Device for manufacturing round counterbore of evanescent mode model

Abstract

The utility model discloses a device for manufacturing a round counterbore of an evanescent mode model, which comprises a handle, a positioning head is fixedly connected to the end of the handle, a heating wire is arranged on the positioning head, and a height adjusting structure is arranged on the positioning head. And the counterbore is high in size precision.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of lost foam casting, specifically, the utility model relates to a device for making round countersunk hole of lost foam model. BACKGROUND

[0002] With the increasing development of diversified casting process, the lost foam casting process has become the main production mode of the casting industry. Foam model making is the first process of the lost foam casting process, and the model making efficiency and quality directly affect the quality of casting production.

[0003] At present, the number of lining plate castings such as coking, sintering and ironmaking units in the produced lost foam castings is large, and the batch is large. The structural characteristics of this plate-shaped product are that the mounting holes are provided with round countersunk holes. The existing method for making countersunk holes is unreasonable, which affects the production efficiency and product quality. The method for making round countersunk holes at present is to cut by using a heating wire to contact a hard paperboard. According to different sizes of the countersunk holes, hard paperboards must be used for lofting, and special tools are also needed for trimming the lofting board, which is time-consuming and laborious. The lofting board must be fixed on the upper surface of the model blank, which is easy to be misaligned. The lofting board needs to be removed every time a countersunk hole is dug, which is time-consuming and laborious. The hard paper lofting board is easy to be burned by the heating wire, which affects the surface quality and size accuracy of the model countersunk hole.

[0004] The utility model patent with publication number CN205763711U discloses a tool for making holes on a lost foam on December 7, 2016, and the name is a tool for making holes on a lost foam, which comprises a model knife and a sliding rod. The model knife is in a cylindrical shape. The lower end of the model knife is open, and the upper end is provided with a top plate. The inner wall of the opening of the model knife is in a conical shape with a diameter gradually increasing from top to bottom. The diameter of the top plate is larger than the outer diameter of the model knife. The edges of the top plate are uniformly distributed with at least two notches. The center of the top plate is provided with a model hole. The sliding rod passes through the model hole and is in sliding cooperation with the model hole. The upper end of the sliding rod is provided with a circular plate. The lower end of the sliding rod is provided with a circular sliding rod seat. The sliding rod seat is coaxially arranged with the sliding rod. The diameter of the sliding rod seat is smaller than the inner diameter of the model knife. The sliding rod seat is fixedly connected with a brush around the edge of the sliding rod seat. The lower surface of the sliding rod seat is fixedly installed with a plurality of downward extending nails. The distance between at least two nails in the plurality of nails and the center axis of the model knife is different. The tool for making holes on a lost foam cannot solve the technical problems described above. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiencies of the prior art, and provides a device for making round countersunk hole of lost foam model, which has the advantages of simple structure, improved working efficiency and high size accuracy of countersunk hole.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that

[0007] The device for manufacturing round countersunk hole of lost foam pattern comprises a handle, a positioning head fixedly connected to the end of the handle, a heating wire arranged on the positioning head, and a height adjusting structure arranged on the positioning head.

[0008] The height adjusting structure comprises a clamping groove penetrating through both sides and the bottom end of the positioning head, and the middle part of the heating wire is located in the clamping groove, and the two ends of the heating wire are located outside the clamping groove.

[0009] The top end of the positioning head is provided with a positioning step, the positioning step is provided with a supporting rod, the middle part of the supporting rod is in contact with the positioning step, and the supporting rod is connected with the handle through a screw; the two ends of the supporting rod are provided with fixed clamps, and the fixed clamps are used for pressing the ends of the heating wire.

[0010] The positioning head is in a cylindrical structure, the heating wire is symmetrically arranged about the axis of the positioning head, and the middle part of the heating wire is in a U-shaped structure.

[0011] The supporting rod and the positioning head are arranged in a T-shaped mode.

[0012] The positioning head and the handle are in an integrated structure.

[0013] The handle and the supporting rod are both insulating wooden strips.

[0014] The lost foam pattern comprises a pattern hole, the positioning head is in contact with the inner wall of the pattern hole, and the bottom end of the supporting rod is in contact with the upper end surface of the lost foam pattern.

