CN214866984U - Extrusion forming die for internal gear of gear ring - Google Patents
Extrusion forming die for internal gear of gear ring Download PDFInfo
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- CN214866984U CN214866984U CN202120858112.6U CN202120858112U CN214866984U CN 214866984 U CN214866984 U CN 214866984U CN 202120858112 U CN202120858112 U CN 202120858112U CN 214866984 U CN214866984 U CN 214866984U
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- internal gear
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- 238000001125 extrusion Methods 0.000 title claims abstract description 29
- 238000005242 forging Methods 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000003754 machining Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000007493 shaping process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010862 gear shaping Methods 0.000 description 4
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 1
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Abstract
The utility model relates to a gear machining technical field, concretely relates to ring gear internal gear extrusion mould, including last mould, crowded tooth sword, lower mould, liftout pole and die holder, it sets up in the upper die base below of forging and pressing equipment workstation to go up the mould, crowded tooth sword sets firmly in last mould bottom, the die holder sets firmly on forging and pressing equipment workstation, the lower mould sets firmly on the die holder, the inside crowded tooth shaping chamber that is equipped with of lower mould, the liftout pole slides and sets up in crowded tooth shaping intracavity portion, the inside back of being equipped with of liftout pole cavity that is used for holding crowded tooth sword, crowded tooth shaping chamber and back of the sword cavity set up with one heart. Through the utility model discloses ring gear internal gear extrusion mould improves machining efficiency, reduces manufacturing cost, can guarantee the internal gear simultaneously and make the precision, satisfies the requirement of the normal meshing of gear.
Description
Technical Field
The utility model relates to a gear machining technical field, specificly relate to a ring gear internal gear extrusion mould.
Background
The teeth on the inner circle are internal gears, typically in a ring gear mechanism, and the gears on the ring gear are internal gears. The inner gear is annular, the outer ring is smooth, the inner ring is provided with teeth, and the principles of the inner gear and the outer gear are completely consistent (refer to involute and gear principles). Except that the tooth grooves of the inner gear correspond to the teeth of the outer gear. For example, the top cut of the inner gear corresponds to the undercut of the outer gear. The existing internal gear processing scheme mostly adopts a gear shaping method to process a gear ring internal gear, and because the internal gear has large size, more teeth number, very low processing efficiency and non-durable gear shaping cutter, the processing cost is high. The gear ring demoulding is difficult, the internal gear which is subjected to gear burnishing is scratched in the demoulding process, the precision of the internal gear is seriously influenced, and the reject rate is very high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at solve at least above-mentioned problem, through ring gear internal gear extrusion mould, improve machining efficiency, reduce manufacturing cost, can guarantee the internal gear simultaneously and make the precision, satisfy the requirement of the normal meshing of gear.
In order to solve the technical problem, the utility model discloses a technical scheme as follows: ring gear internal gear extrusion mould, its characterized in that: including last mould, crowded serrated knife, lower mould, liftout pole and die holder, it sets up in the upper die holder below of forging and pressing equipment workstation to go up the mould, crowded serrated knife sets firmly in last mould bottom, the die holder sets firmly on forging and pressing equipment workstation, the lower mould sets firmly on the die holder, the inside crowded tooth of being equipped with of lower mould becomes the chamber, the liftout pole slides and sets up in crowded tooth becomes intracavity portion, the inside back of a knife cavity that is used for holding crowded serrated knife that is equipped with of liftout pole, crowded serrated knife, crowded tooth become chamber and back of a knife cavity and set up with one heart.
Preferably, the crowded tooth sword includes crowded tooth blade holder and crowded tooth cutter, crowded tooth blade holder sets firmly in last mould bottom through the connecting piece, crowded tooth cutter sets firmly in crowded tooth blade holder bottom through the connecting piece, be equipped with the cutting edge that is used for extruding the ring gear internal gear along the hoop on the crowded tooth cutter, the below of cutting edge is equipped with the guide part that is used for guiding orientation.
Preferably, the device further comprises a hydraulic clamping device, and the upper die base are connected in a clamping mode through the hydraulic clamping device.
Preferably, the hydraulic clamping device is a hydraulic centering vise, the hydraulic centering vise is fixedly arranged below an upper die base of the forging equipment workbench, two clamps which are oppositely arranged are arranged on the hydraulic centering vise, a compression rod is fixedly arranged below the upper die base of the forging equipment workbench, the two clamps are positioned on two sides of the compression rod, and the lower end of each clamp is lower than the lower end of the compression rod.
Preferably, the upper die is provided with a bearing part and a clamping part, the bearing part is positioned above the clamping part and matched with the pressing rod, and the clamping part is matched with the clamp.
Preferably, the lower die is fixedly arranged on the lower die base through a pressing plate.
