Shell processing and positioning structure

Abstract

A shell machining positioning structure comprises a tool positioning seat and a positioning clamp assembly, the positioning clamp assembly comprises a shell outer positioning assembly and a shell inner positioning assembly, a shell to be machined is placed on the shell inner positioning assembly, an inner cavity is formed in the shell to be machined, one end of the shell inner positioning assembly is connected with the tool positioning seat, and the other end of the shell inner positioning assembly is connected with the tool positioning seat. One end of the shell inner positioning assembly is connected with the tool positioning seat, the other end of the shell inner positioning assembly extends into the inner cavity to be connected with a shell to be machined, one end of the shell outer positioning assembly is connected with the tool positioning seat, and the other end of the shell outer positioning assembly presses the outer wall of the shell to be machined. The shell can be kept stable in the machining process, and machining errors caused by inaccurate positioning are avoided. And meanwhile, the inner positioning assembly and the outer positioning assembly are used in cooperation, the positioning accuracy and reliability are improved, and the machining quality is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, concretely relates to a casing processing positioning structure. BACKGROUND

[0002] In prior art, because the sand core is separated from the outer mold when the casing casting is cast, there is a large error in the relative size of the inner cavity and the surface of the shape. If the inner hole is positioned, the shape is oriented, and the large plane is supported, the positioning error is easily affected by the manufacturing precision of the blank itself, which leads to that the part arc runway surface processing is not in place, and the drawing requirement is not reached. SUMMARY

[0003] Therefore, the utility model provides a casing processing positioning structure.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A casing processing positioning structure, including frock positioning seat and positioning fixture assembly, the positioning fixture assembly includes casing outer positioning assembly and casing inner positioning assembly, the casing inner positioning assembly is placed with the casing to be processed, the casing to be processed forms the inner cavity, one end of the casing inner positioning assembly is connected with frock positioning seat, the other end is connected with the casing to be processed in the inner cavity, one end of the casing outer positioning assembly is connected with frock positioning seat, the other end of the casing outer positioning assembly is pressed tightly the outer wall of the casing to be processed.

[0006] Preferably, the inner wall of the casing to be processed has an arc runway, the casing inner positioning assembly includes an inner positioning member body, a runway positioning member and a support member, a positioning groove is formed in the inner positioning member body, one end of the runway positioning member is inserted into the positioning groove and connected with the inner positioning member body, a spring groove is formed in one end of the runway positioning member inserted into the positioning groove, a spring is arranged in the spring groove, the two ends of the spring are respectively abutted against the frock positioning seat and the groove wall of the spring groove, an arc-shaped end corresponding to the arc runway is arranged at one end of the runway positioning member away from the spring, and the arc-shaped end abuts against the arc runway and the casing to be processed.

[0007] Preferably, a support insertion groove is formed in the center of the top end of the inner positioning member body, one end of the support member is inserted into the support insertion groove and connected with the inner positioning member body, and the other end of the support member abuts against the top of the inner wall of the casing to be processed.

[0008] Preferably, the casing outer positioning assembly includes a plurality of outer positioning units, the outer surface of the casing to be processed has a plurality of plane structures, one end of the outer positioning unit is connected with the frock positioning seat, and the other end of the outer positioning unit is pressed tightly against the corresponding plane structure.

[0009] Preferably, the outer positioning unit comprises a positioning column, a positioning block, a supporting rod and a supporting spring, the positioning column and the supporting rod are arranged on a tool positioning seat, the top end of the positioning column is connected with the positioning block, one end of the supporting rod penetrates through the positioning block, the supporting spring is sleeved on the part of the supporting rod between the positioning block and the tool positioning seat, and the end of the positioning block away from the positioning column is pressed against the plane structure.

[0010] Preferably, the top end of the positioning column is provided in a triangular structure, a triangular positioning groove corresponding to the positioning column is formed in the positioning block, and the top end of the positioning column extends into the triangular positioning groove and abuts against the positioning block.

[0011] Preferably, the inner positioning member body comprises an upper positioning block and a lower positioning block, the positioning groove is formed in the upper positioning block, the supporting member is arranged at the top end of the upper positioning block and connected with the upper positioning block, and the lower positioning block has a small-diameter part connected with the upper positioning block and a large-diameter part used for abutting against the bottom end face of the shell to be machined.

