Press-fitting tool for additive manufacturing of outer ring groove inserts

Abstract

The present invention relates to the technical field of mechanical processing equipment, and in particular to a press-fitting die for outer ring groove inlay additive processing, comprising: a base, a slide, a base, a die, and a driver; a plurality of slides are arranged on the base, the slides are evenly distributed along the outer edge of the base, a base is installed on each slide, there are a plurality of die, which are respectively installed on the base, and the die working surface points to the base hole. When the bases are close to the base hole, the plurality of die working surfaces are spliced ​​into a complete annular extrusion working surface; a plurality of deformation grooves are arranged on the die working surface, the deformation grooves are evenly distributed along the extrusion working surface, and the protrusions between the deformation grooves are extrusion bosses; the present invention reduces the number of times of the insert material rotation operation in the process to one time by arranging the deformation grooves on the die working surface to accommodate the deformed insert material, greatly simplifies the process, improves the production efficiency, and effectively avoids the problem of material defects caused by the folding and inclusion of the insert material, thereby effectively improving the product quality.

Description

Technical field:

[0001] The invention relates to the technical field of mechanical processing equipment, and in particular to a press-fitting die for inserting and adding materials in an outer ring groove. Background technology:

[0002] During the machining process, additive nested structures of annular materials, such as bushings, train wheels, shell belts, etc., are usually processed by thermal expansion, freezing, welding, ring die extrusion and other methods. When the nested matrix groove is deep and exceeds the deformation limit under the thermal expansion and freezing process, only welding and ring die extrusion processes can be used for processing. Welding has great limitations when the base material and the embedded material are inconsistent, or the processed material is sensitive to heat treatment. Therefore, the ring die extrusion method is the most applicable processing technology in this field.

[0003] In the traditional ring die extrusion process, since the insert is in the process of deformation due to extrusion and size reduction, there is a die gap in the die at the beginning of the process. The insert will squeeze into the die gap during the deformation process, blocking the die from joining. As a result, the operation of the ring die extrusion process needs to be interrupted and the insert rotated many times, which seriously wastes working hours. When the insert is soft and the deformation range required by the process is large, the insert may even fold and squeeze into the die gap, causing defects such as pores and cracks in the insert, which seriously affects the mechanical properties of the workpiece after processing. Summary of the invention:

[0004] In view of this, it is necessary to design a press-fitting die for the additive processing of the outer ring groove inlay to reduce the processing time of the related process and prevent material defects caused by the folding of the inlay material.

[0005] A press-fitting die for additive machining of an outer ring groove, comprising: a base, a slide, a base, a press die, and a driver.

[0006] The base is a round table with a base hole in the center. A plurality of slides are arranged on the base. The slides are evenly distributed along the outer edge of the base. The extension lines of the slides point to the base hole. A base is installed on each slide, and the base slides along the slide. The base, slide, and base form a hollow chuck.

[0007] There are multiple die sets, which are respectively installed on the base, and the working surfaces of the die sets point to the base hole. When the bases all slide and are close to the ends of the base holes, the multiple working surfaces of the die sets are pieced together into a complete annular extrusion working surface; the working surface of the die set is provided with multiple deformation grooves parallel to the axis of the base hole, and the deformation grooves are evenly distributed along the extrusion working surface, and the protrusions between the deformation grooves are extrusion bosses.

[0008] The driver is used to drive the die to move inward along the slide to perform the extrusion action, and the driver is connected to the die or the base in a power connection.

[0009] During operation, the workpiece substrate is fixed in the base hole, and its height is adjusted so that the embedding groove is located in the working area of ​​the die working surface. The embedded material is put on the substrate so that it is aligned with the embedding groove. The die is driven by the driver to move along the slide seat to squeeze the embedded material inward until the embedded material contacts the bottom of the embedding groove, completing the first press-fitting. During the first press-fitting process, when the embedded material is pushed and deformed by the die working surface, part of the material is bent and accommodated in the deformation groove, thereby preventing the embedded material from being concentratedly folded at the die joint of the die working surface. At the same time, the deformation groove pre-presses the embedded material, so that the embedded material is stressed as a whole, forming a circumferential compression of the annular embedded material. After the first press-fitting, the die opens and disengages from the embedded material, and the workpiece is rotated so that the curved receiving portion formed in the deformation groove during the first press-fitting process is aligned with the extrusion boss of the die working surface, and then the second press-fitting is performed. The extrusion boss extrude the curved receiving portion to make the embedded material thickness uniform and close to the embedding groove, completing the process.

