A general shaping jig for MIM workpieces

Abstract

The utility model discloses a kind of general shaping jigs of MIM workpiece, by setting upper mould insert in upper template bottom, setting radial slide groove on lower mould core and setting slider in each extension direction of radial slide groove, there is row seat in the center of radial slide groove, the end surface of slider towards radial slide groove center is matched with row seat and forms the cavity for placing the MIM workpiece to be shaped;Multiple upper mould inner support inserts are inserted in the cavity of MIM workpiece to be shaped, the outside profile of each upper mould inner support insert is matched with the inside profile of corresponding slider, and multiple upper mould inner support inserts are formed into central guide channel by surrounding;When upper mould assembly and lower mould assembly are closed, upper mould insert is inserted into central guide channel by passing through pad, stripping plate in turn;Lower mould core bottom is equipped with multiple inclined wedge driving blocks matched with slider driving, inclined wedge driving block pushes slider to draw close to radial slide groove center direction when closed, so that jig general-purpose is stronger, shaping precision is higher.

Description

Technical Field

[0001] This utility model relates to the field of MIM processing technology, specifically a general-purpose shaping fixture for MIM workpieces. Background Technology

[0002] MIM (Metal Injection Molding) workpieces are prone to shrinkage and deformation due to the debinding and sintering process, thus requiring a shaping process to restore their designed shape and precision. Traditional shaping fixtures are mostly specialized structures with poor adaptability, making it difficult to meet the needs of multi-variety, small-batch production. Frequent fixture changes not only increase equipment investment and inventory costs but also reduce production efficiency. In addition, existing fixtures often cause workpiece deformation or inaccurate positioning during the shaping process due to uneven stress, affecting the consistency and precision of the finished product quality. Utility Model Content

[0003] To address the aforementioned challenges, this invention provides a universal forming fixture for MIM workpieces, comprising an upper mold assembly and a lower mold assembly arranged in parallel opposite directions. The upper mold assembly is connected to the lower mold assembly via guide pillars, and a driving device is connected to either the upper or lower mold assembly. The upper mold assembly includes an upper template and an upper mold core, which are connected. The lower mold assembly includes a lower template and a lower mold core, which are connected. The lower mold core and the upper mold core enclose each other to form a product forming cavity. An upper mold insert is provided at the bottom of the upper template, and a pad is embedded in the upper mold core, forming a groove with the inner wall of the upper mold core. The lower mold core has at least one radial groove, and a slider is provided on each extending direction of the radial groove. The slider is slidably connected to the groove, and a sliding seat is provided at the center of the radial groove. The end face of the slider facing the center of the radial groove cooperates with the sliding seat to form a support for placing the slider. The cavity of the MIM workpiece to be shaped is provided; multiple upper mold inner support inserts are inserted into the cavity of the MIM workpiece to be shaped. The outer contour of each upper mold inner support insert matches the inner contour of the corresponding slider. The multiple upper mold inner support inserts together form a central guide channel for the upper mold inserts to pass through; the top of the upper mold inner support insert is fitted inside the stripper plate. When the upper mold assembly and the lower mold assembly are closed, the stripper plate is embedded in the groove formed by the pad and the inner wall of the upper mold core. The upper mold insert passes through the pad and the stripper plate in sequence and is inserted into the central guide channel; multiple inclined wedge drive blocks are provided at the bottom of the upper mold core. The bottom of the inclined wedge drive block is provided with a first inclined surface, and the outer side of the slider is provided with a second inclined surface. The first inclined surface and the second inclined surface abut against each other during the mold closing process to form an inclined surface drive cooperation. When the upper mold assembly and the lower mold assembly are closed, the inclined wedge drive block pushes the slider to move towards the center of the radial slide groove.

[0004] Preferably, the radial groove is further provided with a limiting member in each of its extension directions, and the limiting member is located on the side of the slider away from the intersection of the grooves.

