Supporting and positioning jigs for irregularly shaped casings

Abstract

The utility model discloses a support positioning clamp of special-shaped shell is used for clamping to part, and it is personally experienced sth, including: bottom plate and interval installation above bottom plate's base plate, and part includes arc cover plate, and the edge of arc cover plate has a downward extending side plate, and the lower end of side plate forms a horizontal outward extending flanging strip, and the upper surface of the loading plate installed on the upper surface of base plate is provided with a plurality of profiled pads and a plurality of support pads, and the front of arc cover plate and the above profiled pad have a hole to be processed, and arc cover plate and the side of the hole to be processed close to side plate have at least one product through -hole, thereby forming a muscle strip part between product through -hole and the hole to be processed, and the upper surface of base plate and the directly below of every product through -hole are provided with a press -hold pneumatic cylinder. The utility model discloses a support positioning clamp of special-shaped shell can avoid the partial shaking of the deviation activity of part in the processing, and the deformation leads to the situation of the vibration of sword, improves the precision and quality of processing.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, and in particular to a support and positioning fixture for an irregularly shaped shell. Background Technology

[0002] CNC is short for Computer Numerical Control, referring to a type of automated mechanical numerical control machine tool controlled by a program. The CNC control system can logically process programs with control codes or other symbolic instructions, decode them, represent them with coded numbers, input them to the numerical control device via an information carrier, and then the numerical control device sends control signals to control the machine tool's movements to machine the parts. For CNC machining of irregularly shaped parts (such as gearbox housings), the assembly of the support and positioning fixture for the irregularly shaped housing plays a crucial role. However, in existing technologies, the support and positioning fixtures for irregularly shaped housings may cause the clamped irregularly shaped parts to shift during machining, leading to localized vibration and deformation, thereby reducing the accuracy and quality of the irregularly shaped parts. Utility Model Content

[0003] The main purpose of this utility model is to provide a support and positioning fixture for irregularly shaped shells, which can avoid the situation of local vibration and deformation of parts during the processing, thereby improving the processing accuracy and quality.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a support and positioning fixture for irregularly shaped shells, used for clamping parts, comprising: a base plate and a base plate spaced above the base plate; the part includes an inclined arc-shaped cover plate, and a side plate extending downward at the front edge of the arc-shaped cover plate where the front end is higher than the rear end, thereby forming a shell cavity between the side plate and the arc-shaped cover plate; a horizontally outwardly extending flange strip is formed at the lower end of the side plate, and the lower surface of the flange strip is flush with the lower end face at the rear edge of the arc-shaped cover plate; a carrier plate mounted on the upper surface of the base plate is provided with a plurality of conforming pads that can be correspondingly embedded into the shell cavity of the part and in contact with the lower surface of the arc-shaped cover plate, and a plurality of support pads for contacting the lower surface of the flange strip on the part; The front part of the arc-shaped cover plate, above the contour pad, has a hole to be processed. The arc-shaped cover plate, on the side of the hole to be processed near the side plate, has at least one product through hole, thereby forming a rib between the product through hole and the hole to be processed. A pressing cylinder is provided on the upper surface of the substrate, directly below each product through hole. A rotating arm is installed on the upper end of the piston rod of the pressing cylinder. The other end of the rotating arm, one end of which is rotatably connected to the piston rod, is used to press and engage with the upper surface of the rib. A connecting rod is rotatably installed in the middle of the rotating arm. The lower end of the rotating arm, which is rotatably engaged with the upper end of the rotating arm, is rotatably connected to a connecting seat. The connecting seat is fixedly installed on the side of the piston rod of the pressing cylinder near the rib.

[0005] The following are further improvements to the above technical solution: 1. In the above solution, at least two mounting through holes are provided on the upper surface of the substrate and on the outside of the support pad. Each mounting through hole is provided with a spinning cylinder. The main body of the spinning cylinder is mounted on the substrate. The upper end of the piston rod of the spinning cylinder is located above the substrate and is equipped with a rocker arm. One end of the rocker arm is connected to the piston rod, and the other end is used to press and contact the upper surface of the flange strip on the part.

[0006] 2. In the above scheme, the connecting seat is fixedly installed on the upper end face of the main body of the pressure cylinder.

[0007] 3. In the above scheme, there are two of each of the holes to be processed and the holding cylinders.

[0008] 4. In the above scheme, the contour pad has several blanking through holes that match the holes to be processed.

[0009] 5. In the above scheme, the main body of the spinning cylinder is connected to the base plate by a mounting block.

