CN106238660B - A kind of motor shaft compound molding device and method - Google Patents

Abstract

The invention discloses a motor shaft compound forming device, which comprises a left mold base, a right mold base, a first combined die, a second combined die, a third combined die, a limit unloading device and a unloading device, wherein The left mold base and the right mold base are set opposite to each other, the first combination die is set inside the left mold base through the left die fixing plate, the second combination die and the third combination die are sequentially set on the right mold through the right die fixing plate On the inner side of the seat, the limit unloading device is arranged on the inner side of the left mold base, and is located outside the fixed plate of the left die, and the unloading device is arranged on the outer middle part of the right mold base; The block slides to drive the left and right mold bases closer together, and the combined dies on the left and right mold bases simultaneously extrude the billet. After forming, the limit unloading device and the unloading device realize rapid unloading, and realize the cold extrusion forming of the motor shaft in one process. The production efficiency of the motor shaft is improved, the product quality is guaranteed, the cost is low, and the device is simple.

Description

A composite forming device and method for a motor shaft

technical field

The invention relates to the technical field of motor shaft preparation, in particular to a composite forming device and method for a motor shaft.

Background technique

The existing cold extrusion motor shaft technology is a single-process production. The motor shaft part is first extruded from the blank to form one step at the right end, then extruded to form two steps at the right end, and then extruded to form three steps at the right end; the left end step is extruded according to the right end The method is formed sequentially, and finally the motor shaft part is extruded; the existing cross wedge rolling is used to form the motor shaft within the forging temperature range, and the temperature is high, and the product performance decreases. In the forming process, the core of the billet is different from extrusion forming, which has three-dimensional compressive stress. The billet bears axial tensile stress, and the core is prone to cracks. This problem is a common problem in cross-wedge rolling parts. Moreover, the die cost of cross wedge rolling is relatively high, and the manufacturing cycle is long. This process has problems such as high cost and difficult control of product quality.

To sum up, the existing devices and methods for preparing motor shafts have the problems of low production efficiency, poor product quality and high cost.

Contents of the invention

The object of the present invention is to provide a motor shaft compound forming device and its method and preparation method, so as to solve the above-mentioned problems in the prior art.

To achieve the above object, the present invention provides the following scheme:

A composite forming device for a motor shaft, comprising a left mold base, a right mold base, a first combined die, a second combined die, a third combined die, a limit unloading device and a unloading device;

The left mold base and the right mold base are arranged oppositely, and the middle parts of the left mold base and the right mold base are provided with through holes, and the through holes of the left mold base and the right mold base are concentric holes ; The outside of the left mold base is provided with a push rod push plate, and the inside of the left mold base is provided with a first combination die, a left die fixing plate and a limit discharge device, and the first combination die passes through the The left die fixing plate is fixedly arranged in the middle part of the left die base, and the inside of the first combination die is provided with a forming hole, and the forming hole of the first combination die and the through hole of the left die base are concentric holes, so A left backing plate is arranged between the first combination die and the left mold base; a push rod is fixedly connected to the middle part of the ejector rod push plate, and the ejector rod passes through the left mold base and the left pad successively. Plate, the central through hole of the first combination die and the left die fixing plate; the limit unloading device is arranged inside the left die base and outside the left die fixing plate, so The limit discharge device includes a limit sleeve and a pull rod, the limit sleeve is fixed on the left mold base, the pull rod includes a cross bar and a limit portion at one end of the cross bar, the cross bar The other end of the rod passes through the limit sleeve and the left mold base in turn and is fixedly connected with the push rod push plate, the pull rod can move left and right along the axial direction, the limit part of the pull rod and the limit sleeve A first spring is arranged between the barrels;

The inside of the right mold base is provided with the second combination die, the third combination die and the right die fixing plate, and the inside of the second combination die and the third combination die are provided with molding hole, the forming hole of the second combined die, the forming hole of the third combined die and the through hole of the right mold base are concentric holes, and the second combined die and the third combined die pass through the The right die fixing plate is fixedly arranged in the middle part of the right die base in turn, a right backing plate is arranged between the third combination die and the right die base, and a discharge plate is arranged on the outer middle part of the right die base. device, the unloading device includes a sleeve and a top block, the sleeve is fixedly connected with the right mold base, one end of the top block is set in the cavity of the sleeve, and the top block The other end is clamped in the through hole of the right mold base, a limiting column is fixedly arranged at the bottom of the sleeve, and a second spring is arranged between the limiting column and the ejector block.