[0005] Preferably, the radial groove is a cross-shaped groove, and the cross-shaped groove is provided with sliders in four extension directions. Four upper mold inner support inserts are inserted into the cavity of the MIM workpiece to be shaped. The outer contour of each upper mold inner support insert matches the inner contour of the corresponding slider. The four upper mold inner support inserts together form a central guide channel.

[0006] Preferably, the radial groove is a star-shaped groove, and the star-shaped groove is provided with sliders in eight extension directions. Eight upper mold inner support inserts are inserted into the cavity of the MIM workpiece to be shaped. The outer contour of each upper mold inner support insert matches the inner contour of the corresponding slider. The eight upper mold inner support inserts together form a central guide channel.

[0007] Preferably, the lower mold core is provided with two radial grooves, and a shovel base is provided between two adjacent radial grooves. The top of the shovel base is detachably fixed to the upper mold core. The bottom sides of the shovel base are provided with a third inclined surface. The third inclined surface abuts against the second inclined surface of the slider to form an inclined surface drive cooperation. When the upper mold assembly and the lower mold assembly are closed, the shovel base pushes the slider to move closer to the intersection of the grooves.

[0008] Preferably, the upper mold insert is a conical part, and the diameter of its end furthest from the upper mold core is smaller than the diameter of its root closest to the upper mold core.

[0009] Preferably, the guide post is fixed to the bottom of the upper mold plate, the upper mold core is provided with a guide sleeve, and the guide post passes through the guide sleeve and is inserted into the guide hole of the lower mold core.

[0010] Preferably, the guide sleeve is a shouldered guide sleeve.

[0011] Preferably, the bottom of the lower mold core is provided with a positioning post, and the lower template is provided with a positioning hole, into which the positioning post is inserted.

[0012] Preferably, the upper mold core is detachably and fixedly connected to the upper template, and the lower mold core is detachably and fixedly connected to the lower template.

[0013] The beneficial effects are:

[0014] Firstly, it is highly versatile and has a wide range of applications. The radial groove and slider design allows for the replacement of sliders, upper mold inner support inserts and upper mold inserts of different sizes according to the size and shape of the workpiece. Furthermore, by adjusting the number of sliders and their position in the groove, and by using upper mold inner support inserts of different numbers and contours, it can adapt to the shaping needs of MIM workpieces of various sizes and shapes, reduce the frequency of changing special fixtures, and reduce equipment investment and inventory costs. It is especially suitable for multi-variety, small-batch production scenarios.

[0015] Secondly, it features uniform force distribution, accurate positioning, and high forming precision. The fitting design of the upper mold inner support insert and the inner side of the slider, along with the construction of the central guide channel, supports the inside of the workpiece cavity through the upper mold inner support insert and the upper mold insert, preventing the MIM workpiece from collapsing during forming. At the same time, the inclined wedge drive block and the inclined surface design of the slider can convert the mold closing force into a stable radial driving force, ensuring that the slider moves towards the center synchronously, achieving multi-directional synchronous and uniform force application. This realizes the internal and external collaborative mode of the upper mold inner support insert supporting the workpiece from the inside and the slider squeezing from the outside, avoiding deformation of the MIM workpiece due to unilateral force, and significantly improving forming precision and consistency. In addition, the groove structure of the stripper plate embedded in the pad and the upper mold core forms a limiting constraint during mold closing, preventing the slider from overtravel or deviating. The guide pillars, combined with the precise cooperation of the upper mold insert and the central guide channel, ensure the smoothness and repeatability of the mold closing process of the upper mold assembly and the lower mold assembly, effectively controlling the forming dimensional error.

