Shielding cylinder extrusion forming tool

Abstract

The utility model relates to the technical field of shielding cylinder machining, in particular to a shielding cylinder extrusion forming tool which comprises a forming cutter body assembly and a forming outer sleeve assembly, the forming cutter body assembly comprises an extrusion cutter body, a Morse taper shank is installed on the left side of the extrusion cutter body, and a fixing plug pin is installed on the left side of the surface of the extrusion cutter body in a penetrating mode. A rotating shaft pin is fixedly mounted on the left side of the surface of the extrusion cutter body, an extrusion wrench movably sleeves the surface of the rotating shaft pin, an extrusion fork frame sleeves the center of the surface of the extrusion wrench and located in an inner cavity of the extrusion cutter body, and an extrusion pressing rod is slidably mounted in the center of the right side of the extrusion fork frame. The forming cutter body assembly and the forming outer sleeve assembly are used in a matched mode, the shielding cylinder forming device has the advantage of extrusion machining, the shielding cylinder can be contained through the outer sleeve, the bearing is expanded outwards through displacement of the extrusion cutter body, the shielding cylinder is well extruded and machined under driving of an external machine tool spindle, and the machining roundness and the machining precision of the shielding cylinder are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of shielding tube processing, in particular to a shielding tube extrusion molding tool. Background Art

[0002] Vacuum pump shielded motor, the shielding cylinder is an important component placed between the stator and rotor of the shielded motor. The use of suitable shielding cylinder components plays a vital role in reducing the electric vortex of the shielded motor, reducing energy consumption and temperature rise, and improving efficiency. The shielding cylinder exists in the air gap between the stator and rotor of the shielded motor, so there are too high requirements on the roundness and the dimensional accuracy of the inner and outer diameters of the shielding cylinder. If the size is too small or the roundness is not good, it is easy to scratch the rotor and cause quality accidents; if the size is too large, it will make it difficult to assemble the shielding cylinder under the stator. Therefore, it is particularly important to control the roundness and size in the processing of the shielding cylinder.

[0003] Due to the location and function of the shielding tube, its size, roundness and leakage rate requirements are relatively high. In the past, the shielding tube processing technology was difficult and the yield rate was low, which was mainly affected by many factors, as follows:

[0004] 1. The plate thickness deviation requirement is too high: the plate is selected to be 0.5mm, because the thickness deviation directly affects the inner and outer diameters of the cylinder after rolling;

[0005] 2. The precision requirement of plate cutting is too high: there is a precision deviation in the length of plate cutting, and the deviation in the round welding process also directly affects the inner and outer diameters of the shielding tube;

[0006] 3. After the rounding welding, there is welding deformation, and there is still uncertainty in stress deformation after shaping, which directly affects the roundness and diameter accuracy of the product;

[0007] On the whole, according to the existing conditions, there are problems with the material thickness requirements, cutting size requirements and welding processing requirements being too high. In order to solve the above technical problems, we have designed a shielding tube extrusion molding tool. Utility Model Content

[0008] The utility model aims to provide a shielding tube extrusion molding tool, which has the advantages of extrusion processing and solves the problems of excessively high requirements on material thickness, blanking size and welding processing during the processing of the shielding tube.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shielding tube extrusion molding tool, comprising a molding knife body assembly and a molding sleeve assembly, the molding knife body assembly comprises an extrusion knife body, a Morse taper handle is installed on the left side of the extrusion knife body, a fixed pin is installed through the left side of the surface of the extrusion knife body, a rotating shaft pin is fixedly installed on the left side of the surface of the extrusion knife body, an extrusion wrench is provided on the movable sleeve of the surface of the rotating shaft pin, an extrusion fork frame is provided at the center of the surface of the extrusion wrench and located in the inner cavity sleeve of the extrusion knife body, an extrusion pressure rod is slidably installed at the center of the right side of the extrusion fork frame, a compression spring is provided on the surface of the extrusion pressure rod, an extrusion pressure head is fixedly connected to the right side of the extrusion pressure rod, and an extrusion knife head assembly is installed on the right end of the extrusion knife body;

[0010] The molding outer sleeve assembly comprises an outer sleeve, and a flange base is fixedly sleeved on the surface of the outer sleeve.

[0011] Preferably, a set screw is threadedly connected to the left side of the extrusion cutter body, and the rear end of the set screw passes through the extrusion cutter body and extends to the inside of the Morse taper shank.

[0012] Preferably, the surfaces of the extrusion cutter body and the extrusion wrench are provided with pin holes for use with the fixing pins, and the number of the pin holes on the extrusion cutter body is three.

