A tool for turning casing parts

Abstract

The present invention relates to a machining tool for casing shell parts, comprising a disc-shaped base, a workpiece is assembled on the base, wherein a center positioning adjustment mechanism is arranged at the center of the base, a plurality of linkage positioning mechanisms are arranged at even intervals on the inner wall of the workpiece in the circumferential direction, a plurality of auxiliary support clamping mechanisms are arranged at intervals on the circumferential outer wall of the workpiece, and a rotational positioning block is arranged between two of the auxiliary support clamping mechanisms. The present invention adopts a positioning device that can be flexibly adjusted, and can realize the processing of parts of various specifications with high positioning accuracy through an adjustable center positioning shaft and a coordinated linkage positioning device with even distribution at three locations; the six auxiliary support devices on the outer wall of the part can ensure even distribution of the clamping force, avoid deformation of the part due to the clamping process, and ensure stable product quality.

Description

Technical Field

[0001] The invention relates to the technical field of tooling, in particular to a tooling for turning casing shell parts. Background Art

[0002] This type of casing parts are mostly large thin-walled parts made of high-temperature alloy Inco625. They are widely used to connect and support other key core components under high temperature and high pressure environments. The mouth of the parts has high tolerance accuracy requirements and is used for welding and assembly with the counterpart. It is very important to accurately realize the assembly function of the parts and is a common feature of this series of products.

[0003] For this characteristic, the traditional processing method is mostly to use three-jaws with a large contact area to clamp the parts. Since the parts are large in size (φ500mm) and thin in wall thickness (2mm), they are easily deformed during machining. The center position of the parts needs to be repeatedly corrected before processing. The production efficiency is very low and it is difficult to ensure the stability of product quality. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a highly versatile lathe tooling for producing large thin-walled high-temperature alloy casing shell parts, thereby ensuring product quality and improving parts production efficiency. According to the technical solution provided by the present invention:

[0005] A tool for turning casing shell parts, characterized in that:

[0006] It comprises a disc-shaped base, on which the workpiece is assembled, wherein a center positioning adjustment mechanism is arranged at the center of the base, a plurality of linkage positioning mechanisms are arranged at even intervals on the inner wall of the workpiece in the circumferential direction, a plurality of auxiliary support clamping mechanisms are arranged at intervals on the circumferential outer wall of the workpiece, and a rotational positioning block is arranged between two of the auxiliary support clamping mechanisms.

[0007] Furthermore, the center positioning adjustment mechanism includes a positioning sleeve arranged in the center, a positioning shaft is embedded in the center of the positioning sleeve, a cover is arranged on the top upper surface of the positioning shaft, the positioning sleeve and the cover are connected by a center screw passing through the center, and a bracket is arranged on the outer circle of the screw;

[0008] Furthermore, the cover is provided with a plurality of screw holes evenly spaced apart along the circumferential direction, and cover screws are mounted in the screw holes.

[0009] Furthermore, the linkage positioning mechanism includes a slide seat, a slider is provided at the upper end of the slide seat, a groove is provided at the top end of the slide seat, a horizontal screw is horizontally assembled in the groove, the front end of the horizontal screw is inserted into the pin 33, a spring is provided outside the horizontal screw, the two ends of the spring respectively press against one end face of the groove and the side face of the pin 33, and the rear end of the horizontal screw extends out of the side wall of the slide seat;

[0010] A vertical T-shaped hole is provided in the slider, the T-shaped hole is connected to the groove, a pin is installed in the mounting hole, and the pin is connected to the slider through a fixing screw at the upper end;

[0011] The upper end of the slider is provided with a cover plate, a through hole is opened in the cover plate, a support pin is vertically arranged in the through hole, and a pressure plate is also fixedly mounted on the cover plate;

[0012] The slider of the linkage positioning mechanism and the positioning shaft of the center positioning adjustment mechanism are wedge-shaped matched to achieve linkage;

[0013] Furthermore, the auxiliary support clamping mechanism comprises a bottom plate, which is horizontally fixed on the disc base, and a support block and a seat body are vertically arranged on the upper surface of the bottom plate, wherein a pressure plate is embedded in the center of the support block, a cylindrical screw is arranged through the center of the pressure plate, a compression spring is sleeved on the periphery of the lower end of the cylindrical screw, and the upper and lower ends of the compression spring respectively press against the bottom of the pressure plate and the end surface of the card slot corresponding to the support block;

[0014] An auxiliary support shaft is embedded in the seat body, a groove is provided in the auxiliary support shaft, and a wedge is provided in the groove; the bottom of the auxiliary support shaft is connected to the corresponding groove in the bottom plate through a spring;

[0015] A limiting block is vertically arranged on one side of the seat body, a limiting rod is horizontally arranged at the center of the limiting block 1, and screw holes are symmetrically opened on the upper and lower sides of the limiting rod.