Preferably, the clamp plate is annular, the lower mould bottom is equipped with the evagination edge, the die holder is equipped with and is used for installing the lower mould, along size matched with recessed cavity with the evagination, the evagination edge is installed in recessed cavity, and the top surface on the evagination edge flushes with the die holder top surface, the clamp plate lid is located on the top surface of evagination edge and die holder, and through connecting piece and die holder fixed connection.
Preferably, the ejector rod is annular, and an ejector plate is arranged at the bottom of the ejector rod and connected with a hydraulic ejector rod movable rod of the forging equipment workbench.
The process for molding the gear ring internal gear by using the gear ring internal gear extrusion molding die is characterized by comprising the following steps of:
step a, an upper die is clamped on an upper die base through hydraulic pressure, and the upper die rises to an upper stop point;
step b, feeding: placing the blank into a tooth extruding forming cavity in the lower die, positioning the excircle of the blank by the inner hole of the tooth extruding forming cavity of the lower die, and abutting the bottom end of the blank against the top end of the ejector rod;
step c, alignment: the upper die base slowly descends to enable the guide part of the gear burnishing cutter to be matched with the inner hole of the inner ring of the blank, hydraulic clamping is released, and the gear burnishing cutter is freely aligned;
step d, gear extrusion: the upper die holder is pressed downwards to a lower dead point to drive the gear-extruding cutter to extrude the inner ring of the blank body, so that an inner gear is extruded;
step e, demolding: starting the hydraulic ejector rod to enable the ejector rod to move upwards, so that the gear ring is ejected out of the lower die, demolding of the gear ring is achieved, and finally the workpiece is removed;
step f, resetting: the upper die base moves downwards, extends into the ejector rod to clamp the upper die, and then drives the upper die to return to the upper stop point.
Preferably, the height of the tooth extrusion forming cavity is equal to the sum of the heights of the workpiece to be processed, the ejector rod and the ejector plate.
According to the above description, the utility model provides a ring gear internal gear extrusion mould has following beneficial effect: after the gear is squeezed in the gear ring, the gear squeezing cutter is firstly kept still, after the gear is demoulded from the lower die holder by the ejector rod and a workpiece is removed, the gear squeezing cutter finishes the action of cutter withdrawing, so that the gear squeezing cutter moves in the gear ring along one direction in the machining process, the gear is prevented from being scratched when the gear squeezing cutter retracts in the gear ring in the reverse direction in the traditional machining process, the manufacturing precision of an internal gear is ensured, and the requirement of normal meshing of the gear is met; compare in traditional gear shaping technology, the utility model discloses a technology has improved machining efficiency, reduces manufacturing cost.
Drawings
Fig. 1 is the structure cross-sectional view of the feeding step of the gear ring internal gear extrusion forming die of the utility model.
Fig. 2 is a structural sectional view of the alignment step of the ring gear internal gear extrusion molding die of the present invention.
Fig. 3 is an enlarged view of a portion a of fig. 2.
Fig. 4 is a sectional view of the gear-extruding step of the gear-ring internal-gear extrusion-molding die of the present invention.
Fig. 5 is a structural sectional view of the demolding step of the ring gear internal gear extrusion molding mold of the present invention.
Fig. 6 is a sectional view showing the structure of the resetting step of the ring gear internal gear extrusion molding die of the present invention.
Detailed Description
The present invention will be further described with reference to the following detailed description.
For the purpose of making the utility model realize, the technical means, the creation characteristics, the achievement purpose and the efficiency are easy to understand and understand, and the utility model is further explained by combining the specific implementation mode.
As shown in fig. 1-4, the utility model discloses ring gear internal gear extrusion mould, including last mould 1, crowded tooth sword 2, lower mould 3, liftout pole 4 and die holder 5, it sets up in 6 below of upper die base of forging and pressing equipment workstation to go up mould 1, crowded tooth sword 2 sets firmly in last mould 1 bottom, die holder 5 sets firmly on forging and pressing equipment workstation, lower mould 3 sets firmly on die holder 5, 3 inside columniform crowded tooth shaping chamber 31 that are equipped with of lower mould, liftout pole 4 slides and sets up inside crowded tooth shaping chamber 31, the inside tool retracting cavity 41 that is used for holding crowded tooth sword 2 that is equipped with of liftout pole 4, crowded tooth sword 2, crowded tooth shaping chamber 31 and tool retracting cavity 41 set up with one heart.
As shown in fig. 3, the tooth-extruding cutter 2 includes a tooth-extruding cutter seat 21 and a tooth-extruding cutter 22, the tooth-extruding cutter seat 21 is fixedly arranged at the bottom of the upper die 1 through a connecting piece, the tooth-extruding cutter 22 is fixedly arranged at the bottom of the tooth-extruding cutter seat 21 through a connecting piece, a cutting edge 221 for extruding the gear ring internal gear is arranged on the tooth-extruding cutter 22 along the circumferential direction, a guiding part 222 for guiding and positioning is arranged below the cutting edge 221, the guiding part is cylindrical, the edge layer is arc-shaped, and the diameter of the guiding part is matched with the inner ring of the blank 100.