[0012] The shell inner positioning assembly and the shell outer positioning assembly are arranged to realize double positioning of the shell, so that the shell can be kept stable during machining and machining errors caused by inaccurate positioning are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0014] FIG. 1 is a schematic view of a shell inner positioning assembly structure; Figure 1 FIG. 2 is a schematic view of a shell outer positioning assembly structure;

[0015] FIG. 3 is a schematic view of a shell to be machined and a positioning fixture assembly connected; Figure 2 FIG. 4 is an exploded schematic view of the shell to be machined and the positioning fixture assembly;

[0016] FIG. 5 is a schematic view of the inside of the shell to be machined and a runway positioning member connected; Figure 3 FIG. 6 is an exploded schematic view of the inside of the shell to be machined and the runway positioning member connected.

[0017] FIG. 7 is a schematic view of a shell inner positioning assembly structure; Figure 4 FIG. 8 is a schematic view of a shell outer positioning assembly structure. DETAILED DESCRIPTION

[0018] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made, belong to the scope of protection of the present application.

[0019] The present application will be further described below in conjunction with the drawings of the specification.

[0020] The present application provides the following technical solutions:

[0021] As shown in the accompanying Figures 1-4 The present application discloses a shell machining positioning structure, which comprises a tool positioning seat 1 and a positioning clamp assembly, the positioning clamp assembly comprises a shell outer positioning assembly 2 and a shell inner positioning assembly 3, the shell inner positioning assembly 3 is provided with a shell to be machined 4, the shell to be machined 4 is formed with an inner cavity 5 with an opening downward, one end of the shell inner positioning assembly 3 is connected with the tool positioning seat 1, and the other end extends into the inner cavity 5 and is connected with the shell to be machined 4, one end of the shell outer positioning assembly 2 is connected with the tool positioning seat 1, and the other end of the shell outer positioning assembly 2 is pressed against the outer wall of the shell to be machined 4.

[0022] The working principle of the design is as follows:

[0023] The shell to be machined 4 is fixed on the shell inner positioning assembly 3 through the inner cavity 5 with the opening downward, and in the process of pushing the shell to be machined 4, the circular track 6 will contact the track positioning piece 7 before the top inner wall of the inner cavity 5; the positioning piece body 8 is provided with a positioning groove 9, the lower part of the positioning groove 9 is provided with a spring 10, and the upper part is provided with the track positioning piece 7; the track positioning piece 7 will move downward along the direction of the positioning groove 9 of the positioning piece body 8, perpendicular to the plane formed by the supporting nail 11; the lower positioning block 24 is in contact with the end face hole of the shell to be machined 4, until the bottom is pushed to be in contact with the plane formed by the supporting nail 11, the shell to be machined 4 is locked in place.

[0024] Since the lower part of the positioning groove 9 is provided with the spring 10, at this time the track positioning piece 7 is subjected to the upward force of the spring 10, the circular arc surface of the shell to be machined 4 contacts the track positioning piece 7, so that the track positioning piece 7 can be closely attached to the circular track of the shell to be machined, and plays a directional role; because the spring 10 has the characteristics of being stretchable, at the same time, over-positioning in the height direction is avoided. After the shell to be machined 4 is machined, the spring 10 can push the track positioning piece 7 to automatically reset; the track positioning piece 7 is provided with a limiting groove 12, a side screw (not shown in the figure) is screwed into the limiting groove 12 to limit the extension and retraction stroke of the track positioning piece 7, and the track positioning piece 7 is prevented from falling off during the process of taking out the shell to be machined 4.

[0025] Further, the inner wall of the shell 4 to be processed has a circular arc track 6, the shell inner positioning assembly 3 comprises an inner positioning body 8, a track positioning piece 7 and a supporting piece 13, the inner positioning body 8 is provided with a positioning groove 9, one end of the track positioning piece 7 extends into the positioning groove 9 and is connected with the inner positioning body 8, a spring groove 27 is formed in the end of the track positioning piece 7 extending into the positioning groove 9, a spring 10 is arranged in the spring groove 27, and the two ends of the spring 10 abut against the tool positioning seat 1 and the groove wall of the spring groove 27 respectively. The arc-shaped end 14 corresponding to the circular arc track 6 is arranged at the end of the track positioning piece 7 away from the spring 10, and the arc-shaped end 14 abuts against the circular arc track 6 and is connected with the shell 4 to be processed. Specifically, in the embodiment, the track positioning piece 7 is used to abut against the circular arc track 6 on the inner wall of the shell 4 to be processed, and the spring 10 is arranged to ensure that the circular arc track 6 of the shell 4 to be processed and the track positioning piece 7 are in close contact during the processing, so that accurate positioning is realized. The spring 10 not only provides necessary elastic force for the positioning piece to ensure that the positioning piece can adapt to different sizes of the shell 4 to be processed, but also helps the track positioning piece 7 to automatically reset after the processing is completed, reduces the labor intensity of the operator, and improves the production efficiency. In addition, the limiting groove 12 and the side screw are arranged to accurately control the extension range of the track positioning piece 7, avoid accidental falling of the positioning piece when the shell 4 to be processed is taken out, and ensure the safety and reliability of the entire processing process.