[0013] Preferably, a movable groove for use with an extrusion wrench is formed through the surface of the extrusion cutter body, and a pin is embedded and installed at the connection between the extrusion wrench and the extrusion fork frame.

[0014] Preferably, the two ends of the compression spring are fixedly connected to the extrusion fork frame and the extrusion pressure rod respectively, and the extrusion pressure head is a pressure head with three cone surfaces.

[0015] Preferably, the extrusion tool head assembly includes an extrusion base, the surface of the extrusion base is fixedly connected to the connection point of the extrusion tool body, an extrusion bracket is slidably installed inside the extrusion base, an extrusion shaft is installed through the surface of the extrusion bracket, and a bearing is provided on the surface of the extrusion shaft and in the inner cavity of the extrusion bracket.

[0016] Preferably, an extrusion cover is fixedly mounted on a side of the extrusion base away from the extrusion blade body, and the number of the extrusion brackets is three and they are adapted to the extrusion ram.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] The utility model has the advantages of extrusion processing by using a forming cutter body component and a forming outer sleeve component in combination. The shielding tube can be received by the outer sleeve, and when the extrusion wrench is driven to rotate, the extrusion cutter body can be displaced to cause the bearing to expand outward. Under the drive of the external machine tool spindle, the shielding tube can be well extruded to ensure the processing roundness and processing accuracy of the shielding tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a three-dimensional schematic diagram of the utility model forming cutter body assembly;

[0021] Figure 3 It is a three-dimensional schematic diagram of the utility model molded jacket assembly;

[0022] Figure 4 It is a three-dimensional schematic diagram of the local structure of the utility model forming cutter body assembly;

[0023] Figure 5 It is a three-dimensional schematic diagram of the installation of the extrusion rod, compression spring and extrusion head of the utility model;

[0024] Figure 6 It is a right-side stereoscopic view of the utility model extrusion cutter head assembly;

[0025] Figure 7 It is a three-dimensional schematic diagram of the local structure of the utility model extrusion cutter head assembly.

[0026] In the figure: 1. forming tool body assembly; 101. Morse taper handle; 102. extrusion tool body; 103. shaft pin; 104. extrusion tool head assembly; 1041. extrusion cover; 1042. bearing; 1043. extrusion base; 1044. extrusion bracket; 1045. extrusion shaft; 105. fixing pin; 106. extrusion wrench; 107. set screw; 108. pin; 109. extrusion fork frame; 110. extrusion pressure rod; 111. compression spring; 112. extrusion pressure head; 2. forming sleeve assembly; 201. outer sleeve; 202. flange base. DETAILED DESCRIPTION

[0027] See also Figure 1-Figure 7A shielding tube extrusion molding tool comprises a molding tool body assembly 1 and a molding jacket assembly 2, wherein the molding tool body assembly 1 comprises an extrusion tool body 102, a Morse taper handle 101 is installed on the left side of the extrusion tool body 102, a fixed pin 105 is installed through the left side of the surface of the extrusion tool body 102, a rotating shaft pin 103 is fixedly installed on the left side of the surface of the extrusion tool body 102, an extrusion wrench 106 is movably sleeved on the surface of the rotating shaft pin 103, an extrusion fork frame 109 is sleeved at the center of the surface of the extrusion wrench 106 and located in the inner cavity of the extrusion tool body 102, an extrusion pressure rod 110 is slidably installed at the center of the right side of the extrusion fork frame 109, a compression spring 111 is sleeved on the surface of the extrusion pressure rod 110, an extrusion pressure head 112 is fixedly connected to the right side of the extrusion pressure rod 110, and an extrusion tool head assembly 104 is installed at the right end of the extrusion tool body 102;

[0028] The molded outer sleeve assembly 2 includes an outer sleeve 201, and a flange base 202 is fixedly sleeved on the surface of the outer sleeve 201;

[0029] See also Figure 2 The left side of the extrusion cutter body 102 is threadedly connected with a set screw 107, and the rear end of the set screw 107 penetrates the extrusion cutter body 102 and extends to the inside of the Morse taper shank 101;

[0030] See also Figure 2 and Figure 4 The surfaces of the extrusion cutter body 102 and the extrusion wrench 106 are provided with pin holes for use with the fixing pin 105, and the number of the pin holes located on the extrusion cutter body 102 is three;

