KR102569880B1 - Press mold device for manufacturing transfer drive gears - Google Patents

Abstract

The present invention discloses a press mold device for manufacturing a transfer drive gear, and in the press mold device for manufacturing a transfer drive gear, an upper press that is lifted and operated, and a lifting block fixed to the lower part of the upper press and moved up and down by the upper press And, a lower press having a punch unit fixed to the lower part of the lifting block and forming a spline gear to the inside of the transfer drive gear, and an extrusion die fixedly installed on the upper part of the base frame and into which the base material is injected, and the base frame It is installed on and includes a deburring unit for removing burrs by being rotated and inserted into the side of the spline gear by a lowering operation after the upper press is lifted.

Description

Press mold device for manufacturing transfer drive gears {Press mold device for manufacturing transfer drive gears}

The present invention relates to a press mold apparatus, and relates to a press mold apparatus for manufacturing a transfer drive gear having a burr removal unit to remove burrs generated on an inner spline gear of a transfer drive gear in the process of compression molding.

In general, an automobile transmission is a transmission device installed between an engine and a driving shaft to properly select a gear ratio according to the driving condition of a vehicle to maintain an appropriate shift driving state. It consists of a torque converter that transmits power to the engine, a planetary gearbox that shifts the driving force of the engine according to the driving condition of the vehicle, and a clutch and brake that control the driving force of the engine that is transmitted to the planetary gearbox.

The planetary gear device is capable of driving a vehicle by utilizing the corresponding element of the planetary gear train as an input element, a reaction force element, and an output element, respectively, when shifting, and the driving force output from the output element of the planetary gear device is on the input shaft. The driving force transmitted to the provided transfer drive gear is transmitted to the transfer drive gear provided on the output shaft again, and the driving force transmitted to the transfer drive gear is transmitted to the differential device. The transmitted driving force is transmitted to the tire through the driving shaft after being decelerated at the finally set final reduction ratio. That is, the transfer drive gear is a gear serving to transmit engine power input through the torque converter to the drive shaft via the transfer driven gear.

Looking at the transfer drive gear 10 described above, as shown in FIG. 1, a spline gear 12 is formed in an insertion hole formed in the center of a body made of metal while forming a circular shape, and a transfer shaft (not shown) is coupled to transmit power. is formed to

However, the conventional transfer drive gear 10 is manufactured by a press mold device, and more specifically, in the case of a shaft processing method including a spline, a material preparation step of appropriately cutting the length of the material to be processed, and the prepared Spline gears are formed on the spline shaft through the centering step of clamping the material into the turning machine, the turning step of forming the spline at a designated position through the centering step, and the rolling step of forming the spline by repeated pressing on the spline. .

Here, in forming the spline gear 12 on the inside through repeated pressing operations, burrs occur on the spline gear 12, resulting in poor precision.

Republic of Korea Patent Publication No. 10-2010-0057418 (published on May 31, 2010) Korean Patent Publication No. 10-2013-0100066 (published on September 9, 2013)

Embodiments of the present disclosure are to improve the problems and limitations of the above-described conventional press mold apparatus for manufacturing transfer drive gears, and to remove burrs generated on the inner spline gear of the transfer drive gear in the process of compression molding. Provided is a press mold device of a transfer drive gear having a deburring unit so as to be able to do so.

The technical problems to be achieved in the embodiments of the present disclosure are not limited to the above-mentioned matters, and other technical problems that are not mentioned are not limited to those skilled in the art from various embodiments to be described below. can be considered by

A press mold device for a transfer drive gear according to the spirit of the present invention, in a press mold device for manufacturing a transfer drive gear, includes an upper press that is lifted and moved, and a lift that is fixed to the lower part of the upper press and moved up and down by the upper press. A lower press having a block, a punch unit fixed to the lower portion of the lifting block and forming a spline gear into the inside of the transfer drive gear, and an extrusion die fixed to the upper portion of the base frame and into which the base material is injected, and the base It is installed on the frame, and after the upper press is raised and lowered, it is rotated and inserted into the spline gear side by a lowering operation to include a burr removal unit for removing burrs.

According to an embodiment of the present invention, the deburring unit includes a rotating unit installed on the base frame, a fixed plate installed on the rotating unit, a moving plate installed to be able to move up and down on the fixed plate, and a moving plate It may include a deburring tool installed through the fixing plate and inserted along the spline gear to remove a burr, and a cylinder driving the deburring tool.