[0026] Further, the inner wall of the shell 4 to be processed has a circular arc track 6, the inner wall of the shell 4 to be processed has a circular arc track 6, the shell inner positioning assembly 3 comprises an inner positioning body 8, a track positioning piece 7 and a supporting piece 13, the inner positioning body 8 is provided with a positioning groove 9, one end of the track positioning piece 7 extends into the positioning groove 9 and is connected with the inner positioning body 8, a spring groove 27 is formed in the end of the track positioning piece 7 extending into the positioning groove 9, a spring 10 is arranged in the spring groove 27, and the two ends of the spring 10 abut against the tool positioning seat 1 and the groove wall of the spring groove 27 respectively. The arc-shaped end 14 corresponding to the circular arc track 6 is arranged at the end of the track positioning piece 7 away from the spring 10, and the arc-shaped end 14 abuts against the circular arc track 6 and is connected with the shell 4 to be processed. Specifically, in the embodiment, the track positioning piece 7 is used to abut against the circular arc track 6 on the inner wall of the shell 4 to be processed, and the spring 10 is arranged to ensure that the circular arc track 6 of the shell 4 to be processed and the track positioning piece 7 are in close contact during the processing, so that accurate positioning is realized. The spring 10 not only provides necessary elastic force for the positioning piece to ensure that the positioning piece can adapt to different sizes of the shell 4 to be processed, but also helps the track positioning piece 7 to automatically reset after the processing is completed, reduces the labor intensity of the operator, and improves the production efficiency. In addition, the limiting groove 12 and the side screw are arranged to accurately control the extension range of the track positioning piece 7, avoid accidental falling of the positioning piece when the shell 4 to be processed is taken out, and ensure the safety and reliability of the entire processing process.

[0027] Further, the shell external positioning assembly 2 comprises a plurality of external positioning units 17, the outer surface of the shell to be processed 4 has a plurality of planar structures 16, one end of the external positioning unit 17 is connected with the tool positioning seat 1, and the other end of the external positioning unit 17 is pressed against the corresponding planar structure 16. Specifically, in the embodiment, through the arrangement of the external positioning unit 17, the position of the shell to be processed 4 during processing can be ensured to be fixed, and processing errors caused by shell movement can be avoided. The connection mode of the external positioning unit 17 and the tool positioning seat 1 is designed to be firm and easy to adjust, so as to adapt to shells of different sizes and shapes. The pressing force of each external positioning unit 17 can be finely adjusted through the adjusting mechanism, so as to adapt to shells of different materials and ensure uniform distribution of the pressing force, thereby improving the stability and repeatability of processing.

[0028] Further, the external positioning unit 17 comprises a positioning column 18, a positioning pressing block 19, a supporting rod 20 and a supporting spring 21, the positioning column 18 and the supporting rod 20 are both arranged on the tool positioning seat 1, the top end of the positioning column 18 is connected with the positioning pressing block 19, one end of the supporting rod 20 penetrates through the positioning pressing block 19, the supporting spring 21 is sleeved on the part of the supporting rod 20 between the positioning pressing block 19 and the tool positioning seat 1, and the end of the positioning pressing block 19 away from the positioning column 18 presses the planar structure 16. Specifically, in the embodiment, the positioning pressing block 19 is designed to be replaceable, so as to replace pressing blocks of different sizes or shapes according to different processing needs, thereby improving the adaptability and flexibility of the equipment. The supporting spring 21 is used to provide a constant pressing force, so as to ensure stable contact between the shell and the positioning unit during processing and reduce processing errors caused by vibration or movement. Through this design, the external positioning unit 17 can effectively fix the shell to be processed 4, ensure processing accuracy and repeatability, and facilitate operators to adjust positioning parameters according to actual processing conditions.