[0016] In summary, this application balances precision, reliability, and versatility, and can effectively solve the problems of workpiece deformation, positioning deviation, and narrow applicability caused by traditional forming fixtures. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this application;

[0019] Figure 2 This is a schematic diagram of the exploded structure of this application;

[0020] Figure 3 This is a further exploded structural diagram of the present application (first-person perspective);

[0021] Figure 4 This is a further schematic diagram of the structure of this application (second perspective);

[0022] In the picture:

[0023] 1. Upper mold assembly;

[0024] 11. Upper mold plate; 111. Guide pillars; 112. Upper mold inserts;

[0025] 12. Upper mold core; 121. Guide sleeve; 122. Pad plate; 1221. Insert groove; 123. Wedge drive block; 1231. First inclined surface; 124. Shovel base; 1241. Third inclined surface;

[0026] 2. Lower mold assembly;

[0027] 21. Lower mold core; 211. Guide hole; 212. Radial groove; 213. Slider; 2131. Second inclined surface; 214. Sliding seat; 215. MIM workpiece to be shaped; 216. Upper mold inner support insert; 2161. Central guide channel; 217. Stripper plate; 218. Positioning pin;

[0028] 22. Lower template; 221. Positioning hole. Detailed Implementation

[0029] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0030] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] Example

[0033] Please see Figure 1 , Figure 1 This is a schematic diagram of the overall structure of this application. Please refer to [link / reference]. Figure 1 , Figure 1This is a schematic diagram of the overall structure of this application. This embodiment provides a universal forming fixture for MIM workpieces, including an upper mold assembly 1 and a lower mold assembly 2 arranged in parallel opposite directions. The upper mold assembly 1 is connected to the lower mold assembly 2 via guide posts 111. Specifically, the guide posts 111 are fixed to the bottom of the upper mold plate 11. The upper mold core 12 is provided with a guide sleeve 121. The guide posts 111 pass through the guide sleeve 121 and are inserted into the guide hole 211 of the lower mold core 21 to achieve precise guidance and positioning between the upper and lower mold assemblies 2. The guide sleeve 121 can be a shouldered guide sleeve 121. During maintenance, the shouldered guide sleeve 121 can be easily removed from the mounting hole of the upper mold core 12 by tapping the shoulder, without damaging the upper mold core 12. The driving device can be connected to the upper mold assembly 1 or the lower mold assembly 2. When the driving device is connected to the upper mold assembly 1, the driving device drives the upper mold assembly 1 to reciprocate along the direction of the guide posts 111 to realize mold opening and mold closing operations. The upper mold assembly 1 includes an upper template 11 and an upper mold core 12, which are detachably and fixedly connected. The lower mold assembly 2 includes a lower template 22 and a lower mold core 21, which are detachably and fixedly connected. The lower mold core 21 and the upper mold core 12 enclose each other to form a product shaping cavity. To improve positioning accuracy, a positioning post 218 can be provided at the bottom of the lower mold core 21, and a positioning hole 221 is provided on the lower template 22, into which the positioning post 218 is inserted.

[0034] Please see Figure 2 and Figure 4 , Figure 2 This is a schematic diagram of the exploded structure of this application. Figure 4 This is a further structural schematic diagram of the present application (second perspective). The bottom of the upper mold plate 11 is provided with an upper mold insert 112. The upper mold insert 112 is a conical part, with its end diameter away from the upper mold core 12 being smaller than the root diameter near the upper mold core 12 to reduce mold closing resistance and improve guiding accuracy and stability. In this embodiment, the upper mold insert 112 can be detachably fixed to the bottom of the upper mold plate 11 by means of screws or other fasteners, or it can be threadedly connected to the bottom of the upper mold plate 11 by means of threaded engagement. A pad 122 is embedded inside the upper mold core 12, and the pad 122 and the inner wall of the upper mold core 12 form a groove 1221.

[0035] Please see Figure 3 , Figure 3This is a further exploded structural diagram (first-person view) of this application. The lower mold core 21 has at least one radial groove 212, and a slider 213 is provided on each extending direction of the radial groove 212. The slider 213 is slidably connected to the groove. The radial groove 212 supports multi-directional synchronous extrusion of MIM workpieces, reducing multiple step-by-step forming processes in traditional manufacturing. To prevent the slider 213 from detaching from the lower mold core 21, a limiting member can also be provided in each extending direction. The limiting member is located on the side of the slider 213 away from the intersection of the grooves. Specifically, the limiting member can be a limiting bolt, which is threadedly connected to the lower mold core 21.