According to an embodiment of the present invention, the rotation unit is composed of a drive motor and a rotation arm coupled to a drive shaft of the drive motor, forming a cross protrusion to correspond to a cross groove of the drive shaft, and connected to the fixing plate. It can be.

According to an embodiment of the present invention, the deburring tool is installed on the fixed block of the moving plate, is operated downward within a limited range, and is installed in a tool housing closely adhered to the upper surface of the transfer drive gear, and installed inside the tool housing. It may be composed of a tool shaft that moves up and down inside the tool housing by the operation of the cylinder and forms a spline shaft to be inserted into a spline gear at a lower end side.

According to an embodiment of the present invention, a suction passage is formed at an inner center of the tool shaft along an axial direction, a plurality of suction holes are formed along the spline shaft so as to communicate with the suction passage, and are connected to the suction passage to the suction hole. An air suction device for sucking and discharging the burr removed from may be installed outside.

In the press mold apparatus for manufacturing the transfer drive gear according to the present invention, the quality of the compression molded product by the mold apparatus can be improved by providing a burr removal unit to remove the burr generated on the inner spline gear of the transfer drive gear. there is.

In addition, it is possible to increase work efficiency by reducing the working time required for the deburring process of compression molded products, and to reduce labor costs for the deburring process.

1 is a perspective view of a general transfer drive gear;
2 is a schematic overall configuration diagram of a press mold device for a transfer drive gear according to an embodiment of the present invention;
3 is a partial cross-sectional configuration diagram of a press mold apparatus according to an embodiment of the present invention;
4 is a perspective view of a deburring unit according to an embodiment of the present invention;
5 is an exploded perspective view of the rotation unit in FIG. 4;
6 is a cross-sectional view showing a deburring tool in a deburring unit according to an embodiment of the present invention;
7 is a cross-sectional view of the tool axis in FIG. 6;
FIG. 8 is a view showing an operating relationship of the deburring unit in FIG. 6 .

The embodiments described in this specification and the configurations shown in the drawings are only one preferred example of the disclosed invention, and there may be various modifications that can replace the embodiments and drawings in this specification at the time of filing of the present application.

The same reference numerals or numerals presented in each drawing in this specification indicate parts or components that perform substantially the same function. The shapes and sizes of elements in the drawings may be exaggerated for clarity.

Terms used in this specification are used to describe the embodiments, and are not intended to limit and/or limit the disclosed invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “include” or “have” are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It does not preclude in advance the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Terms including ordinal numbers such as “first” and “second” used herein may be used to describe various components, but the components are not limited by the terms, and the terms are one It is used only for the purpose of distinguishing a component from other components. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The term “and/or” includes any combination of a plurality of related recited items or any one of a plurality of related recited items.

Terms such as "... unit", "... unit", and "module" described in the specification mean a unit that processes at least one function or operation, which is implemented by hardware or software or a combination of hardware and software. It can be. Also, “a or an”, “one”, “the” and like terms are used herein in the context of describing various embodiments (particularly in the context of the claims below). Unless otherwise indicated or clearly contradicted by context, both the singular and the plural can be used.

The terms "top", "bottom", "front", "rear", etc. used below are defined based on the drawings, and the shape and position of each component are not limited by these terms.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a schematic overall configuration diagram of a press mold device for a transfer drive gear according to an embodiment of the present invention, FIG. 3 is a partial cross-sectional view of a press mold device according to an embodiment of the present invention, and FIG. is a perspective view of a deburring unit according to an embodiment of the present invention, FIG. 5 is an exploded perspective view of the rotary unit in FIG. 4, and FIG. 6 is a cross-sectional view showing a deburring tool in the deburring unit according to an embodiment of the present invention. 7 is a cross-sectional view of the tool shaft in FIG. 6 , and FIG. 8 is a view showing an operating relationship of the burr removal unit in FIG. 6 .

The press mold device of the transfer drive gear in the present invention will be described with reference to FIGS. 2 to 4.

Largely, the press mold apparatus 100 includes a base frame 110, an upper press 120 installed on the base frame 110 and operated to move up and down, and an extrusion die 132 facing the upper press 120 and into which a base material is introduced. ) It is inserted into the spline gear 12 molded in the lower press 130 and the transfer drive gear 10 having a burr to include a burr removal unit 200 to remove the burr.

The base frame 110 has a frame shape supported on a bottom surface, and a mold device and various electrical control devices may be installed on a flat top surface.