[0029] Further, the top end of the positioning column 18 is arranged in a triangular structure, a triangular positioning groove 22 corresponding to the positioning column 18 is formed on the positioning pressing block 19, and the top end of the positioning column 18 extends into the triangular positioning groove 22 and abuts against the positioning pressing block 19. Specifically, in the embodiment, the triangular structure design of the top end of the positioning column 18 makes the positioning more accurate, and the cooperation of the triangular positioning groove 22 and the top end of the positioning column 18 can effectively prevent the positioning column 18 from rotating or moving during processing, thereby ensuring the stability and reliability of the positioning.

[0030] Further, the inner positioning member body 8 comprises an upper positioning block 23 and a lower positioning block 24, the positioning groove 9 is arranged on the upper positioning block 23, the support 13 is arranged on the top end of the upper positioning block 23 and connected with the upper positioning block 23, and the lower positioning block 24 has a small-diameter part 25 connected with the upper positioning block 23 and a large-diameter part 26 used for abutting against the bottom end face of the shell 4 to be machined. Specifically, in the embodiment, the outer diameter of the large-diameter part 26 is larger than the outer diameter of the small-diameter part 25, the upper positioning block 23 and the lower positioning block 24 are fixed by screw connection, and when the shell 4 to be machined is gradually fixed on the positioning member body 8, the bottom end face of the shell 4 to be machined first contacts the outer surface of the large-diameter part 26.

[0031] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A housing machining positioning structure, characterized by: The utility model provides a positioning device for shell machining, which comprises a tool positioning seat and a positioning clamp assembly, the positioning clamp assembly comprises a shell outer positioning assembly and a shell inner positioning assembly, a shell to be machined is placed on the shell inner positioning assembly, the shell to be machined forms an inner cavity, one end of the shell inner positioning assembly is connected with the tool positioning seat, the other end of the shell inner positioning assembly extends into the inner cavity and is connected with the shell to be machined, one end of the shell outer positioning assembly is connected with the tool positioning seat, and the other end of the shell outer positioning assembly is pressed against the outer wall of the shell to be machined.

2. The housing machining positioning structure according to claim 1, characterized by: The inner wall of the shell to be machined has a circular arc raceway, the shell inner positioning assembly comprises an inner positioning member body, a raceway positioning member and a support member, a positioning groove is formed in the inner positioning member body, one end of the raceway positioning member extends into the positioning groove and is connected with the inner positioning member body, a spring groove is formed in the end of the raceway positioning member extending into the positioning groove, a spring is arranged in the spring groove, the two ends of the spring are respectively abutted against the tool positioning seat and the groove wall of the spring groove, and an arc-shaped end corresponding to the circular arc raceway is arranged at the end of the raceway positioning member away from the spring, the arc-shaped end is abutted against the circular arc raceway and the shell to be machined.

3. The housing machining positioning structure according to claim 2, characterized by: A support insertion groove is formed in the center of the top end of the inner positioning member body, one end of the support member extends into the support insertion groove and is connected with the inner positioning member body, and the other end of the support member is abutted against the top of the inner wall of the shell to be machined.

4. The housing machining positioning structure according to claim 1, characterized by: The shell outer positioning assembly comprises a plurality of outer positioning units, the outer surface of the shell to be machined has a plurality of planar structures, one end of the outer positioning unit is connected with the tool positioning seat, and the other end of the outer positioning unit is pressed against the corresponding planar structure.

5. The housing machining positioning structure according to claim 4, characterized by: The outer positioning unit comprises a positioning column, a positioning pressing block, a support rod and a support spring, the positioning column and the support rod are arranged on the tool positioning seat, the top end of the positioning column is connected with the positioning pressing block, one end of the support rod penetrates through the positioning pressing block, the support spring is sleeved on the part of the support rod between the positioning pressing block and the tool positioning seat, and the end of the positioning pressing block away from the positioning column is pressed against the planar structure.

6. The housing machining positioning structure according to claim 5, characterized by: The top end of the positioning column is provided in a triangular structure, a triangular positioning groove corresponding to the positioning column is formed in the positioning pressing block, and the top end of the positioning column extends into the triangular positioning groove and is abutted against the positioning pressing block.

7. The housing machining positioning structure according to claim 2, characterized by: The inner positioning member body comprises an upper positioning block and a lower positioning block, the positioning groove is formed in the upper positioning block, the support member is arranged at the top end of the upper positioning block and is connected with the upper positioning block, and the lower positioning block has a small-diameter part connected with the upper positioning block and a large-diameter part used for abutting against the end face of the bottom end of the shell to be machined.

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