[0015] The device for manufacturing round countersunk hole of lost foam pattern has the technical effects that the device replaces the traditional heating wire contact hardboard-like operation mode, saves the trimming and fixing of the sample board, improves the work efficiency, the positioning head and the supporting rod are used for positioning, the heating wire is prevented from being dislocated, the size precision of the countersunk hole is ensured, the size and the depth of the countersunk hole do not need to be rechecked, the heating wire is fixed through the clamping groove, the height of the heating wire can be adjusted, the countersunk hole of different heights and sizes can be processed, the heating wire is in a U-shaped structure, the countersunk hole can be formed only by rotating 180°, and the work efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present specification comprises the following drawings, and the shown contents are as follows:

[0017] Figure 1 It is a structure schematic view of the device for manufacturing round countersunk hole of lost foam pattern of the utility model;

[0018] Figure 2 It is a side view of the device of the utility model;

[0019] Figure 3 It is an operation schematic view of the device of the utility model.

[0020] Marked in the figure: 1, handle; 2, positioning head; 3, heating wire; 4, support rod; 5, clamping groove; 6, fixed clamp; 7, positioning step; 8, screw; 9, lost foam model; 10, model hole. DETAILED DESCRIPTION

[0021] The specific embodiments of the present application are further described in detail below with the accompanying drawings, by describing the embodiments, for the purpose of helping the skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present application, and to facilitate its implementation.

[0022] As Figures 1 to 3 shown, the device for making lost foam model circular countersunk hole, including handle 1, handle 1 end fixedly connected with positioning head 2, positioning head 2 is equipped with heating wire 3, positioning head 2 is equipped with height adjusting structure. Handle 1 facilitates the hand of the operator to pick up, avoid hand directly contact heating wire 3, provide convenience and safety, positioning head 2 utilizes clamping groove 5 to form clamping to heating wire 3, and satisfies the height adjustment of heating wire 3, positioning head 2 is used to extend into model hole 10, heating wire 3 is powered on to cut the model material to form the required counterbore by using its high temperature and the rotation of handle 1.

[0023] As Figure 1 shown, the height adjusting structure includes clamping groove 5, clamping groove 5 penetrates both sides and bottom end of positioning head 2, heating wire 3 is located in clamping groove 5 in the middle, and both ends of heating wire 3 are located outside clamping groove 5. Clamping groove 5 is located in the middle of positioning head 2, setting clamping groove 5 can clamp heating wire 3, realize the adjustment of the position of heating wire 3, so as to satisfy the processing of different depth countersunk hole, clamping groove 5 penetrating the bottom end of positioning head 2 realizes the installation process of heating wire 3 from the bottom of positioning head 2, the operation of adjusting the shape position of heating wire 3 is simple and labor-saving, and heating wire 3 is conveniently arranged symmetrically with the axis of positioning head 2.

[0024] As Figure 1 shown, the top end of positioning head 2 is provided with positioning step 7, the positioning step 7 is provided with support rod 4, the middle bottom end of support rod 4 is in contact with positioning step 7, and the screw 8 is connected between support rod 4 and handle 1; the both ends of support rod 4 are provided with fixed clamp 6, and the end part of heating wire 3 is pressed tightly by fixed clamp 6. The positioning step 7 improves the installation levelness of the support rod 4, the support rod 4 is fastened on the handle 1 by using the screw 8, so that the posture of the heating wire 3 pressed tightly by the fixed clamp 6 is stable, the position of the heating wire 3 is stabilized, the forming precision of the countersunk hole is ensured, and the both ends of the heating wire 3 extending from the fixed clamp 6 are used for connecting the power supply unit.

[0025] As Figure 1As shown, the positioning head 2 is a cylindrical structure, the heating wire 3 is symmetrically arranged about the axis of the positioning head 2, and the middle part of the heating wire 3 is in a U-shaped structure. The cylindrical positioning head 2 is adapted to the model hole 10, facilitating smooth rotation without obstruction in the model hole 10 and being conducive to keeping the overall device in a vertical posture. The heating wire 3 is designed in a U-shaped structure, and a sunken hole can be processed by rotating only 180 degrees, thereby improving work efficiency.

[0026] As shown in the drawings, Figure 1 The support rod 4 and the positioning head 2 are arranged in a T-shaped manner. With the above structure, when the positioning head 2 extends into the model hole 10, the bottom end of the support rod 4 will contact the upper end face of the model, providing a planar positioning effect for the handle 1, and further improving the forming precision of the sunken hole.