As shown in FIG. 3, the upper press 120 is raised and lowered by an unshown lifting and lowering driving means, and has an operating range (elevating range) greater than the axial length of the spline gear 12, as well as a deburring unit 200 ) is installed to be lifted to a greater extent so that it can be positioned.

Here, the upper press 120 includes a lift block 122 fixed to the lower part and moved up and down by the upper press 120, and a spline to the inside of the transfer drive gear 10 fixed to the lower part of the lift block 122 and molded. A punch portion 124 for forming the gear 12 may be included.

And the lower press 130 is fixedly installed to the base frame 110, and is provided with an extrusion die 132 into which the base material is injected.

Here, the upper press 120 and the lower press 130 are widely used devices, and detailed descriptions thereof will be omitted.

According to the characteristics of the present invention, as shown in FIG. 1, the deburring unit 200 may be installed on the base frame 110 in close proximity to one side of the mold apparatus composed of the upper press 120 and the lower press 130. there is.

The deburring unit 200 is rotated after the upper press 120 is raised and lowered, and inserted into the spline gear 12 by a lowering operation to remove burrs.

Referring to FIG. 4 , the deburring unit 200 includes a rotating unit 210, a fixed plate 220 installed on the rotating unit 210, and a moving plate 230 installed to be able to move up and down on the fixed plate 220. ), a deburring tool 270 installed on the moving plate 230 and installed through the fixing plate 220 and inserted along the spline gear 12 to remove burrs and driving the deburring tool 270 The cylinder 260 may be included.

The rotation unit 210 may be installed on a base frame 110 adjacent to one side of a mold apparatus composed of an upper press 120 and a lower press 130 .

In more detail, in the rotation unit 210 in FIG. 5, a drive motor 212 electrically connected is fixed to the base frame 110, and a drive shaft 214 and a rotation arm 216 connected from the drive motor 212 may consist of

In order to transmit power between the drive shaft 214 and the rotation arm 216, a cross groove 214a is formed in the axial direction of the drive shaft 214, and the end surface of the rotation arm 216 corresponds to the cross groove 214a. Cross-shaped protrusions 216a may be formed.

Therefore, by inserting the criss-cross protrusion 216a of the rotation arm 216 into the criss-cross groove 214a of the drive shaft 214, the drive shaft 214 and the rotation arm 216 are connected to drive the drive motor 212. According to the drive, the drive shaft 214 and the rotation arm 216 may be operated in rotation.

Preferably, the rotation range of the driving motor 212 may be preset to 180°.

And the rotation arm 216 is composed of a vertical axis connected to the drive shaft 214 and a horizontal axis integrally connected to the vertical axis and connected to the fixing plate 220, and may have an overall "L" shape.

Referring again to FIGS. 4 and 6, first, the fixing plate 220 is made of a metal material, and the overall shape is a "c" shape, and the rotating arm 216 is connected to one side by a fastening means such as a bolt, A moving plate 230, a deburring tool 270, and a cylinder 260 are installed to one open side of the letter "c".

A moving plate 230 is installed on the fixed plate 220 so as to be able to move up and down.

The moving plate 230 has a cross-sectional shape of a "b" shape and is installed inside the "c" shaped opening of the fixing plate 220, and a vertical guide protrusion 232 is formed on one vertical surface to guide the elevating and descending , Guide grooves 222 may be formed in the fixing plate 220 .

The guide groove 222 may be preferably formed longer than the length of the vertical guide protrusion 232 .

In addition, a spring 240 is installed between the lower surface of the moving plate 230 and the inner side of the lower surface of the fixed plate 220 to limit the descent of the moving plate 230 and the tool shaft 274 by a certain distance, and transfer drive gear 10 When the tool shaft 274 is in contact with, the shock can be buffered.

The upper end of the spring 240 is fixed to the moving plate 230, and the other end is installed to the fixed plate 220.

A moving block 250 is installed horizontally on top of the moving plate 230 .

The moving block 250 has a certain thickness and has one end installed on the moving plate 230 so that it can be moved up and down like the moving plate 230 .

A cylinder 260 may be installed on an upper surface of the moving block 250, and a deburring tool 270 may be vertically installed on a lower surface of the moving block 250.

First, the cylinder 260 is a driving means for operating the deburring tool 270 and may be a hydraulic or pneumatic cylinder.

The cylinder rod 262 extending from the cylinder 260 passes through the moving block 250 and is connected to the deburring tool 270.