[0010] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model relates to a support and positioning fixture for an irregularly shaped shell. The front of the arc-shaped cover plate, above the contour pad, has a hole to be processed. On the side of the arc-shaped cover plate near the hole to be processed, there is at least one product through-hole, forming a rib between the product through-hole and the hole to be processed. At least one second hole to be processed is provided at the rear edge of the arc-shaped cover plate. A holding cylinder is provided on the upper surface of the base plate, directly below each product through-hole. A rotating arm is mounted on the upper end of the piston rod of each holding cylinder. One end of the rotating arm is rotatably connected to the piston rod, and the other end of the rotating arm is used for pressing and engaging with the upper surface of the rib. A connecting rod is rotatably mounted in the middle of the rotating arm. The lower end of the rotating arm, which is rotatably engaged with the upper end of the rotating arm, is rotatably connected to a connecting seat. The connecting seat is fixedly mounted on the piston rod of the holding cylinder. Near the rib section, it can provide stable support for irregularly shaped parts to avoid damage to the parts during processing, and also avoid local vibration and deformation caused by the offset movement of the parts during processing, thus improving the processing accuracy and quality. Furthermore, at least two mounting through holes are opened on the upper surface of the base plate and on the outside of the support pad. Each mounting through hole is equipped with a spinning cylinder. The main body of the spinning cylinder is mounted on the base plate, and a rocker arm is mounted on the upper end of the piston rod of the spinning cylinder above the base plate. The other end of the rocker arm, which is connected to the piston rod at one end, is used to press and contact the upper surface of the flange strip of the part. This can improve the stability of the pressing and positioning of the part while realizing the quick loading and unloading of the part, avoid the positional displacement of the part during processing, and improve the processing accuracy. Attached Figure Description

[0011] Appendix Figure 1 A schematic diagram of the structure of the parts processed by the support and positioning fixture for the irregular shell of this utility model; Appendix Figure 2 This is a schematic diagram of the structure of the support and positioning fixture for the irregularly shaped shell of this utility model; Appendix Figure 3 For the appendix Figure 2 A magnified view of a specific area; Appendix Figure 4 For the appendix Figure 2 A magnified view of another part of the image.

[0012] In the attached figures above: 100, part; 101, arc-shaped cover plate; 102, side plate; 103, shell cavity; 104, flange strip; 105, rib section; 106, product through hole; 107, hole to be processed; 1, base plate; 2, base plate; 31, contour pad; 32, support pad; 4, support column; 5, mounting through hole; 6, spinning cylinder; 61, main body; 7, mounting block; 71, clearance hole; 8, blanking through hole; 9, pressure head; 10, countersunk hole; 11, rocker arm; 12, piston rod; 13, holding cylinder; 14, rotating arm; 15, connecting rod; 16, connecting seat. Detailed Implementation

[0013] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0014] Example 1: A support and positioning fixture for irregularly shaped shells, used for clamping part 100, includes: a base plate 1 and a base plate 2 spaced above the base plate 1. The part 100 includes an inclined arc-shaped cover plate 101. The front edge of the arc-shaped cover plate 101, which is higher than the rear edge, has a downwardly extending side plate 102, thereby forming a cavity 103 between the side plate 102 and the arc-shaped cover plate 101. A horizontally outwardly extending flange strip 104 is formed at the lower end of the side plate 102. The lower surface of the flange strip 104 is flush with the lower end face at the rear edge of the arc-shaped cover plate 101. A carrier plate 3 mounted on the upper surface of the base plate 2 has a plurality of contour pads 31 that can be correspondingly embedded into the cavity 103 of the part 100 and in contact with the lower surface of the arc-shaped cover plate 101, and a plurality of support pads 32 that are in contact with the lower surface of the flange strip 104 on the part 100. The front part of the arc-shaped cover plate 101, above the contour pad 31, has a processing hole 107. The arc-shaped cover plate 101, on the side of the processing hole 107 near the side plate 102, has at least one product through hole 106, thereby forming a rib portion 105 between the product through hole 106 and the processing hole 107. A pressing cylinder 13 is provided on the upper surface of the substrate 2, directly below each product through hole 106. A rotating arm 14 is installed on the upper end of the piston rod of the pressing cylinder 13. The other end of the rotating arm 14, which is rotatably connected to the piston rod at one end, is used to press and engage with the upper surface of the rib portion 105. A connecting rod 15 is rotatably installed in the middle of the rotating arm 14. The lower end of the rotating arm 14, which is rotatably engaged with the upper end of the rotating arm 14, is rotatably connected to a connecting seat 16. The connecting seat 16 is fixedly installed on the side of the piston rod of the pressing cylinder 13 near the rib portion 105.