[0027] As shown in the drawings, Figures 1 to 3 The positioning head 2 and the handle 1 are in an integrated structure. A step surface is formed on the cylindrical wooden strip by cutting, thereby forming the positioning head 2 and the handle 1, which are easy to manufacture and simple to process.

[0028] The handle 1 and the support rod 4 are both insulating wooden strips. The use of insulating wooden strips provides protection for the operator and is low in material cost.

[0029] As shown in the drawings, Figure 3 The lost foam model 9 includes the model hole 10, the positioning head 2 contacts the inner wall of the model hole 10, and the bottom end of the support rod 4 contacts the upper end face of the lost foam model 9. The above structure is the structure of the device for making a circular sunken hole on the lost foam model. The positioning head 2 and the support rod 4 enable the overall device to achieve positioning effect in the axial and radial directions, ensuring the dimensional accuracy of the sunken hole and saving the subsequent inspection process. After the positioning head 2 contacts the model hole 10 and the support rod 4 contacts the upper end face of the rear lost foam model, the heating wire 3 can form a sunken hole by cutting the model material at high temperature by rotating the handle 1.

[0030] The device is used as follows: according to the required size and depth of the sunken hole, the bending length of the middle part of the heating wire 3 and the position of the heating wire 3 in the clamping groove 5 are adjusted, the fixed clamp 6 is used to press the two ends of the heating wire 3, the positioning head 2 is inserted into the model hole 10 while the heating wire 3 is electrified, the handle 1 is rotated by 180 degrees, and the device is taken out, and the sunken hole is naturally formed.

[0031] The device for making a circular sunken hole on a lost foam model replaces the traditional operation mode of contacting a hardboard-like sample by the heating wire 3, saves the operation of trimming and fixing the sample, and improves work efficiency. Through the positioning of the positioning head 2 and the support rod 4, the heating wire 3 is prevented from being misaligned, ensuring the dimensional accuracy of the sunken hole and eliminating the need for re-inspection of the size and depth of the sunken hole. The height of the heating wire 3 is adjustable through the clamping groove 5, which can adapt to the processing of sunken holes of different heights and sizes. The heating wire 3 adopts a U-shaped structure, and only needs to be rotated by 180° to form a sunken hole, thereby being high in work efficiency.

[0032] The utility model has been described above in conjunction with the drawings. Obviously, the utility model is not limited by the above-mentioned mode in its specific implementation. As long as various non-essential improvements are made using the method concept and technical solution of the utility model; or without improvement, the above-mentioned concept and technical solution of the utility model are directly applied to other occasions, which are within the protection scope of the utility model.

Claims

1. An apparatus for producing a circular countersunk hole in a lost foam casting model, characterized in that: The utility model relates to a heating device for lost foam casting, including handle (1), handle (1) end fixed connection has location head (2), be equipped with heating wire (3) on location head (2), be equipped with height adjusting structure on location head (2), height adjusting structure includes the clamping groove (5), clamping groove (5) penetrates both sides and bottom end of location head (2), heating wire (3) middle part is located in clamping groove (5), and heating wire (3) both ends are located outside clamping groove (5), location head (2) top end is equipped with location step (7), and location step (7) is equipped with support rod (4), and support rod (4) middle part bottom end is in contact with location step (7), and support rod (4) is connected with screw (8) of handle (1), support rod (4) both ends are equipped with fixed clip (6), and fixed clip (6) is pressed tightly heating wire (3) end.

2. The apparatus for making round countersink holes in an EMM model according to claim 1, wherein: The location head (2) is a cylindrical structure, the heating wire (3) is symmetrically arranged about the axis of the location head (2), and the middle part of the heating wire (3) is a U-shaped structure.

3. The apparatus for making round countersink holes in lost foam patterns according to claim 1 wherein: The support rod (4) and the location head (2) are arranged in a T shape.

4. The apparatus for making a round countersink hole in an expendable mold model according to claim 2, wherein: The location head (2) and the handle (1) are an integral structure.

5. The apparatus for making a round countersink hole in an expendable mold model according to claim 4, wherein: The handle (1) and the support rod (4) are both insulating wooden strips.

6. The apparatus for making a round countersink hole in an expendable mold model according to claim 3, wherein: The lost foam model (9) includes a model hole (10), the location head (2) is in contact with the inner wall of the model hole (10), and the bottom end of the support rod (4) is in contact with the upper end surface of the lost foam model (9).

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