The deburring tool 270 is substantially inserted into the spline gear 12 of the transfer drive gear 10 to remove burrs generated in the spline gear 12 .

The deburring tool 270 may include a tool housing 272 and a tool shaft 274 installed inside the hollow of the tool housing 272 .

The tool housing 272 has a hollow tubular shape with upper and lower ends open, and the upper end is fixed to the lower surface of the moving block 250 and can be moved like the moving plate 230 .

In addition, a long hole 272a may be formed in the tool housing 272 so that a hose of an air suction device 300 described below may be installed through and connected to the tool shaft 274.

In addition, the cylinder rod 262 extending from the cylinder 260 into the hollow of the tool housing 272 penetrates the moving block 250 and is inserted into the tool housing 272.

Since the outer diameter of the cylinder rod 262 and the inner diameter of the tool housing 272 are the same, the tool housing 272 may be moved within a limited range according to the movement of the cylinder rod 262 .

Meanwhile, as shown in FIG. 1, the transfer drive gear 10 has a circular shape and a spline gear 12 is formed in an insertion hole formed in the center of a body made of metal so that a transfer shaft (not shown) is coupled to transmit power. is formed

The spline gear 12 is open upwards and downwards, and an annular groove 14 having a predetermined depth centered on the spline gear 12 may be formed on the upper surface while forming a step with the upper surface.

Here, the tool housing 272 adheres to the annular groove 14 to form a closed space around the tool shaft 274.

The tool shaft 274 is connected to the cylinder rod 262 and is installed inside the tool housing 272 so as to move up and down along the cylinder rod 262 .

In addition, a spline shaft 274a having a certain length may be formed at the lower end of the tool shaft 274, and the spline shaft 274a is inserted into the spline gear 12 of the transfer drive gear 10 to It removes the burrs that have occurred.

Therefore, the spline shaft 274a is inserted between the spline gears 12.

Furthermore, as shown in FIG. 7, the tool shaft 274 has a hollow suction passage 274b formed therein along the axial direction at the center, and a plurality of suction holes in the spline shaft 274a so as to communicate with the suction passage 274b. 274c may be formed.

In addition, an air suction device 300 connected to the suction passage 274b to suck in and discharge the burr removed from the suction hole 274c may be installed outside.

A hose (not given a number) leading from the air suction device 300 may be installed through the long hole 272a of the tool housing 272.

The air suction device 300 is a method of lowering air pressure with air, may supply air, and may maintain a constant pressure toward the spline gear 12.

And, although not shown, a pressure sensor may be further installed inside the hollow of the tool housing 272, and the air flow inside the tool housing 272 may be sensed by the pressure sensor.

And the mold apparatus according to an embodiment of the present invention may further include a control unit. The control unit may be connected to the pressure sensor and may also be connected to the driving motor 212 and the cylinder 260 .

Furthermore, the lower press 130 may further include a proximity sensor that detects a sensing object and outputs a sensing signal to a controller.

The object to be sensed may be the deburring tool 270 rotated by the rotation unit 210 .

When a detection signal is transmitted from the proximity sensor to the controller, the cylinder 260 is operated, and then the air suction device 300 is operated to remove the burr.

The pressure sensor may detect the degree of pressure drop and transmit a signal to the control unit to control the air suction device 300 .

The operation of the press mold device of the transfer drive gear according to the present invention configured as described above will be described with reference to FIG. 8 .

When the base material is loaded into the extrusion die 132 of the lower press 130, the upper press 120 descends, and the elevating block 122 descends along the upper press 120 to form the transfer drive gear 10. Together with the punch unit 124, the spline gear 12 is molded into the center of the transfer drive gear 10.

When the molding of the spline gear 12 is completed, the upper press 120 is raised.

Subsequently, the burr removal unit 200 is operated to remove burrs generated on the spline gear 12 side.

When power is applied to the drive motor 212, the rotation arm 216 of the cross projection 216a coupled to the cross groove 214a of the drive shaft 214 rotates 180° so that the upper press 120 rises. It is rotated and moved to the upper side of the lower press 130.

The movement of the rotation arm 216 detects the position of the proximity sensor and transmits a detection signal to the control unit.

When the cylinder 260 is driven through the control unit, the moving plate 230 coupled to the cylinder rod 262 and the deburring tool 270 are moved together.