Optionally, the left die fixing plate and the right die fixing plate are provided with positioning pins that cooperate with each other.

Optionally, the inner side of the left mold base and the inner side of the right mold base are provided with guide posts and guide sleeves that cooperate with each other.

Optionally, both the left die fixing plate and the limit unloading device are fixed on the left die base by cylindrical socket head cap screws.

Optionally, both the right die fixing plate and the sleeve are fixed on the right die base by cylindrical hexagon socket head cap screws.

The present invention also provides a method for compound forming a motor shaft using a motor shaft compound forming device, comprising the following steps:

Step 1. Place the right end of the cylindrical bar blank with a 10° conical surface at the left and right ends in the second combination die, and the conical surface at the right end of the blank is aligned with the forming hole wall of the third combination die. part of the contact;

Step 2: Make the pressure slider slide, the pressure slider drives the left mold base to move to the right, and the right mold base to move to the left, the molds on both sides simultaneously extrude the blank, and the blank larger than the size of the forming hole is squeezed to the The middle part of the billet moves until the left mold base contacts the right mold base. When the left mold base and the right mold base move, the left end of the blank pushes the ejector pin to move left, and the ejector pin When the push plate moves to the left, the pull rod moves to the left, and the pull rod compresses the first spring until the pull rod is limited by the right end of the limit sleeve, and the right end of the billet pushes the top block to move to the right, The second spring is slowly compressed under the action of the ejector block until the blank is extruded;

Step 3: After the billet is extruded into a motor shaft part, the pressure slider is returned, and the left mold base and the right mold base drive the first combined die, the second combined die and the third combined die Return to the original position, during the mold opening process, the first spring applies elastic force to the pull rod to the right, the pull rod pulls the push rod to move to the right, and the push rod drives the push rod to move to the right , the ejector rod pushes the shaped part out; while the mold is opened, the second spring resets until the second spring is in an intermediate state;

Step 4. When the system is stable, disassemble the formed part, apply rightward pressure to the formed part to generate a rightward displacement, separate the formed part from the ejector rod, and remove the formed part.

Optionally, when the left mold base moves to the right and the right mold base moves to the left, the guide post enters the axis hole of the guide sleeve for guidance and positioning.

Optionally, during the forming process of the blank, the positioning pins provided on the left die fixing plate and the right die fixing plate in cooperation with each other are used for positioning.

Compared with the prior art, the present invention has achieved the following technical beneficial effects:

1. The present invention adopts the composite forming method of upsetting and extruding for one-time forming, which improves the production efficiency of the motor shaft;

2. The present invention adopts the cold extrusion forming method, which has high precision, and the material is formed in a non-thermal state, so that the performance is guaranteed.

3. For different types of shafts, according to the length and diameter of the parts, the present invention only needs to replace the left and right combination molds and adjust the distance between the left and right baffles, so that a set of devices can form multiple types of shafts.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without paying creative labor.

Fig. 1 is the structural representation of the motor shaft compound forming device of the present invention;

Fig. 2 is a schematic structural view of the motor shaft compound forming device of the present invention after the billet is extruded;

In the figure: 1-left mold base, 2-ejector rod, 3-ejector rod push plate, 4-pull rod, 5-limiting sleeve, 6-first spring, 7-left die fixing plate, 8-left pad Plate, 9-the first combination die, 10-right mold base, 11-right die fixing plate, 12-the second combination die, 13-the third combination die, 14-right backing plate, 15-sleeve , 16-limit post, 17-second spring, 18-top block, 19-blank, 20-formed part, 21-locating pin, 22-guide sleeve, 23-guide post.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The object of the present invention is to provide a motor shaft compound forming device and method.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