[0016] Furthermore, the rotational positioning block is a bracket structure, on which a contoured groove matching the workpiece is provided.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. Traditional processing tools can only process parts of a fixed specification, with poor versatility; and they are easily deformed during clamping, and the center of the parts needs to be repeatedly corrected, resulting in low production efficiency and unstable product quality. The present invention uses a positioning device that can be flexibly adjusted according to the product structure and size requirements. Through the adjustable center positioning axis and the coordinated linkage positioning device with three evenly distributed parts, it can realize the processing of parts of various specifications with high positioning accuracy; the six auxiliary support devices on the outer wall of the part can ensure the uniform distribution of the clamping force, avoid deformation of the parts due to the clamping process, and ensure stable product quality.

[0019] 2. The present invention is simple in design and easy to operate. Compared with the traditional tooling, the production efficiency is 40% higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is the front view of the present invention.

[0022] Figure 3 for Figure 1 Top view of the .

[0023] Figure 4 It is a three-dimensional diagram of the wedge block of the present invention.

[0024] Figure 5 It is a longitudinal sectional view of the wedge of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0026] like Figure 1~Figure 5 As shown, a tool for turning casing shell parts includes a disc-shaped base 10, on which a workpiece 60 is assembled, wherein a center positioning adjustment mechanism 20 is arranged at the center of the base, a plurality of linkage positioning mechanisms 30 are arranged at even intervals on the inner wall of the workpiece in the circumferential direction, a plurality of auxiliary support clamping mechanisms 40 are arranged at intervals on the circumferential outer wall of the workpiece, and a rotational positioning block 50 is arranged between two of the auxiliary support clamping mechanisms.

[0027] The center positioning adjustment mechanism 20 includes a center-arranged positioning sleeve 21, a positioning shaft 25 is embedded in the center of the positioning sleeve 21, a cover 26 is provided on the top surface of the positioning shaft 25, the positioning sleeve and the cover are connected by a center screw 28 passing through the center, and a bracket 27 is provided on the outer circle of the screw;

[0028] The cover 26 is provided with a plurality of screw holes evenly spaced apart along the circumferential direction, and cover screws 26.1 are mounted in the screw holes.

[0029] In this embodiment, there are three linkage positioning mechanisms 30, which include a slide seat 31, a slider 32 is arranged at the upper end of the slide seat, a groove 31.1 is opened at the top of the slide seat, a horizontal screw 35 is horizontally assembled in the groove 31.1, the front end of the horizontal screw 35 is inserted into the pin 33, a spring 36 is arranged on the outer sleeve of the horizontal screw 35, the two ends of the spring 36 respectively press against one end face of the groove and the side face of the pin 33, and the rear end of the horizontal screw 35 extends out of the side wall of the slide seat;

[0030] A vertical T-shaped hole 32.1 is provided in the slider 32, and the T-shaped hole is connected to the groove 31.1, wherein a pin 33 is installed in the mounting hole, and the pin 33 is connected to the slider by a fixing screw 38 at the upper end;

[0031] The upper end of the slider is provided with a cover plate 37, a through hole is provided in the cover plate, a support pin 39 is vertically provided in the through hole, and a pressing plate 34 is also fixedly mounted on the cover plate;

[0032] The slider 32 of the linkage positioning mechanism 30 and the positioning shaft 26 of the center positioning adjustment mechanism 20 are wedge-fitted to achieve linkage;

[0033] In this example, there are six auxiliary support clamping mechanisms 40, which include a bottom plate 41, which is horizontally fixed on the disc base, and a support block 42 and a seat body 45 are vertically arranged on the upper surface of the bottom plate, wherein a pressure plate 43 is embedded in the center of the support block 42, and a cylindrical screw 44 is arranged through the center of the pressure plate, and a compression spring 49 is sleeved on the periphery of the lower end of the cylindrical screw, and the upper and lower ends of the compression spring respectively press against the bottom of the pressure plate 43 and the corresponding end faces of the card slot of the support block 42;

[0034] An auxiliary support shaft 46 is embedded in the seat body 45, a groove is provided in the auxiliary support shaft 46, and a wedge block 47 is provided in the groove;

[0035] The wedge block 47 includes an inclined wedge head 47.1 and a cylindrical lower portion 47.2. A countersunk hole 47.3 is provided inside the cylindrical lower portion 47.2. The bottom of the auxiliary support shaft 46 is connected to the corresponding slot in the bottom plate 41 through a spring 48.

