CN212918545U

CN212918545U - Gravity die automatic centering tool

Info

Publication number: CN212918545U
Application number: CN202021929875.7U
Authority: CN
Inventors: 孙作晶; 崔洪章; 高鲁; 王新
Original assignee: Liaocheng Guangyuan Precision Machinery Manufacturing Co ltd
Current assignee: Liaocheng Guangyuan Precision Machinery Manufacturing Co ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-04-09
Anticipated expiration: 2030-09-07

Abstract

The utility model provides a gravity die automatic centering frock, including the processing platform, the mould work piece, elasticity joint subassembly and locating lever, the bottom at the top of mould work piece is provided with connecting hole and joint arch respectively, the protruding heavy groove cooperation that sets up with the processing platform top surface of joint, the processing platform has many constant head tanks to being circular array distribution, be provided with the elasticity joint subassembly in the constant head tank, the elasticity joint subassembly includes the location lid, radial slider, the electro-magnet, a spring, joint and locating hole, the locating lever passes and is connected with the locating hole behind the positioning seat, be provided with on the locating lever with joint head complex joint groove and be provided with the direction chamfer in its bottom. This device can make joint head and joint groove realize automatic connection in the removal limit department of locating lever through stretching into elasticity joint subassembly between the locating lever, and the electro-magnet can inhale the joint head and draw in order to release the locating lever, reasonable in design, simple structure, and the packaging efficiency is higher, and connection stability is good, is fit for extensive the popularization.

Description

Gravity die automatic centering tool

Technical Field

The utility model belongs to the technical field of wheel hub mould production facility, especially, relate to a gravity mould self-centering frock.

Background

The gravity die comprises a side die, an upper die, a lower die, a bearing seat, a sprue spreader, a central riser, a pouring cup and other accessories. In the numerical control milling process of the lower die of the gravity die, a die workpiece needs to be fastened to a machine table surface by a pressing plate and a bolt, the position and the origin of coordinates of the die workpiece are determined by a dial indicator, and then subsequent processing can be performed. However, in the mold processing industry with increasingly severe competition, any low-efficiency processing link is not allowed, and in order to shorten the overall preparation time for processing the gravity mold and improve the working efficiency, the automatic centering tool is arranged on the processing equipment.

At present, the fixing capacity of the automatic centering tool for the hub die is low, and the applicable objects are limited. For example, the prior patent technology CN201721861649.8 discloses a novel automatic centering tool for a low-pressure hub die, which comprises a magnetic chuck and a low-pressure hub die, wherein the magnetic chuck is provided with a limit fixing groove, the limit fixing groove comprises a first limit fixing groove, a second limit fixing groove and a third limit fixing groove, and the first limit fixing groove, the second limit fixing groove and the third limit fixing groove are arranged on the circumference of the magnetic chuck; a positioning fixing groove matched with the limiting fixing groove is formed in the bottom of the low-pressure hub die; the limiting fixing groove is connected with the positioning fixing groove through a key; with this low pressure wheel hub mould automatic centering frock, can improve low pressure wheel hub mould clamping precision, reduction personnel's use amount reduces personnel intensity of labour. The problem that the device exists is, because the tuber pipe that is used for cooling off the foundry goods need be installed to the bottom holding surface of some wheel hub moulds, so some adoption of gravity mould be casing column structure, and the device can only fix solid low pressure mould, and the practicality is lower, can attract a large amount of processing pieces on the magnetic force sucking disc of the device moreover, can produce the suction effect to the processing cutter even, is unfavorable for production and processing.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that foretell automatic centering frock exists, provide a reasonable in design, simple structure, stability are better, the practicality is stronger and the gravity die automatic centering frock of being convenient for processing location.

In order to achieve the above purpose, the technical solution adopted by the present invention is that, the gravity die automatic centering tool provided by the present invention comprises a processing table for placing a die workpiece, the top edge of the die workpiece is provided with a connecting hole, the top surface center of the processing table is provided with a sinking groove, the sinking groove is matched with a clamping protrusion arranged at the inner side of the bottom of the die workpiece, a plurality of pairs of positioning grooves distributed in a circular array are arranged on the processing table around the sinking groove, an elastic clamping component is arranged in the positioning grooves, the top of the elastic clamping component is provided with a positioning cover in threaded connection with the positioning grooves, a plurality of radial sliders distributed in a circular array and guide grooves for the radial sliders to move are arranged in the elastic clamping component, a shaft sleeve is arranged in the guide grooves, and the rear end of the radial sliders is provided with an annular electromagnet, the side of radial slider is provided with the shaft shoulder, be provided with the spring between shaft shoulder and the electro-magnet, the front end of radial slider is provided with the joint head, the longitudinal section of joint head is trapezoidal, the guide way is provided with the groove that resets that supplies the joint head to reset at its one end towards the joint head, the center of elasticity joint subassembly is provided with the locating hole, be provided with the locating lever that is used for connecting mould work piece and processing platform in the locating hole, be provided with on the side of locating lever with joint head complex joint groove, the bottom of locating lever is provided with the direction chamfer.