The present invention provides a motor shaft compound forming device, as shown in Fig. Bit unloading device and unloading device;

The left mold base 1 and the right mold base 10 are arranged oppositely, and the middle parts of the left mold base 1 and the right mold base 10 have through holes, and the through holes of the left mold base 1 and the right mold base 10 are concentric holes; the outside of the left mold base 1 An ejector push plate 3 is provided, and a first combination die 9, a left die fixing plate 7 and a limit discharge device are arranged on the inner side of the left mold base 1, and the first combination die 9 is fixedly set by the left die fixing plate 7 In the middle of the left mold base 1, the left die fixing plate 7 and the left mold base 1 are fixed by cylindrical hexagon socket head cap screws, and the inside of the first combination die 9 is provided with forming holes, and the forming holes of the first combination die 9 are based on the specific The size of the motor shaft is set, the forming hole of the first combined die 9 and the through hole of the left die base 1 are concentric holes, and a left backing plate 8 is arranged between the first combined die 9 and the left die base 1; 3 The middle part is fixedly connected with an ejector rod 2, and the ejector rod 2 passes through the center through hole of the left mold base 1, the left backing plate 8, the first combined die 9 and the left die fixing plate 7 in turn; the limit unloading device is set on The inner side of the left mold base 1 and the outer side of the left die fixing plate 7, the limit unloading device includes a limit sleeve 5 and a pull rod 4, the limit sleeve 5 is fixed on the left mold base 1 by a cylindrical hexagon socket head cap screw, The tie rod 4 is a T-shaped tie rod, including a cross bar and a limit part at one end of the cross bar. The other end of the cross bar passes through the limit sleeve 5 and the left mold base 1 and is threaded with the ejector push plate 3. The pull rod 4 can drive the pull rod The push plate 3 moves left and right along the axial direction, and a first spring 6 is arranged between the limit portion of the pull rod 4 and the limit sleeve 5, and one end of the first spring 6 is against the bottom end of the limit portion of the pull rod 4, and the other end is against the bottom end of the limit portion of the pull rod 4. The bottom end of the limit sleeve 5;

The second combination die 12, the third combination die 13 and the right die fixing plate 11 are arranged on the inside of the right mold base 10, and the inside of the second combination die 12 and the third combination die 13 are provided with forming holes. The forming holes of the combined die 12 and the third combined die 13 are also set according to the specific motor shaft size, the forming holes of the second combined die 12, the forming holes 13 of the third combined die and the through hole of the right mold base 10 are concentric hole, the second combination die 12 and the third combination die 13 are fixed in the middle of the right die base 10 through the right die fixing plate 11 in turn, and the right die fixing plate 11 is fixed and set on the right die base 10 through a cylindrical socket head cap screw Above, a right backing plate 14 is arranged between the third combination die 13 and the right mold base 10, and a discharge device is provided in the middle of the outer side of the right mold base 10, and the discharge device includes a sleeve 15 and a top block 18, and the sleeve 15 and the right mold base 10 are fixedly connected by cylindrical hexagon socket head cap screws, one end of the top piece 18 is arranged in the cavity of the sleeve 15, and the other end of the top piece 18 is clamped in the through hole of the right mold base 10, and the sleeve 15 The bottom is fixed by a cylindrical hexagon socket screw to set a limit column 16, and a second spring 17 is arranged between the limit column 16 and the top block 18, and the second spring 17 is sleeved on the outside of the limit column 16, and the second spring 17 is in the middle In the state, one end abuts against the bottom of the sleeve 15, and the other end abuts against the bottom of the top block 18.

In the present invention, the left die fixing plate 7 and the right die fixing plate 11 are provided with cooperating positioning pins 21, and the inner sides of the left mold base 1 and the inner sides of the right mold base 12 are provided with mutually cooperating guide posts 23 and guide pins. Cover 22, positioning pin 21, guide post 23 and guide sleeve 22 are set in order to position the two die holders in the process of leather molding, to prevent the grinding tool from shifting during the extrusion process.