[0010] Preferably, the driver is a hydraulic piston cylinder, and the power end of the hydraulic piston cylinder is connected to the outer edge of the die through a hinge rod. Alternatively, the driver is a power arm driven by rotation or direct push, and the power end of the power arm is connected to the outer edge of the die through a hinge rod. When the power arm is used, since the power arm drives all the dies at the same time, the dies move synchronously and are evenly stressed, and the deformation process of the embedded material is smoother and more uniform than the solution in which each die is independently provided with a driver.

[0011] Preferably, the joint seam between the die working surfaces is located at the deformation groove. During the first pressing process, the tendency of the inlay material to fold into the joint seam is accommodated by the deformation groove, preventing the inlay material from blocking the die action.

[0012] Preferably, the present design further comprises a base hole positioning die, and the processed workpiece is installed and positioned in the base hole through the base hole positioning die.

[0013] Furthermore, the base hole positioning die is provided with two sets of positioning grooves matching the base hole, and the rotation angle between the two sets of positioning grooves is any multiple of the rotation angle between adjacent deformation grooves plus half of the rotation angle between adjacent deformation grooves. After the first press-fitting procedure, the positioning combination of the positioning grooves can be changed to achieve the action of aligning the above-mentioned embedded material bending receiving portion with the extrusion boss on the die working surface, which simplifies the operation and improves the operation accuracy.

[0014] Furthermore, the base hole positioning die is composed of an upper centering die, a lower centering die and an axis positioning die, which are sequentially mounted on the base to be processed from top to bottom; the axis positioning die is limitedly connected to the lower end of the base to be processed and fixedly installed on the lower part of the base, and is used to position the vertical height of the base to be processed in the base hole; the upper centering die and the lower centering die are limitedly connected to the side surface of the base to be processed, and are used to position the central axis of the base to be processed so that it coincides with the axis of the base hole, and the lower centering die is connected to the axis positioning die by a spring, that is, the lower centering die slides in the base hole to prevent it from causing over-positioning of the base to be processed, and the upper centering die is fixedly connected to the upper end of the base, and the upper end edge of the upper centering die is used to support the embedded material before the first press-fitting.

[0015] In order to facilitate the adjustment of the direction of the slide, the connection and installation structure between the slide and the base in this design is a detachable structure.

[0016] In order to facilitate the adjustment of the die direction, the connection and installation structure between the base and the die in this design is a detachable structure.

[0017] The present invention provides a deformation groove on the die working surface to accommodate the deformed embedded material, thereby reducing the number of embedded material rotation operations in the process to one, greatly simplifying the process and improving production efficiency. At the same time, it effectively avoids the problem of material defects caused by folding and inclusion of the embedded material, and effectively improves product quality. Description of the drawings:

[0018] Attached Figure 1 It is a schematic diagram of the structure of the press-fitting die for the outer ring groove inlay additive processing of the present invention;

[0019] Attached Figure 2 It is a schematic diagram of the structure of the press-fitting die base for the outer ring groove inlay additive processing of the present invention;

[0020] Attached Figure 3 It is a schematic diagram of the structure of a power arm of a press-fitting die directly driven by the present invention for the outer ring groove inlay additive processing;

[0021] Attached Figure 4 It is a schematic diagram of the structure of a power arm for rotationally driving a press-fitting die for outer ring groove inlay additive processing according to the present invention;

[0022] Attached Figure 5 It is a schematic diagram of the positioning groove structure of the base hole positioning die of the press-fitting die used for the outer ring groove inlay additive processing of the present invention;

[0023] Attached Figure 6 It is a schematic diagram of the deformation structure of the embedded groove and embedded material used for the outer ring groove embedded additive processing of the present invention.

[0024] In the figure: base 1, base hole 101, slide 2, base 3, pressing die 4, deformation groove 401, extrusion boss 402, power arm 501, hinge rod 502, base hole positioning die 6, positioning groove 601, upper centering die 602, lower centering die 603, axis positioning die 604, workpiece base 7, workpiece inlay 8. Specific implementation method:

[0025] A press-fitting die for the additive machining of an outer ring groove includes: a base 1, a slide 2, a base 3, a press die 4, a driver, and a base hole positioning die 6.