At this time, the vertical guide protrusion 232 of the moving plate 230 is moved while being guided by the guide groove 222 of the fixing plate 220, and the tool housing 272 of the deburring tool 270 moves the transfer drive gear 10 ) By being closely supported by the annular groove 14, the hollow inside of the tool housing 272 is sealed.

Here, when the tool housing 272 contacts the annular groove 14, the impact is absorbed by the spring 240.

And, in a state where the tool housing 272 is supported by the annular groove 14, the tool shaft 274 is further lowered by the operation of the cylinder rod 262 so that the spline shaft 274a is the spline gear 12 of the transfer drive gear 10. ) is inserted into

When the spline shaft 274a is inserted, the air suction device 300 is operated in a state in which the descending operation of the cylinder 260 is stopped, and foreign substances such as burrs are removed from the suction hole 274c and the suction passage 274b. is emitted along

In the process of inserting the spline shaft 274a, extra burrs generated in the spline gear 12 may fall off, and the burrs that fall off are discharged.

Whether or not the air suction device 300 operates is determined through the pressure sensor and the control unit, and when the removal of the burrs is completed, the tool shaft 274 moves from the spline gear 12 of the transfer drive gear 10 by the upward action of the cylinder 260. ) comes out, the deburring tool 270 is removed, and the rotation arm 216 is rotated by 180° using the drive motor 212 to return to its original position.

The transfer drive gear 10 from which burrs are removed is unloaded from the extrusion die 132 of the lower press 130.

According to the foregoing, by providing a burr removal unit to remove burrs generated in the inner spline gear of the transfer gear, it is possible to improve the quality of the compression molded product by the mold device.

In addition, it is possible to increase work efficiency by reducing the working time required for the deburring process of compression molded products, and to reduce labor costs for the deburring process.

In the above, specific embodiments have been illustrated and described. However, it is not limited to the above-described embodiments, and those skilled in the art will be able to make various changes without departing from the gist of the technical idea of the invention described in the claims below. .

10: transfer drive gear 12: spline gear
14: annular groove 100: press mold device
110: base frame 120: upper press
122: lifting block 124: punch unit
130: lower press 132: extrusion die
200: deburring unit 210: rotation unit
212: drive motor 214: drive shaft
214a: cross groove 216: rotation arm
216a: criss-cross projection 220: fixed plate
222: guide groove 230: moving plate
232: vertical guide protrusion 240: spring
250: moving block 260: cylinder
262: cylinder rod 270: deburring tool
272: tool housing 272a: long hole
274: tool axis 274a: spline axis
274b: suction flow path 274c: suction hole
300: air intake device

Claims (5)

delete In the press mold device for manufacturing a transfer drive gear,
Upper press operated by lifting;
A lifting block fixed to the lower part of the upper press and moved up and down by the upper press;
a punch unit fixed to a lower portion of the lifting block and forming a spline gear into the transfer drive gear;
A lower press that is fixedly installed on the upper part of the base frame and has an extrusion die into which a base material is injected; and
A burr removal unit installed on the base frame, rotated after the upper press is lifted, and inserted into the spline gear side by a lowering operation to remove burrs,
The burr removal unit,
A rotation unit installed on the base frame;
A fixed plate installed on the rotation unit;
A moving plate installed to be able to ascend and descend from the fixed plate;
A deburring tool installed on the moving plate and installed through the fixing plate to be inserted along the spline gear to remove burrs; and
A press mold device for manufacturing a transfer drive gear comprising a cylinder for driving the deburring tool.
According to claim 2,
The rotation unit,
drive motor,
A press mold device for manufacturing transfer drive gears, which is coupled to the drive shaft of the drive motor, and consists of a rotation arm connected to the fixing plate and forming a cross protrusion to correspond to the cross groove of the drive shaft.
According to claim 3,
The deburring tool,
A tool housing installed on the fixed block of the moving plate and operated downward within a limited range to be in close contact with the upper surface of the transfer drive gear, and
A press mold device for manufacturing a transfer drive gear composed of a tool shaft installed inside the tool housing, raised and lowered inside the tool housing by the operation of the cylinder, and forming a spline shaft to be inserted into the spline gear at the lower end side.
According to claim 4,
A suction passage is formed in the center of the tool shaft along the axial direction,
A plurality of suction holes are formed along the spline shaft to communicate with the suction passage,
A press mold device for manufacturing transfer drive gears, in which an air suction device connected to the suction passage and sucking and discharging the burr removed from the suction hole is installed outside.