[0015] Two holes 107 to be processed and two pressure cylinders 13 are provided; the connecting seat 16 is fixedly installed on the upper end face of the main body of the pressure cylinder 13.

[0016] The aforementioned contour pad 31 has several blanking through holes 8 that match the holes 107 to be processed.

[0017] The aforementioned support pad 32 is connected to the substrate 2 by a number of countersunk holes 10 and countersunk screws provided on the support pad 32; the aforementioned base plate 1 is connected to the substrate 2 by at least 3 support columns 4; the 4 support columns 4 are respectively provided at the four corners of the substrate 2.

[0018] Example 2: A support and positioning fixture for irregularly shaped shells, used for clamping part 100, includes: a base plate 1 and a base plate 2 spaced above the base plate 1. The part 100 includes an inclined arc-shaped cover plate 101. The front edge of the arc-shaped cover plate 101, which is higher than the rear edge, has a downwardly extending side plate 102, thereby forming a cavity 103 between the side plate 102 and the arc-shaped cover plate 101. A horizontally outwardly extending flange strip 104 is formed at the lower end of the side plate 102. The lower surface of the flange strip 104 is flush with the lower end face at the rear edge of the arc-shaped cover plate 101. A carrier plate 3 mounted on the upper surface of the base plate 2 has a plurality of contour pads 31 that can be correspondingly embedded into the cavity 103 of the part 100 and in contact with the lower surface of the arc-shaped cover plate 101, and a plurality of support pads 32 that are in contact with the lower surface of the flange strip 104 on the part 100. The front part of the arc-shaped cover plate 101, above the contour pad 31, has a processing hole 107. The arc-shaped cover plate 101, on the side of the processing hole 107 near the side plate 102, has at least one product through hole 106, thereby forming a rib portion 105 between the product through hole 106 and the processing hole 107. A pressing cylinder 13 is provided on the upper surface of the substrate 2, directly below each product through hole 106. A rotating arm 14 is installed on the upper end of the piston rod of the pressing cylinder 13. The other end of the rotating arm 14, which is rotatably connected to the piston rod at one end, is used to press and engage with the upper surface of the rib portion 105. A connecting rod 15 is rotatably installed in the middle of the rotating arm 14. The lower end of the rotating arm 14, which is rotatably engaged with the upper end of the rotating arm 14, is rotatably connected to a connecting seat 16. The connecting seat 16 is fixedly installed on the side of the piston rod of the pressing cylinder 13 near the rib portion 105.

[0019] At least two mounting through holes 5 are provided on the upper surface of the substrate 2 and on the outside of the support pad 32. Each mounting through hole 5 is provided with a spinning cylinder 6. The main body 61 of the spinning cylinder 6 is mounted on the substrate 2. The upper end of the piston rod 12 of the spinning cylinder 6 is located above the substrate 2 and a rocker arm 11 is mounted thereon. The other end of the rocker arm 11, which is connected to the piston rod 12 at one end, is used to press and contact the upper surface of the flange strip 104 on the part 100. The main body 61 of the spinning cylinder 6 is connected to the substrate 2 by a mounting block 7.

[0020] The other end of the mounting block 7, which is connected to the upper surface of the substrate 2, covers the mounting through hole 5 and has a clearance hole 71 that cooperates with the spinning cylinder 6.

[0021] A pressure head 9 is installed at the end of the rocker arm 11 of the aforementioned spinning cylinder 6 away from the piston rod 12; when in the holding state, the pressure head 9 of the aforementioned spinning cylinder 6, which is in pressing cooperation with the flange strip 104 of the part 100, is located directly above the support pad 32.

[0022] When using it, first place the spinning cylinder in the non-pressing state and the piston rod of the pressing cylinder in the extended state. Then, place the part to be processed onto the base plate accordingly, and make the lower surface of the arc-shaped cover plate of the part correspond to the contour pad on the base plate so that the contour pad provides good support for the arc-shaped cover plate and avoids deformation and other adverse damage to the arc-shaped cover plate during processing. Simultaneously, the lower surface of the part's flange strip is aligned with the support pad on the substrate. Then, the spinning cylinder is switched to the holding state. During this process, the rocker arm drives the pressure head to rotate directly above the flange strip while simultaneously moving downwards to press against the upper surface of the flange strip, thereby achieving the holding and positioning of the part. By switching the state of the spinning cylinder, the part can be quickly loaded and unloaded. This not only prevents the part from shifting due to the force of the pressure head as it approaches or moves away from the part, but also effectively prevents the part from shifting or vibrating due to the force of the cutting tool during processing, thus avoiding tool vibration and affecting processing accuracy. The spinning cylinder is purchased externally and falls within the scope of existing technology, so it will not be elaborated here. At the same time, the holding cylinder is switched to the retracted state. During this process, the end of the rotating arm closest to the part rotates downward to press the part close to the hole to be processed, so as to avoid the part from shifting, moving locally, shaking, or deforming during processing, which could cause the tool to vibrate.