Preferably, the top of two positioning rods in the same pair of positioning grooves is provided with an arc-shaped connecting rod.

Preferably, the elasticity joint subassembly includes the last joint body and the lower joint body that upper and lower symmetry set up, the guide way sets up on the butt joint face of last joint body and lower joint body, be provided with the mounting groove that is used for placing the electro-magnet on last joint body and the lower joint body.

Preferably, the top surface of the positioning cover is provided with an inner hexagonal groove.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

1. the utility model provides a gravity die automatic centering frock can make joint head and joint groove realize automatic connection in the removal limit department of locating lever through stretching into elasticity joint subassembly between the locating lever, and the electro-magnet can inhale the joint head with the release locating lever, reasonable in design, simple structure, and packaging efficiency is higher, and connection stability is good, is favorable to improving production efficiency, is fit for extensive the popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of a gravity die automatic centering tool provided in an embodiment;

FIG. 2 is a schematic structural view of an elastic clamping assembly and a positioning rod according to an embodiment;

FIG. 3 is a schematic distribution diagram of the elastic clamping assembly and the positioning rod according to the embodiment;

in the above figures, 1, a processing table; 11. sinking a groove; 12. positioning a groove; 2. a die workpiece; 21. connecting holes; 22. clamping the bulges; 3. an elastic clamping component; 31. a positioning cover; 32. a radial slider; 33. an electromagnet; 34. a shaft shoulder; 35. a spring; 36. a clamping head; 37. positioning holes; 38. a guide groove; 381. a reset groove; 39. a shaft sleeve; 310. an inner hexagonal groove; 311. an upper clamping body; 312. a lower clamping body; 4. positioning a rod; 41. a clamping groove; 42. guiding and chamfering; 5. a connecting rod.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the same directions as the drawings, and do not limit the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

In the embodiment, as shown in fig. 1, fig. 2 and fig. 3, the gravity die automatic centering tool provided by the present invention comprises a processing table 1 for placing a die workpiece 2, a connecting hole 21 is provided at the top edge of the die workpiece 2, a sinking groove 11 is provided at the top center of the processing table 1, the sinking groove 11 is matched with a clamping protrusion 22 provided at the inner side of the bottom of the die workpiece, a plurality of pairs of positioning grooves 12 distributed in a circular array are provided on the processing table 1 around the sinking groove 11, an elastic clamping component 3 is provided in the positioning groove 12, a positioning cover 31 in threaded connection with the positioning groove is provided at the top of the elastic clamping component 3, a plurality of radial sliders 32 distributed in a circular array are provided inside the elastic clamping component 3, a guide groove 38 movably matched with the radial slider 32 is provided inside the elastic clamping component 3, a reset groove 381 for resetting the clamping head is provided at one end of the guide groove 38 facing the clamping head, a shaft sleeve 39 is arranged in the guide groove 38, an annular electromagnet 33 is arranged at the rear end of the radial sliding block 32, a shaft shoulder 34 is arranged on the side surface of the radial sliding block 32, a spring 35 is arranged between the shaft shoulder 34 and the electromagnet 33, a clamping joint 36 is arranged at the front end of the radial sliding block 32, the longitudinal section of the clamping joint 36 is trapezoidal, a positioning hole 37 is arranged at the center of the elastic clamping component 3, a positioning rod 4 used for connecting a die workpiece and a machining table is arranged in the positioning hole 37, a clamping groove 41 matched with the clamping joint is arranged on the side surface of the positioning rod 4, and a guide chamfer 42 is arranged at the bottom of the positioning. Wherein, the connecting hole on the mould work piece 2 is the bolt hole connected with the bolt in the prior art, and the inside of the connecting hole is extended into the positioning rod 4 without threads in the device to establish connection with the elastic clamping assembly 3 on the processing table. The connecting mode is not only suitable for shell type die workpieces, but also suitable for solid type die tools, and establishes connection in an automatic clamping mode, so that the practicability is high, and the production efficiency is improved. Specifically, the die workpiece 2 is connected with the sinking groove 11 through the clamping protrusion 22, the specific centering is realized by the positioning rod 4 and the elastic clamping assembly 3, if the positioning rod 4 penetrates through the connecting hole 21 and extends into the positioning hole 37 of the elastic clamping assembly, the positioning rod 4 is continuously pressed downwards until the guide chamfer 42 of the positioning rod contacts the clamping head 36, the clamping head 36 is compressed to return the positioning groove 381 under the action of the spring 35 and the guide chamfer 42, and the clamping head 36 is automatically clamped into the clamping groove 41 under the action of the spring 35 until the positioning rod 4 reaches the position limit, so that the positioning rod is stably fixed by a trapezoidal structure, and the device is provided with a plurality of pairs of positioning rods 4 for positioning, thereby effectively improving the centering effect on the die workpiece 2, facilitating the processing of the die workpiece 2 and improving the production efficiency. Furthermore, the electromagnet 35 can be attracted after being electrified, and can attract the radial slide block 32, so that the clamping joint 36 leaves the clamping groove 41 to release the positioning rod 4, and the positioning rod 4 can be pulled out of the die workpiece manually or under the action of a manipulator. The connection form of the electromagnet 35 and the power supply and the installation form of the electric wire are not limited, and the electromagnet may be electrically connected to the machine tool power supply or an independent power supply, for example, the electromagnet is embedded in the top surface of the machining table in a concealed installation form. The positioning cover 31 is screwed with the positioning groove 12 to stably fix the elastic clamping assembly 3 on the processing table 1, and the surface of the processing table 1 is kept in a flat state except for necessary structures.

