of pairs of X-direction clamps; the Z-direction clamping device includes a plurality of pairs of Z-direction clamps; the X-direction clamps and the Z-direction clamps are arranged in two rows along a straight line at intervals; the Y-direction clamping device includes a plurality of pairs of Y-direction clamps, which are symmetrically arranged on both sides of the X-direction clamping device.

[0007] When the clamping tooling is working, first open the fixing device, the X-axis clamping device, the Y-axis clamping device, and the Z-axis clamping device, place the part on the supporting device, then fix the part on the supporting device with the fixing device, and then close the Z-axis clamping device, the X-axis clamping device, and the Y-axis clamping device in sequence; after the part is completely cooled, open the Y-axis clamping device, the X-axis clamping device, the Z-axis clamping device, and the fixing device in sequence, and then remove the part.

[0008] Furthermore, the supporting device includes nine supporting seats arranged in a nine-square grid in the middle of the bottom plate.

[0009] Furthermore, the fixing device includes four fixers symmetrically arranged at two ends of the supporting device.

[0010] Furthermore, the X-direction clamps are provided with five pairs, and the Z-direction clamps are provided with four pairs, which are distributed between adjacent X-direction clamps.

[0011] Furthermore, the fixture is a composite assembly type quick clamp.

[0012] Furthermore, the Y-axis clamps are provided with two pairs, which are symmetrically distributed on both sides of the X-axis clamps at the end.

[0013] Furthermore, the X-axis clamp and the Y-axis clamp are vertical quick clamps.

[0014] Furthermore, the Z-direction clamp is a horizontal quick clamp.

[0015] Compared with the prior art, the utility model has the following advantages or beneficial effects:

[0016] (1) The utility model can solve the deformation of the soft zone of the hot-formed part during the cooling process by providing a fixing device and a three-way clamping device on both sides thereof, so that the dimensional accuracy of the part with the soft zone obtained after natural cooling is high;

[0017] (2) The spacing and number of the clamps in the utility model are determined by the size of the parts or the soft zone area, and can be used to cool parts of different sizes;

[0018] (3) The clamping tooling of the utility model is easy to operate and its cost is much lower than that of the shaping mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn completely to scale, and the emphasis is on illustrating the subject matter of the present invention.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a clamping tool in one embodiment of the utility model;

[0021] Figure 2 includes Figure 2-1 , Figure 2-2 , Figure 2-3 , Figure 2-4 , is a schematic diagram of a top view of a clamping tool in an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of a support base in one embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of a fixing device in one embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of a Z-direction clamp in one embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the Y-axis clamp in one embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of an X-axis clamp in one embodiment of the utility model;

[0027] Among them, 1. base plate; 2. support seat; 3. fixture; 4. X-axis clamping device; 5. Y-axis clamping device; 6. Z-axis clamping device. DETAILED DESCRIPTION

[0028] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be understood that all of these exemplary embodiments described are only partial embodiments and examples of the present utility model, rather than all of them. On the contrary, these exemplary embodiments are provided so that those skilled in the art can more thoroughly understand the present disclosure and can more completely convey the technical content of the present disclosure to those skilled in the art.

[0029] Example

[0030] See also Figure 1 As shown in Figure 2, this embodiment provides a clamping tool for natural cooling of hot stamping parts with soft zones, including a base plate 1, a supporting device assembled on the base plate 1, a fixing device, and clamping devices arranged on both sides of the fixing device; the clamping device includes an X-axis clamping device 4, a Y-axis clamping device 5 and a Z-axis clamping device 6; the X-axis clamping device 4 includes a plurality of pairs of X-axis clamps; the Z-axis clamping device 6 includes a plurality of pairs of Z-axis clamps; the X-axis clamps and the Z-axis clamps are arranged in two rows along a straight line at intervals; the Y-axis clamping device 5 includes a plurality of pairs of Y-axis clamps, which are symmetrically arranged on both sides of the X-axis clamping device 4.

[0031] As a specific example, see Figure 2-1 and Figure 3 The supporting device comprises nine supporting seats 2 arranged in a nine-square grid in the middle of the bottom plate 1. The nine supporting seats 2 together form the supporting device, so that the parts are evenly stressed before being fixed by the fixing device and are more stable after being fixed. Figure 2-3 and Figure 4 The fixing device includes four fixing devices 3 symmetrically arranged at both ends of the supporting device. The fixing devices 3 are CLAMPTEK CH-72425 composite vertical quick clamps. After the parts are stably placed on the supporting seat 2, the four fixing devices 3 are used to fix the parts to ensure that the clamps in all directions will not deviate during the clamping process.

[0032] As a preferred technical solution, further: see Figure 2-2 and Figure 2-4 The X-axis clamps are provided with five pairs, and the Z-axis clamps are provided with four pairs, which are distributed between adjacent X-axis clamps. Figure 1 and Figure 2-3 The Y-axis clamps are provided with two pairs, symmetrically distributed on both sides of the X-axis clamps at the end.

[0033] See also Figure 5 The Z-axis clamp is preferably a horizontal quick clamp, including an upward pull-down armrest. The Z-axis clamp can be closed and clamped by pulling the armrest upward, and the Z-axis clamp can be opened by pressing the armrest downward after the part is completely cooled.