The present invention also provides a motor shaft compound forming method, which is based on the above-mentioned motor shaft compound forming device, and the specific steps are as follows:

Step 1. Place the right end of the cylindrical bar blank 19 with a 10° conical surface at the left and right ends in the second combination die 12, and the conical surface at the right end of the blank 19 is aligned with the forming hole wall of the third combination die 13 part of the contact;

Step 2: Make the pressure slider slide, the pressure slider drives the left mold base 1 to move to the right, and the right mold base 10 to move to the left, the molds on both sides simultaneously extrude the blank 19, after the blank 19 larger than the size of the forming hole is squeezed Move to the middle of the blank 19 until the left mold base 1 and the right mold base 10 are in contact. When the left mold base 1 and the right mold base 10 move, the left end of the blank 9 pushes the ejector pin 2 to the left, and the ejector pin push plate 3 moves to the left. The pull rod 4 moves to the left, and the pull rod 4 compresses the first spring 6 until the pull rod 4 is limited by the right end of the limit sleeve 5, and the right end of the blank 19 pushes the top piece 18 to move to the right, and the second spring 17 is under the action of the top piece 18 Slowly compress until the blank 10 is extruded;

In this step, the guide post 23 on the left mold base 1 enters the axis hole of the guide sleeve 22 on the right mold base 10 for guidance and positioning, and the left die fixing plate 7 and the right die fixing plate 11 are arranged in cooperation with each other. The locating pin 21 is also positioned simultaneously;

Step 3: After the blank 19 is extruded into a motor shaft part, the pressure slider is returned, and the left mold base 1 and the right mold base 10 drive the first combined die 9, the second combined die 12 and the third combined die 13 Return to the original position, during the mold opening process, the first spring 6 applies elastic force to the pull rod 4 to the right, the pull rod 4 pulls the push rod push plate 3 to move to the right, the push rod push plate 3 drives the push rod 2 to move to the right, and the push rod push plate 3 The shaped part 20 is ejected; while the mold is opened, the second spring 17 resets until the second spring 17 is in the middle state;

Step 4. When the system is stable, disassemble the formed part 20 and press the part to the right. The right end of the formed part 20 pushes the top block 18, and the top block 18 compresses the second spring 17 to the right, showing an intermediate state The second spring 17 of the second spring 17 is compressed and contracted to generate a displacement, so that the shaped part 20 is separated from the push rod 2, and the shaped part 20 is removed to obtain the required motor shaft part.

The invention adopts the forming method of upsetting and extruding at one time, which improves the production efficiency of the motor shaft; adopts the cold extrusion forming method, the precision is high, the material is formed in a non-hot state, and the performance is guaranteed; for different types of shafts, according to the length and Diameter only needs to replace the left and right combined molds and adjust the distance between the left and right baffles, so that one set of equipment can form multiple types of shaft parts.

In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; meanwhile, for those of ordinary skill in the art, according to the present invention Thoughts, there will be changes in specific implementation methods and application ranges. In summary, the content of this specification should not be construed as limiting the present invention.

Claims (8)

1. A kind of 1. motor shaft compound molding device, it is characterised in that：Including left mould seat, right mould seat, the first combined die, second group Close cavity plate, the 3rd combined die, spacing device for discharging and device for discharging；

   The left mould seat is oppositely arranged with the right mould seat, and the left mould seat is described with carrying through hole in the middle part of the right mould seat Left mould block hole and the right mould block hole are concentric holes；Push rod push pedal is provided with the outside of the left mould seat, in the left mould seat Side is provided with the first combined die, left die block and spacing device for discharging, and first combined die is recessed by the left side Mould fixed plate is fixedly installed in the middle part of the left mould seat, and first combined die is internally provided with forming hole, described first group It is concentric holes that cavity plate forming hole, which is closed, with the left mould block hole, and a left side is provided between first combined die and the left mould seat Backing plate；Be fixedly connected with a push rod in the middle part of the push rod push pedal, the push rod sequentially pass through the left mould seat, the left backing plate, The central through hole of first combined die and the left die block；The spacing device for discharging is arranged at the left mould seat Inner side, and on the outside of the left die block, the spacing device for discharging includes spacing collar and pull bar, the stop collar Cylinder is fixedly installed on the left mould seat, and the pull bar includes cross bar and the limiting section of described cross bar one end, and the cross bar is another End sequentially passes through the spacing collar and the left mould seat is fixedly connected with the push rod push pedal, and the pull bar can be left vertically Move right, one first spring is provided between the limiting section of the pull bar and the spacing collar；