As a preferred embodiment, as shown in fig. 6, the utility model discloses ring gear internal gear extrusion forming die still includes hydraulic clamping device 7, goes up mould 1 and upper die base 6 and passes through hydraulic clamping device 7 clamping connection.
The hydraulic clamping device 7 is a hydraulic centering bench clamp which is fixedly arranged below an upper die base 6 of a forging equipment workbench, two clamps 71 which are oppositely arranged are arranged on the hydraulic centering bench clamp, a pressure rod 61 is fixedly arranged below the upper die base 6 of the forging equipment workbench, the pressure rod 61 is used for pressing and extruding an upper die 1, the two clamps 71 are positioned on two sides of the pressure rod 61, and the lower end of the clamp 71 is lower than the lower end of the pressure rod 61.
The upper die 1 is provided with a pressure bearing part 11 and a clamping part 12, the pressure bearing part 11 is located above the clamping part 12, the pressure bearing part 11 is matched with the pressure rod 61, the clamping part 12 is matched with the clamp 71, and the outer wall of the clamping part 12 is clamped through the opposite movement of the two clamps 71 so as to clamp the upper die 1.
In a preferred embodiment, as shown in fig. 6, the lower mold 3 is fixed to the lower mold base 5 by a pressing plate 8. The pressing plate 8 is annular, the bottom of the lower die 3 is provided with a convex edge 32, the lower die base 5 is provided with a concave cavity matched with the convex edge 32 in size, the convex edge 32 is arranged in the concave cavity, the top surface of the convex edge 32 is flush with the top surface of the lower die base 5, and the pressing plate 8 is covered on the top surfaces of the convex edge 32 and the lower die base 5 and is fixedly connected with the lower die base 5 through a connecting piece.
The ejector rod 4 is annular, the bottom of the ejector rod 4 is provided with an ejector plate 9, and the ejector plate 9 is connected with a movable rod of a hydraulic ejector rod 200 of a workbench of forging equipment.
The process for forming the gear ring internal gear by using the gear ring internal gear extrusion forming die is characterized by comprising the following steps of:
step a, as shown in fig. 1, an upper die 1 is clamped on an upper die base 6 through hydraulic pressure, and the upper die 1 rises to an upper stop point;
step b, feeding: as shown in fig. 1, a blank is placed into a tooth-extruding forming cavity 31 in a lower die 3, the outer circle of the blank is positioned by the inner hole of the tooth-extruding forming cavity 31 of the lower die 3, and the bottom end of the blank is abutted against the top end of an ejector rod 4;
step c, alignment: as shown in fig. 2, the upper die base 6 is slowly descended, the guide part 222 of the gear-extruding cutter 2 is matched with the inner hole of the inner ring of the blank, the hydraulic clamping is released, and the gear-extruding cutter 2 is freely aligned;
step d, gear extrusion: as shown in fig. 4, the bottom of the press rod 61 contacts the top of the pressure-bearing part 11, the press rod 61 transmits the pressure to the upper die 1, the upper die base 6 is pressed down to the bottom dead center, and the gear-extruding cutter 2 is driven to extrude the inner ring of the blank 100, so as to extrude the inner gear;
step e, demolding: as shown in fig. 5, the hydraulic ejector rod 200 is started to move the ejector rod 4 upwards, so that the gear ring is ejected from the lower die 3, the gear ring is demolded, the upper die 1 is lifted, finally, a workpiece is removed, if slag needs to be cleaned, the ejector rod 4 and the ejector plate 9 need to be further lifted until the top surface of the ejector plate 9 is flush with the lower die 3, and the slag can be cleaned by removing the ejector rod 4;
step f, resetting: as shown in fig. 6, the upper die base 6 moves downward, extends into the ejector pin 4 to clamp the upper die 1, and then drives the upper die 1 to return to the top dead center.
The height of the gear-extruding forming cavity 31 is equal to the sum of the heights of the workpiece to be processed, the ejector rod 4 and the ejector plate 9.