[0036] A limit block 45.1 is vertically arranged on one side of the seat body 45, a limit rod 45.2 is horizontally arranged at the center of the limit block 45.1, and screw holes 45.3 are symmetrically opened at the upper and lower parts of the limit rod.

[0037] The rotational positioning block 50 is a bracket structure, on which a contoured groove 51 matching the workpiece is formed.

[0038] like Figure 2 As shown, the disc is used to support the relevant positioning and clamping mechanism. The part is placed on the linkage centering / positioning mechanism, and the center positioning adjustment mechanism is adjusted to ensure the precise positioning of the part. The rotation direction of the part is then fixed with a rotation positioning block. Finally, the part is clamped with a clamping mechanism with auxiliary support. After calibrating the center position of the tooling on the lathe, the end surface of the part is machined and bored.

[0039] The three support points in the positioning / centering mechanism are used to determine a plane; the three linkage supports are used to determine the center of the workpiece; the rotation positioning block determines a rotation direction. The positioning of the parts is achieved according to the above scheme. Finally, the parts are clamped with the six auxiliary support clamping mechanisms.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tool for turning casing parts, characterized in that: The invention comprises a disc-shaped base (10), on which a workpiece is mounted, wherein a center positioning adjustment mechanism (20) is arranged at the center of the base, a plurality of linkage positioning mechanisms (30) are arranged at even intervals on the inner wall of the workpiece in the circumferential direction, a plurality of auxiliary support clamping mechanisms (40) are arranged at intervals on the outer wall of the workpiece, and a rotational positioning block (50) is arranged between two of the auxiliary support clamping mechanisms; the linkage positioning mechanism (30) comprises a slide seat (31), a slider (32) is arranged at the upper end of the slide seat, a groove (31.1) is provided at the top end of the slide seat, a horizontal screw rod (35) is horizontally mounted in the groove (31.1), the front end of the horizontal screw rod (35) is inserted into the pin (33), a spring (36) is arranged on the outer sleeve of the horizontal screw rod (35), the two ends of the spring (36) respectively abut against one end face of the groove and the side face of the pin (33), and the rear end of the horizontal screw rod (35) extends out of the side wall of the slide seat; a vertical T-shaped hole (32.1) is provided in the slider (32), and the T-shaped hole and the groove (31.1) are connected to each other. .1) connected, wherein a pin (33) is installed in the mounting hole, and the pin (33) is connected to the slide seat through a fixing screw (38) at the upper end; a cover plate (37) is provided at the upper end of the slide block, a through hole is opened in the cover plate, and a supporting pin (39) is vertically arranged in the through hole, and a first pressure plate (34) is also fixedly installed on the cover plate; wherein the slide block (32) of the linkage positioning mechanism (30) and the positioning shaft (25) of the center positioning adjustment mechanism (20) are wedge-fitted to achieve linkage.

2. A tool for turning casing parts as claimed in claim 1, characterized in that: The center positioning adjustment mechanism (20) comprises a center-arranged positioning sleeve (21), a positioning shaft (25) embedded in the center of the positioning sleeve (21), a cover (26) disposed on the top upper surface of the positioning shaft (25), the positioning sleeve and the cover are connected by a center screw (28) passing through the center, and a bracket (27) is disposed on the outer circle of the center screw (28).

3. A tool for turning casing parts as claimed in claim 2, characterized in that: The cover (26) is provided with a plurality of screw holes evenly spaced apart along the circumferential direction, and cover screws (26.1) are mounted in the screw holes.

4. A tool for turning casing parts as claimed in claim 1, characterized in that: The auxiliary support clamping mechanism (40) comprises a base plate (41), which is horizontally fixed on the disc base, and a support block (42) and a seat body (45) are vertically arranged on the upper surface of the base plate, wherein a pressure plate (43) is embedded in the center of the support block (42), a cylindrical screw (44) is arranged through the center of the pressure plate, and a compression spring (49) is sleeved on the periphery of the lower end of the cylindrical screw, and the upper and lower ends of the compression spring respectively press against the bottom of the pressure plate (43) and the corresponding end surface of the slot of the support block (42); an auxiliary support shaft (46) is embedded in the seat body (45), a groove is arranged in the auxiliary support shaft (46), and a wedge block (47) is arranged in the groove; the bottom of the auxiliary support shaft (46) is connected to the corresponding slot in the base plate (41) through a second spring (48); a limit block (45.1) is vertically arranged on one side of the seat body (45), and a limit rod (45) is horizontally arranged in the center of the limit block (45.1). .2), screw holes (45.3) are symmetrically provided on the upper and lower parts of the limit rod.

5. The tooling for turning casing parts as claimed in claim 1, characterized in that: The rotational positioning block (50) is a bracket structure on which a contoured groove (51) matching the workpiece is provided.

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