[0026] Among them, the base 1 is a truncated table with a base hole 101 in the center. The workpiece is installed and positioned in the base hole 101 through a base hole positioning mold 6. The base hole positioning mold 6 is provided with two groups of positioning grooves 601 that cooperate with the base hole 101. The rotation angle between the two groups of positioning grooves 601 is any multiple of the rotation angle between adjacent deformation grooves plus half of the rotation angle between adjacent deformation grooves.

[0027] The base hole positioning die 6 is composed of an upper centering die 602, a lower centering die 603 and an axis positioning die 604. The upper centering die 602, the lower centering die 603 and the axis positioning die 604 are sequentially mounted on the substrate 7 to be processed from top to bottom; the axis positioning die 604 is limitedly connected to the lower end of the substrate 7 to be processed and fixedly installed at the lower part of the base 1, and is used to locate the vertical height of the substrate 7 to be processed in the base hole 101; the upper centering die 602 and the lower centering die 603 are limitedly connected to the side surface of the substrate 7 to be processed, and are used to locate the central axis of the substrate 7 to be processed so that it coincides with the axis of the base hole 101. The lower centering die 603 is connected to the axis positioning die 604 by a spring, that is, the lower centering die 603 slides in the base hole 101 to prevent it from causing over-positioning of the substrate 7 to be processed. The upper centering die 602 is fixedly connected to the upper end of the base 1, and the upper end edge of the upper centering die 602 is used to support the embedded material before the first press-fitting.

[0028] Three slides 2 are arranged on the base 1 , and the slides 2 are evenly distributed along the outer edge of the base 1 . The extension lines of the slides 2 point to the base hole 101 . A base 3 is installed on each slide 2 , and the base 3 slides along the slide 2 .

[0029] There are three pressing dies 4, which are respectively installed on the base 3, and the working surfaces of the pressing dies 4 point to the base hole 101. When the base 3 slides and is close to the end of the base hole 101, the three working surfaces of the pressing dies 4 are spliced ​​into a complete annular extrusion working surface; the working surface of the pressing die 4 is provided with a plurality of deformation grooves 401 parallel to the axis of the base hole 101, and the deformation grooves 401 are evenly distributed along the extrusion working surface, and the protrusions between the deformation grooves 401 are extrusion bosses 402.

[0030] The driver is used to drive the die 4 to move inward along the slide 2 to perform an extrusion action, and the driver is dynamically connected to the die 4 or the base 3 .

[0031] The driver adopts a hydraulic piston cylinder, or the driver adopts a power arm 501 driven by rotation or direct push, and the power end of the hydraulic piston cylinder or the power arm 501 is connected to the outer edge of the die 4 through a hinge rod 502. When the power arm 501 is adopted, since the power arm 501 drives all the dies 4 at the same time, the dies 4 move synchronously and are evenly stressed, and the deformation process of the embedded material is smoother and more even than the solution in which each die 4 is independently provided with a driver.

[0032] Reference Figure 3 FIG. 5 is a schematic diagram of the structure of a power arm 501 driven by direct push. When working, the power arm 501 moves up and down, and drives the die 4 to move through the hinge rod 502; Figure 4 This is a schematic diagram of the structure of a power arm 501 that is driven by rotation. When working, the power arm 501 rotates and drives the die 4 to move through the hinge rod 502.

[0033] The joint between the working surfaces of the die 4 is located at the deformation groove 401 . During the first pressing process, the tendency of the embedded material to fold into the joint is accommodated by the deformation groove 401 , preventing the embedded material from blocking the movement of the die 4 .

[0034] After the first press-fitting procedure, the positioning combination of the positioning grooves 601 can be changed to achieve the above-mentioned action of aligning the bent receiving portion of the embedded material with the extrusion boss 402 on the working surface of the die 4, which simplifies the operation and improves the operation accuracy.

[0035] In order to facilitate the adjustment of the direction of the slide 2, the connection and installation structure between the slide 2 and the base 1, and the connection and installation structure between the base 3 and the die 4 in the present design are both detachable structures.