The utility model provides a ring gear internal gear extrusion mould has following beneficial effect: after the gear is squeezed in the gear ring, the gear squeezing cutter 2 is firstly kept still, after the gear is demoulded from the lower die holder 5 by the ejector rod 4 and a workpiece is removed, the gear squeezing cutter 2 finishes the action of cutter withdrawal, so that the gear squeezing cutter 2 moves in one direction in the gear ring in the machining process, the gear is prevented from being scratched when the gear squeezing cutter 2 retracts in the gear ring in the reverse direction in the traditional machining process, the manufacturing precision of an internal gear is ensured, and the requirement of normal meshing of the gear is met; compare in traditional gear shaping technology, the utility model discloses a technology has improved machining efficiency, reduces manufacturing cost.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", and the like refer to the orientation or positional relationship shown in the drawings, which is only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be considered limiting of the present invention, as these terms are not used in the present specification and are known in the art to which those skilled in the art will recognize.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected" and "disposed" are to be interpreted broadly, and may be, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed; the utility model discloses in provide only supply the reference with the model of electrical apparatus. For those skilled in the art, different types of electrical appliances with the same function can be replaced according to actual use conditions, and for those skilled in the art, the specific meaning of the above terms in the present invention can be understood in specific situations.
The aforesaid is only a plurality of concrete implementation manners of the utility model, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.
Claims (8)
1. The utility model provides a ring gear internal gear extrusion mould which characterized in that: including last mould, crowded serrated knife, lower mould, liftout pole and die holder, it sets up in the upper die holder below of forging and pressing equipment workstation to go up the mould, crowded serrated knife sets firmly in last mould bottom, the die holder sets firmly on forging and pressing equipment workstation, the lower mould sets firmly on the die holder, the inside crowded tooth of being equipped with of lower mould becomes the chamber, the liftout pole slides and sets up in crowded tooth becomes intracavity portion, the inside back of a knife cavity that is used for holding crowded serrated knife that is equipped with of liftout pole, crowded serrated knife, crowded tooth become chamber and back of a knife cavity and set up with one heart.
2. The extrusion molding die for the internal gear of the gear ring as claimed in claim 1, wherein: the tooth-extruding cutter comprises a tooth-extruding cutter holder and a tooth-extruding cutter, wherein the tooth-extruding cutter holder is fixedly arranged at the bottom of the upper die through a connecting piece, the tooth-extruding cutter is fixedly arranged at the bottom of the tooth-extruding cutter holder through a connecting piece, a cutting edge used for extruding a gear ring internal gear is arranged on the tooth-extruding cutter along the circumferential direction, and a guide part used for guiding and positioning is arranged below the cutting edge.
3. The extrusion molding die for the internal gear of the gear ring as claimed in claim 1, wherein: the die comprises an upper die and an upper die base, and is characterized by further comprising a hydraulic clamping device, wherein the upper die and the upper die base are connected in a clamping mode through the hydraulic clamping device.
4. The extrusion molding die for the internal gear of the gear ring as claimed in claim 3, wherein: the hydraulic clamping device is hydraulic centering bench clamp, the hydraulic centering bench clamp is fixedly arranged below an upper die base of a forging equipment workbench, two clamps which are oppositely arranged are arranged on the hydraulic centering bench clamp, a compression rod is fixedly arranged below the upper die base of the forging equipment workbench, the two clamps are positioned on two sides of the compression rod, and the lower end of each clamp is lower than the lower end of the compression rod.
5. The extrusion molding die for the internal gear of the gear ring as claimed in claim 4, wherein: the upper die is provided with a bearing part and a clamping part, the bearing part is positioned above the clamping part and matched with the pressing rod, and the clamping part is matched with the clamp.
6. The extrusion molding die for the internal gear of the gear ring as claimed in claim 1, wherein: the lower die is fixedly arranged on the lower die base through a pressing plate.
7. The extrusion molding die for the internal gear of the gear ring as claimed in claim 6, wherein: the clamp plate is the annular, the lower mould bottom is equipped with the evagination edge, the die holder is equipped with and is used for installing the lower mould, along size matched with recessed cavity with the evagination, the evagination is along installing in recessed cavity, and the top surface on evagination edge flushes with the die holder top surface, the clamp plate lid is located on the top surface of evagination edge and die holder, and through connecting piece and die holder fixed connection.
8. The extrusion molding die for the internal gear of the gear ring as claimed in claim 1, wherein: the material ejecting rod is annular, and the bottom of the material ejecting rod is provided with a material ejecting plate which is connected with a hydraulic ejector rod movable rod of the forging and pressing equipment workbench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120858112.6U CN214866984U (en) | 2021-04-25 | 2021-04-25 | Extrusion forming die for internal gear of gear ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120858112.6U CN214866984U (en) | 2021-04-25 | 2021-04-25 | Extrusion forming die for internal gear of gear ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214866984U true CN214866984U (en) | 2021-11-26 |
Family
ID=78948884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120858112.6U Active CN214866984U (en) | 2021-04-25 | 2021-04-25 | Extrusion forming die for internal gear of gear ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214866984U (en) |
-
2021
- 2021-04-25 CN CN202120858112.6U patent/CN214866984U/en active Active
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