[0036] See also Figure 2 and Figure 3The radial groove 212 has a slide seat 214 at its center. The slide seat 214 is detachably fixed to the lower mold core 21 by screws or other fasteners. Alternatively, a slot can be provided on the lower mold core 21 and a buckle can be provided on the slide seat 214. The slide seat 214 can be directly engaged with the lower mold core 21 by the cooperation of the slot and the buckle. This detachable fixed connection method facilitates the replacement or maintenance of the slide seat 214 in the future. The end face of slider 213 facing the center of radial groove 212 cooperates with slide seat 214 to form a cavity for placing MIM workpiece 215 to be shaped; multiple upper mold inner support inserts 216 are inserted into the cavity of MIM workpiece 215 to be shaped, and the outer contour of each upper mold inner support insert 216 matches the inner contour of the corresponding slider 213. The multiple upper mold inner support inserts 216 together form a central guide channel 2161 for the upper mold insert 112 to pass through; under this explanation, the inner side of slider 213 is the side of slider 213 closer to MIM workpiece 215 to be shaped, the end face of slider 213 facing the center of radial groove 212 is the inner side of slider 213, and the outer side of slider 213 is the side of slider 213 away from MIM workpiece 215 to be shaped. Specifically, the radial groove 212 can be a cross-shaped groove or a star-shaped groove; when the radial groove 212 is a cross-shaped groove, the cross-shaped groove is provided with sliders 213 in all four extending directions. Four upper mold inner support inserts 216 are inserted into the cavity of the MIM workpiece 215 to be shaped. The outer contour of each upper mold inner support insert 216 matches the inner contour of the corresponding slider 213. The four upper mold inner support inserts 216 together form a central guide channel 2. 161 is provided for the upper mold insert 112 to pass through; when the radial groove 212 is a star-shaped groove, the star-shaped groove is provided with sliders 213 in each of the eight extending directions. Eight upper mold inner support inserts 216 are inserted into the cavity of the MIM workpiece 215 to be shaped. The outer contour of each upper mold inner support insert 216 matches the inner contour of the corresponding slider 213. The eight upper mold inner support inserts 216 together form a central guide channel 2161 for the upper mold insert 112 to pass through. Of course, the radial groove 212 can also be any other structure that extends outward in a radial pattern with a common center as the origin. For example, a double radial groove has only two grooves that are distributed 180° opposite each other, or a twelve radial groove 212 has twelve grooves that are evenly distributed with an angle of 30° between adjacent grooves. These will not be elaborated here. Through the radial groove 212 and the slider 213 thereon, in conjunction with the mold support insert 216 and the wedge drive block 123, during the mold closing process, the wedge drive block 123 simultaneously and synchronously presses the slider 213 inward from multiple radial directions. This makes the MIM workpiece more uniformly stressed, effectively corrects the shrinkage deformation of MIM sintered parts with complex internal cavities, and achieves high-precision shaping.

[0037] See also Figure 2 and Figure 3The top of the upper mold inner support insert 216 is fitted inside the stripper plate 217. The stripper plate 217 prevents the upper mold inner support insert 216 from shaking during mold closing vibration or under force, ensuring that the upper mold insert 112 is aligned with the central guide channel 2161, facilitating the smooth insertion of the upper mold insert 112 into the central guide channel 2161. It should be noted that a small gap of 0.05~0.1mm should be maintained between the hole of the stripper plate 217 and the top of the upper mold inner support insert 216 to prevent the fit between the upper mold inner support insert 216 and the stripper plate 217 from being too tight, which would cause additional friction in the central guide channel 2161 when the upper mold insert 112 is inserted, resulting in jamming and affecting the mold closing accuracy and movement stability. At the same time, it can also prevent excessive wear of the upper mold insert 112, which would affect the service life of the upper mold insert 112. When the upper mold assembly 1 and the lower mold assembly 2 are closed, the stripper plate 217 is embedded in the groove 1221 formed by the pad plate 122 and the inner wall of the upper mold core 12. The upper mold insert 112 passes through the pad plate 122 and the stripper plate 217 in sequence and is inserted into the central guide channel 2161. The bottom of the upper mold core 12 is provided with multiple inclined wedge drive blocks 123. The bottom of the inclined wedge drive block 123 is provided with a first inclined surface 1231, and the outer side of the slider 213 is provided with a second inclined surface 2131. The first inclined surface 1231 and the second inclined surface 2131 abut against each other during the mold closing process to form an inclined surface drive cooperation. When the upper mold assembly 1 and the lower mold assembly 2 are closed, the inclined wedge drive block 123 pushes the slider 213 to move closer to the center of the radial groove 212, thereby realizing multi-directional synchronous extrusion and shaping of the MIM workpiece.