[0036] During operation, the workpiece substrate is fixed in the base hole 101 through the base hole positioning die 6, and its height is adjusted so that the embedding groove is located in the working area of ​​the working surface of the die 4. The embedded material 8 is placed on the substrate so that it is aligned with the embedding groove. The die 4 is driven by the driver to move along the slide 2 to squeeze the embedded material inward until the embedded material contacts the bottom of the embedding groove, completing the first press-fitting. During the first press-fitting process, the embedded material is pushed and deformed by the working surface of the die 4, and part of the material is bent and accommodated in the deformation groove 401, thereby preventing the embedded material from being folded in the die joint of the working surface of the die 4. At the same time, the deformation groove 401 pre-presses the embedded material 8, so that the embedded material 8 is subjected to force as a whole, forming a circumferential compression of the annular embedded material 8. After the first press-fitting, the die 4 is opened and out of contact with the embedding material, the workpiece and the base hole positioning die 6 are rotated, and the positioning combination of the positioning groove 601 is changed so that the curved receiving portion formed in the deformation groove 401 during the first press-fitting process is aligned with the extrusion boss 402 on the working surface of the die 4, and then the second press-fitting is performed. The extrusion boss 402 extrude the curved receiving portion to make the embedding material 8 have a uniform thickness and fit tightly against the embedding groove, completing the process.

[0037] Refer to the attached Figure 6In order to ensure that the embedded material 8 and the embedded groove are tightly connected and not loose during the press-fitting process, the cross-section of the embedded groove is set to a trapezoidal shape, so that the inner width of the embedded groove is greater than the width at the groove mouth. Correspondingly, the inner surface of the embedded material 8 before press-fitting is set to a concave arc shape. During the press-fitting process, the embedded material 8 is deformed by pressure, and the concave arc-shaped inner surface expands to both sides to fill the trapezoidal embedded groove, so that the two are tightly connected.

Claims

1. A press-fitting die for additive machining of outer ring grooves, characterized in that: include: Abutments, slides, bases, dies, and drivers; The base is a round table with a base hole in the center. A plurality of slides are arranged on the base. The slides are evenly distributed along the outer edge of the base. The extension lines of the slides point to the base hole. A base is installed on each slide, and the base slides along the slide. There are multiple pressing dies, which are respectively installed on the base, and the working surfaces of the pressing dies point to the base hole. When the bases all slide close to the end of the base hole, the multiple pressing die working surfaces are combined into a complete annular extrusion working surface; The die working surface is provided with a plurality of deformation grooves parallel to the base hole axis, the deformation grooves are evenly distributed along the extrusion working surface, and the protrusions between the deformation grooves are extrusion bosses; The driver is used to drive the die to move inward along the slide to perform the extrusion action, and is dynamically connected to the die or the base; The joint joint between the die working surfaces is located at the deformation groove; It also includes a base hole positioning die, through which the workpiece is installed and positioned in the base hole; The base hole positioning die is provided with two groups of positioning grooves matching the base hole, and the rotation angle between the two groups of positioning grooves is any multiple of the rotation angle between adjacent deformation grooves plus half of the rotation angle between adjacent deformation grooves; The base hole positioning die is composed of an upper centering die, a lower centering die and an axis positioning die. The upper centering die, the lower centering die and the axis positioning die are sequentially mounted on the base to be processed from top to bottom. The axis positioning die is limitedly connected to the lower end of the base to be processed and fixedly installed on the lower part of the base. The upper centering die and the lower centering die are limitedly connected to the side surface of the base to be processed. The lower centering die is connected to the axis positioning die through a spring. The upper centering die is connected and fixed to the upper end of the base. The upper end edge of the upper centering die is used to support the embedded material before the first press-fitting.

2. The press-fitting die for outer ring groove inlay additive processing according to claim 1, characterized in that: The driver is a hydraulic piston cylinder, and the power end of the hydraulic piston cylinder is connected to the outer edge of the die through a hinge rod.

3. The press-fitting die for outer ring groove inlay additive processing according to claim 1, characterized in that: The driver is a power arm driven by rotation or direct push, and the power arm is connected to the outer edge of the die through a hinge rod.

4. The press-fitting die for outer ring groove embedding additive processing according to claim 1, characterized in that: The connection and installation structure between the slide seat and the base is a detachable structure.

5. The press-fitting die for outer ring groove embedding additive processing according to claim 1, characterized in that: The connection and installation structure between the base and the die is a detachable structure.

Images