[0023] The support and positioning fixture for the irregular shell of this utility model can not only provide stable support for irregular parts to avoid damage to the parts during processing, but also avoid the local shaking and deformation caused by the offset movement of the parts during processing, thus improving the accuracy and quality of processing. Furthermore, at least two mounting through holes are provided on the upper surface of the substrate and on the outside of the support pad. Each mounting through hole is equipped with a spinning cylinder. The main body of the spinning cylinder is mounted on the substrate. The upper end of the piston rod of the spinning cylinder is located above the substrate and is equipped with a rocker arm. The other end of the rocker arm, which is connected to the piston rod at one end, is used to press and contact the upper surface of the flange strip on the part. This can improve the stability of pressing and positioning the part while realizing the quick loading and unloading of the part, avoid the positional displacement of the part during the processing, and improve the processing accuracy.

[0024] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A support and positioning fixture for an irregularly shaped shell, used for clamping a part (100), comprising: The base plate (1) and the substrate (2) spaced above the base plate (1) are characterized in that: the part (100) includes an inclined arc-shaped cover plate (101), and a downwardly extending side plate (102) is provided at the front edge of the arc-shaped cover plate (101) with the front end higher than the rear end, thereby forming a cavity (103) between the side plate (102) and the arc-shaped cover plate (101), and a horizontally outwardly extending flange strip is formed at the lower end of the side plate (102). 104), the lower surface of this flange strip (104) is flush with the lower end face of the rear edge of the arc-shaped cover plate (101). The upper surface of a carrier plate (3) installed on the upper surface of the substrate (2) is provided with a plurality of contour pads (31) that can be correspondingly embedded in the cavity (103) of the part (100) and in contact with the lower surface of the arc-shaped cover plate (101) and a plurality of support pads (32) for contacting the lower surface of the flange strip (104) on the part (100). The front part of the arc-shaped cover plate (101) and above the contour pad (31) has a hole (107) to be processed. The arc-shaped cover plate (101) and on the side of the hole to be processed (107) near the side plate (102) have at least one product through hole (106), thereby forming a rib (105) between the product through hole (106) and the hole to be processed (107). A pressing cylinder (13) is provided on the upper surface of the base plate (2) and directly below each product through hole (106). A rotating arm (14) is installed on the upper end of the piston rod of the holding cylinder (13). The other end of the rotating arm (14) is rotatably connected to the piston rod and is used to press and cooperate with the upper surface of the rib section (105). A connecting rod (15) is rotatably installed in the middle of the rotating arm (14). The lower end of the rotating arm (14) which is rotatably cooperated with the rotating arm (14) is rotatably connected to a connecting seat (16). The connecting seat (16) is fixedly installed on the side of the piston rod of the holding cylinder (13) near the rib section (105).

2. The support and positioning fixture for the irregularly shaped shell according to claim 1, characterized in that: At least two mounting through holes (5) are provided on the upper surface of the substrate (2) and on the outside of the support pad (32). Each mounting through hole (5) is provided with a spinning cylinder (6). The main body (61) of the spinning cylinder (6) is mounted on the substrate (2). The upper end of the piston rod (12) of the spinning cylinder (6) is located above the substrate (2) and a rocker arm (11) is mounted thereon. One end of the rocker arm (11) is connected to the piston rod (12), and the other end is used to press and contact the upper surface of the flange strip (104) on the part (100).

3. The support and positioning fixture for the irregularly shaped shell according to claim 1 or 2, characterized in that: The connecting seat (16) is fixedly installed on the upper end face of the main body of the pressure cylinder (13).

4. The support and positioning fixture for the irregularly shaped shell according to claim 1 or 2, characterized in that: Two of each are provided for the hole to be processed (107) and the holding cylinder (13).

5. The support and positioning fixture for the irregularly shaped shell according to claim 1 or 2, characterized in that: The contour pad (31) has several blanking through holes (8) that match the hole to be processed (107).

6. The support and positioning fixture for the irregularly shaped shell according to claim 2, characterized in that: The main body (61) of the spinning cylinder (6) is mounted and connected to the base plate (2) via a mounting block (7).

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