[0038] In another embodiment of this application, the lower mold core 21 is provided with two radial grooves 212, and a shovel base 124 is provided between two adjacent radial grooves 212. The top of the shovel base 124 is detachably fixed to the upper mold core 12 by fasteners such as screws. The bottom sides of the shovel base 124 are provided with third inclined surfaces 1241. The third inclined surfaces 1241 abut against the second inclined surfaces 2131 of the slider 213 to form an inclined surface drive engagement. When the upper mold assembly 1 and the lower mold assembly 2 are closed, the shovel base 124 pushes the slider 213 toward the intersection of the grooves, thereby realizing multi-directional synchronous extrusion shaping of the MIM workpiece. Of course, the lower mold core 21 can also be provided with three, four or more radial grooves 212. Correspondingly, shovel bases 124 are added between adjacent radial grooves 212. This ensures that each slider 213 can achieve inclined surface drive engagement during the mold closing process, which will not be elaborated here.

[0039] In summary, this application balances precision, reliability, and versatility, effectively solving the problems of workpiece deformation, positioning deviation, and narrow applicability caused by traditional forming fixtures. Its strong versatility is reflected in the ability to replace sliders 213, upper mold inner support inserts 216, and upper mold inserts 112 of different sizes according to the size and shape of the MIM workpiece. Furthermore, by adjusting the number and position of sliders 213 within the groove, and using upper mold inner support inserts 216 of different numbers and contours, it can adapt to the forming needs of MIM workpieces of various sizes and shapes, reducing the frequency of changing dedicated fixtures and lowering equipment investment and inventory costs, making it particularly suitable for multi-variety, small-batch production scenarios. Precision and reliability are reflected in the fitting design of the upper mold inner support insert 216 and the inner side of the slider 213, and the construction of the central guide channel 2161. The upper mold inner support insert 216 and upper mold insert 112 support the interior of the MIM workpiece cavity, preventing internal collapse during forming. Simultaneously, the wedge drive block 1... The inclined surface design of 23 and slider 213 can convert the mold closing force into a stable radial driving force, ensuring that slider 213 moves towards the center synchronously, realizing multi-directional synchronous and uniform force application. This achieves the internal and external collaborative mode of the upper mold inner support insert 216 supporting the workpiece from the inside and slider 213 squeezing from the outside, avoiding deformation of the MIM workpiece caused by unilateral force, and significantly improving the forming accuracy and consistency. In addition, the stripper plate 217 is embedded in the groove 1221 structure of the pad plate 122 and the upper mold core 12, forming a limiting constraint during mold closing, preventing slider 213 from overtravel or deviating. Through the guide post 111 and the precise cooperation between the upper mold insert 112 and the central guide channel 2161, the smoothness and repeatability of the mold closing process of the upper mold assembly 1 and the lower mold assembly 2 are ensured, effectively controlling the forming dimension error.