   Second combined die, the 3rd combined die and right die block are provided with the inside of the right mould seat, it is described It is provided with forming hole inside second combined die and the 3rd combined die, it is the second combined die forming hole, described 3rd combined die forming hole and the right mould block hole are concentric holes, second combined die and the 3rd combined die It is fixedly installed on successively in the middle part of the right mould seat by the right die block, the 3rd combined die and the right mould seat Between be provided with right backing plate, the outer middle side part of the right mould seat is provided with device for discharging, and the device for discharging includes sleeve and top Part block, the sleeve are fixedly connected with the right mould seat, and described kicker one end is arranged in the cavity of the sleeve, the top The part block other end is arranged in the through hole of the right mould seat, and the sleeve bottom is fixedly installed limited post, the limited post with Second spring is provided between the kicker.
2. A kind of 2. motor shaft compound molding device according to claim 1, it is characterised in that：The left die block with The alignment pin of mutual cooperation is provided with the right die block.
3. A kind of 3. motor shaft compound molding device according to claim 1, it is characterised in that：The left mould seat inner side and institute State the guide pillars and bushes that mutual cooperation is provided at both ends with the inside of right mould seat.
4. A kind of 4. motor shaft compound molding device according to claim 1, it is characterised in that：The left die block with The spacing device for discharging is fixed on the left mould seat by cylinder soket head cap screw.
5. A kind of 5. motor shaft compound molding device according to claim 1, it is characterised in that：The right die block with The sleeve is fixed on the right mould seat by cylinder soket head cap screw.
6. 6. a kind of motor shaft compound molding device using as described in any one of claim 1 to 5 is combined into motor shaft The method of shape, it is characterised in that comprise the following steps：

   Step 1: the left and right ends cylinder pieces of bar stock right-hand member with 10 ° of circular conical surfaces is positioned over second combined die It is interior, and the conical surface of blank right-hand member contacts with a part for the 3rd combined die forming hole hole wall；

   Step 2: sliding pressure slider, pressure slider drives the left mould seat to move to right, and the right mould seat moves to left, two side molds Blank is extruded simultaneously, it is mobile more than in the middle part of the backward blank that is squeezed of blank of forming hole sized fraction, up to institute State left mould seat to be in contact with the right mould seat, the blank left end pushes institute while the left mould seat moves with the right mould seat State push rod to move to left, the push rod push pedal moves to left, and the pull bar moves to left, and the pull bar compresses first spring, until the drawing Bar is spacing by the spacing collar right-hand member, and the blank right-hand member pushes the kicker and moved to right, and second spring is in the kicker In the presence of slowly compress, until blank complete extrusion molding；

   Step 3: after blank extruding turns into molded part, return to pressure slider, the left mould seat drives institute with the right mould seat State the first combined die, the second combined die and the 3rd combined die and return to original position, during die sinking, first spring applies The elastic force of the pull bar to the right is given, the pull bar pulls the push rod push pedal to move to right, and the push rod push pedal drives the push rod right Move, the push rod push pedal ejects the molded part；While die sinking, the second spring resets until the second spring In intermediateness；

   Step 4: until system is stable, dismounting molded part is carried out, the pressure applied to the right to molded part produces position to the right Move, molded part is separated with push rod, remove molded part.
7. 7. the method that a kind of motor shaft compound molding device according to claim 6 carries out combined shaping to motor shaft, its It is characterised by：The left mould seat moves to right, during the right mould seat moves to left, guide pillar enter guide pin bushing axle center hole carry out be oriented to and It is spacing.
8. 8. the method that a kind of motor shaft compound molding device according to claim 6 carries out combined shaping to motor shaft, its It is characterised by：It is mutual with being set on the right die block using the left die block in the blank forming process The alignment pin of cooperation is positioned.