[0034] See also Figure 6 and Figure 7 ( Figure 7 The X-axis clamp and the Y-axis clamp are preferably vertical quick clamps, including a pull-up and press-down armrest. For example, during use, the Y-axis clamp can be closed and clamped by pulling the armrest upward, and the Y-axis clamp can be opened by pressing the armrest downward after the part is completely cooled.

[0035] The spacing and number of the support seat 2, the fixture 3 and the clamping device fixed on the base plate 1 are determined by the size of the part or the soft zone area, so that the clamping fixture can be used to cool parts of different sizes.

[0036] The natural cooling of hot stamped parts with soft zones using the above-mentioned clamping fixture includes the following steps:

[0037] Step S101, opening the fixing device, the X-axis clamping device 4, the Y-axis clamping device 5, and the Z-axis clamping device 6 of the clamping tool;

[0038] Step S102: After the part with the soft zone is pressed out of the thermoforming mold, a robot or an operator moves the part from the mold to the support seat 2 of the opened clamping tooling.

[0039] Step S103 , after the part is fixed by the fixer 3 , the Z-direction clamping device 6 is closed first, and the X-direction and Y-direction clamping devices then press the part flange position onto the Z-direction clamping device 6 .

[0040] Step S104, closing the X-axis clamping device 4 and the Y-axis clamping device 5 in sequence;

[0041] Step S105, wait for the soft zone of the part to cool down and shrink in the air. Although the ejection temperature of the soft zone is higher, the temperature drop is larger than that of the hard zone. Since the clamping devices limit the shrinkage, the size change is limited. After cooling to room temperature, the part is fixed to the required size.

[0042] Step S106, open the Y-axis clamping device 5, the X-axis clamping device 4, the Z-axis clamping device 6, and the fixture 3 in sequence, and the robot or the operator takes away the part.

[0043] In summary, the present application provides a clamping fixture for natural cooling of hot stamping parts with soft zones, comprising a base plate, a supporting device mounted on the base plate, a fixing device, and clamping devices arranged on both sides of the fixing device; the clamping device comprises an X-direction clamping device, a Y-direction clamping device, and a Z-direction clamping device; the X-direction clamping device comprises a plurality of pairs of X-direction clamps; the Z-direction clamping device comprises a plurality of pairs of Z-direction clamps; the X-direction clamps and the Z-direction clamps are arranged in two rows along a straight line at intervals; the Y-direction clamping device comprises a plurality of pairs of Y-direction clamps, which are symmetrically arranged on both sides of the X-direction clamping device. The utility model provides a fixing device and three-way clamping devices on both sides thereof, so that the dimensional accuracy of the parts with soft zones obtained after natural cooling is high.

[0044] The standard parts used in this application document can be purchased directly from the market, and the non-standard structural components recorded in the specification can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the existing technology, and the machinery, parts and equipment (such as clamps and fixtures) all adopt conventional models in the existing technology, so no specific description is given here.

[0045] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A clamping fixture for natural cooling of hot stamping parts with soft zones, comprising a base plate (1), a supporting device and a fixing device mounted on the base plate (1), characterized in that: It also includes clamping devices arranged on both sides of the fixing device; the clamping devices include an X-direction clamping device (4), a Y-direction clamping device (5) and a Z-direction clamping device (6); the X-direction clamping device (4) includes a plurality of pairs of X-direction clamps; the Z-direction clamping device (6) includes a plurality of pairs of Z-direction clamps; the X-direction clamps and the Z-direction clamps are arranged in two rows along a straight line at intervals; the Y-direction clamping device (5) includes a plurality of pairs of Y-direction clamps, which are symmetrically arranged on both sides of the X-direction clamping device (4).

2. A clamping fixture for natural cooling of hot stamping parts with soft zones according to claim 1, characterized in that: The support device comprises nine support seats (2) arranged in a nine-square grid in the middle of the bottom plate (1).

3. The clamping fixture for natural cooling of hot stamping parts with soft zones according to claim 1, characterized in that: The fixing device comprises four fixers (3) symmetrically arranged at two ends of the supporting device.

4. The clamping fixture for natural cooling of hot stamping parts with soft zones according to claim 2, characterized in that: The X-direction clamps are provided in five pairs, and the Z-direction clamps are provided in four pairs, which are distributed between adjacent X-direction clamps.

5. The clamping fixture for natural cooling of hot stamping parts with soft zones according to claim 3, characterized in that: The fixer (3) is a composite vertical quick clamp.

6. A clamping fixture for natural cooling of hot stamping parts with soft zones according to claim 1 or 4, characterized in that: The Y-direction clamps are provided with two pairs, which are symmetrically distributed on both sides of the X-direction clamps at the end.

7. A clamping fixture for natural cooling of hot stamping parts with soft zones according to claim 5, characterized in that: The X-axis clamp and the Y-axis clamp are vertical quick clamps.

8. The clamping fixture for natural cooling of hot stamping parts with soft zones according to claim 7, characterized in that: The Z-direction clamp is a horizontal quick clamp.

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