[0040] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A universal shaping fixture for MIM workpieces, characterized in that, The system includes an upper mold assembly and a lower mold assembly arranged in parallel opposite directions. The upper mold assembly is connected to the lower mold assembly via guide pillars, and a driving device is connected to either the upper mold assembly or the lower mold assembly. The upper mold assembly includes an upper template and an upper mold core, which are connected. The lower mold assembly includes a lower template and a lower mold core, which are connected. The lower mold core and the upper mold core enclose each other to form a product shaping cavity. The bottom of the upper template is provided with an upper mold insert, and a pad is embedded in the upper mold core. The pad and the inner wall of the upper mold core form a groove. The lower mold core is provided with at least one radial groove, and a slider is provided on each extending direction of the radial groove. The slider is slidably connected to the groove, and a sliding seat is provided at the center of the radial groove. The end face of the slider facing the center of the radial groove cooperates with the sliding seat to form a cavity for placing the MIM workpiece to be shaped. Multiple upper mold inner support inserts are inserted into the cavity of the MIM workpiece to be shaped. The outer contour of each upper mold inner support insert matches the inner contour of the corresponding slider. The multiple upper mold inner support inserts together form a central guide channel for the upper mold inserts to pass through. The top of the upper mold inner support insert is sleeved in the stripper plate. When the upper mold assembly and the lower mold assembly are closed, the stripper plate is embedded in the groove formed by the pad and the inner wall of the upper mold core. The upper mold insert passes through the pad and the stripper plate in sequence and is inserted into the central guide channel. The bottom of the upper mold core is provided with multiple inclined wedge driving blocks. The bottom of the inclined wedge driving block is provided with a first inclined surface, and the outer side of the slider is provided with a second inclined surface. The first inclined surface and the second inclined surface abut against each other during the mold closing process to form an inclined surface driving cooperation. When the upper mold assembly and the lower mold assembly are closed, the inclined wedge driving block pushes the slider toward the center of the radial slide groove.

2. The universal shaping fixture for MIM workpieces according to claim 1, characterized in that, The radial groove is further provided with a limiting member in each of its extension directions, and the limiting member is located on the side of the slider away from the intersection of the grooves.

3. The universal shaping fixture for MIM workpieces according to claim 1, characterized in that, The radial groove is a cross-shaped groove, and the cross-shaped groove is provided with sliders in four extending directions. Four upper mold inner support inserts are inserted into the cavity of the MIM workpiece to be shaped. The outer contour of each upper mold inner support insert matches the inner contour of the corresponding slider. The four upper mold inner support inserts together form the central guide channel.

4. The universal shaping fixture for MIM workpieces according to claim 1, characterized in that, The radial groove is a star-shaped groove, and the star-shaped groove is provided with sliders in eight extending directions. Eight upper mold inner support inserts are inserted into the cavity of the MIM workpiece to be shaped. The outer contour of each upper mold inner support insert matches the inner contour of the corresponding slider. The eight upper mold inner support inserts together form the central guide channel.

5. The universal shaping fixture for MIM workpieces according to any one of claims 3 and 4, characterized in that, The lower mold core is provided with two radial grooves, and a shovel base is provided between two adjacent radial grooves. The top of the shovel base is detachably fixed to the upper mold core. The bottom sides of the shovel base are provided with third inclined surfaces. The third inclined surfaces abut against the second inclined surfaces of the slider to form an inclined surface driving cooperation. When the upper mold assembly and the lower mold assembly are closed, the shovel base pushes the slider to move closer to the intersection of the grooves.

6. The universal shaping fixture for MIM workpieces according to claim 1, characterized in that, The upper mold insert is a conical piece, and the diameter of its end furthest from the upper mold core is smaller than the diameter of its root closest to the upper mold core.

7. The universal shaping fixture for MIM workpieces according to claim 1, characterized in that, The guide post is fixed to the bottom of the upper mold plate, and the upper mold core is provided with a guide sleeve. The guide post passes through the guide sleeve and is inserted into the guide hole of the lower mold core.

8. The universal shaping fixture for MIM workpieces according to claim 7, characterized in that, The guide sleeve is a shouldered guide sleeve.

9. The universal shaping fixture for MIM workpieces according to claim 1, characterized in that, The lower mold core is provided with a positioning post at its bottom, and the lower template is provided with a positioning hole, into which the positioning post is inserted.

10. The universal shaping fixture for MIM workpieces according to claim 1, characterized in that, The upper mold core is detachably and fixedly connected to the upper template, and the lower mold core is detachably and fixedly connected to the lower template.

Images