In order to improve the production efficiency, the utility model discloses an identical top to two locating levers in the constant head tank 12 is provided with a curved connecting rod 5, and two locating lever intervals of same centering are less than the interval of per two pairs of locating levers moreover. Like this, can reduce the connection operation of registration arm under the prerequisite of increasing connected node, be favorable to improving production efficiency.

In order to reduce the production degree of difficulty of elasticity joint subassembly, the utility model discloses elasticity joint subassembly 3 adopts the structure of assembled, if whole last joint body 311 and the lower joint body 312 that adopts the longitudinal symmetry setting, the guide way 38 sets up on the butt joint face of last joint body 311 and lower joint body 312, goes up the joint body 311 and is provided with the mounting groove that is used for placing the electro-magnet on the joint body 312 down. Therefore, the processing difficulty of the guide groove 38, the reset groove 381 and the mounting groove can be greatly improved, the radial slide block 32 is conveniently arranged in the guide groove 38, and the shaft shoulder 34 is effectively matched with the spring 35.

For conveniently adjusting the positioning cover 31, and considering that the positioning cover 31 can not protrude out of the table-board of the processing table 1, therefore the utility model provides a top surface of the positioning cover 31 is provided with the inner hexagonal groove 310, utilizes the hexagonal wrench to install the pressfitting to it, and the whole elastic clamping assembly is installed basically not to be dismantled down after the processing table except for changing.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. A gravity die automatic centering tool comprises a processing table for placing a die workpiece, wherein a connecting hole is formed in the edge of the top of the die workpiece, and the tool is characterized in that a sunken groove is formed in the center of the top surface of the processing table and matched with a clamping bulge arranged on the inner side of the bottom of the die workpiece, a plurality of positioning grooves distributed in a circular array are formed in the processing table around the sunken groove, an elastic clamping assembly is arranged in each positioning groove, a positioning cover in threaded connection with the positioning grooves is arranged at the top of the elastic clamping assembly, a plurality of radial sliding blocks distributed in the circular array and guide grooves for the radial sliding blocks to move are formed in the elastic clamping assembly, a shaft sleeve is arranged in each guide groove, an annular electromagnet is arranged at the rear end of each radial sliding block, a shaft shoulder is arranged on the side surface of each radial sliding block, and a spring is arranged between each shaft shoulder and the electromagnet, the front end of radial slider is provided with the joint, the longitudinal section of joint is trapezoidal, the guide way is provided with the groove that resets that supplies the joint to reset at its one end towards the joint, the center of elasticity joint subassembly is provided with the locating hole, be provided with the locating lever that is used for connecting mould work piece and processing platform in the locating hole, be provided with on the side of locating lever with joint complex joint groove, the bottom of locating lever is provided with the direction chamfer.

2. The gravity die automatic centering tool according to claim 1, wherein an arc-shaped connecting rod is arranged at the top of two positioning rods in the same pair of positioning grooves, and the distance between the two positioning rods in the same pair is smaller than the distance between every two pairs of positioning rods.

3. The gravity die automatic centering tool according to claim 2, wherein the elastic clamping component comprises an upper clamping body and a lower clamping body which are symmetrically arranged up and down, the guide groove is formed in the butt joint surface of the upper clamping body and the lower clamping body, and mounting grooves for placing electromagnets are formed in the upper clamping body and the lower clamping body.

4. The gravity die self-centering tool according to claim 3, wherein the top surface of the positioning cover is provided with an internal hexagonal groove.