[0031] See also Figure 2 and Figure 4 The surface of the extrusion cutter body 102 is provided with a movable groove for use with an extrusion wrench 106, and a pin 108 is embedded and installed at the connection between the extrusion wrench 106 and the extrusion fork frame 109;

[0032] See also Figure 5 The two ends of the compression spring 111 are fixedly connected to the extrusion fork frame 109 and the extrusion rod 110 respectively, and the extrusion head 112 is a head with three cone surfaces;

[0033] See also Figure 1 , Figure 4 , Figure 6 and Figure 7 The extrusion cutter head assembly 104 includes an extrusion base 1043, the surface of the extrusion base 1043 is fixedly connected to the connection of the extrusion cutter body 102, an extrusion bracket 1044 is slidably installed inside the extrusion base 1043, an extrusion shaft 1045 is installed through the surface of the extrusion bracket 1044, and a bearing 1042 is movably sleeved on the surface of the extrusion shaft 1045 and located in the inner cavity of the extrusion bracket 1044;

[0034] See also Figure 1 , Figure 4 , Figure 6 and Figure 7 An extrusion cover 1041 is fixedly mounted on one side of the extrusion base 1043 away from the extrusion blade body 102 , and there are three extrusion brackets 1044 which are adapted to the extrusion ram 112 .

[0035] When in use, the tooling is pre-installed: the forming tool body assembly 1 is fixed to the equipment end, such as the tailstock of a general lathe or the vertical drilling spindle, by the Morse taper shank 101. According to the shielding tube gauge to be processed, the outer sleeve 201 with a suitable inner diameter is selected, and the flange base 202 is fixed to the general lathe spindle end or the vertical drilling platform end with bolts; workpiece positioning: the workpiece is loaded into the outer sleeve 201, and then the extrusion tool head assembly 104 and part of the extrusion tool body 102 are moved into the outer sleeve 201 with the workpiece in cooperation with the machine tool guide rail. After it is in place, the extrusion wrench 106 is pulled, and under the positioning action of the rotating shaft pin 103, the extrusion wrench 106 is rotated and tilted to push the extrusion fork frame 109, the extrusion pressure rod 110 and the extrusion The pressing head 112 is displaced and the compression spring 111 is compressed until the extrusion head 112 enters the extrusion bracket 1044. Since the extrusion head 112 is a three-conical surface design, the three bearings 1042 can simultaneously perform three-sided radial movement. After the workpiece is extruded to a suitable gear position, the pin hole on the extrusion wrench 106 is aligned with the pin hole on the extrusion tool body 102. At this time, the fixing pin 105 is inserted to lock it to ensure the installation stability of the extrusion wrench 106; workpiece processing: start the machine tool spindle to rotate, and extrude the inner wall of the workpiece from the inside to the outside through the three groups of bearings 1042 of the extrusion tool head assembly 104. The roundness and dimensional accuracy of the workpiece can be guaranteed through the extrusion process.

[0036] In summary, the shielding tube extrusion molding tool, by providing a molding cutter body assembly 1 and a molding jacket assembly 2, solves the problem of excessively high requirements on material thickness, blanking size and welding processing during the processing of the shielding tube.

Claims

1. A shielding tube extrusion molding tool, comprising a molding cutter body assembly (1) and a molding jacket assembly (2), characterized in that: The molding knife body assembly (1) comprises an extrusion knife body (102), a Morse taper handle (101) is installed on the left side of the extrusion knife body (102), a fixing pin (105) is installed through the left side of the surface of the extrusion knife body (102), a rotating shaft pin (103) is fixedly installed on the left side of the surface of the extrusion knife body (102), an extrusion wrench (106) is movably sleeved on the surface of the rotating shaft pin (103), an extrusion fork frame (109) is sleeved at the center of the surface of the extrusion wrench (106) and located in the inner cavity of the extrusion knife body (102), an extrusion pressure rod (110) is slidably installed at the center of the right side of the extrusion fork frame (109), a compression spring (111) is sleeved on the surface of the extrusion pressure rod (110), an extrusion pressure head (112) is fixedly connected to the right side of the extrusion pressure rod (110), and an extrusion knife head assembly (104) is installed at the right end of the extrusion knife body (102); The molding sleeve assembly (2) comprises an outer sleeve (201), and a flange base (202) is fixedly sleeved on the surface of the outer sleeve (201).

2. The shielding tube extrusion molding tool according to claim 1, characterized in that: The left side of the extrusion cutter body (102) is threadedly connected with a set screw (107), and the rear end of the set screw (107) passes through the extrusion cutter body (102) and extends to the inside of the Morse taper shank (101).

3. The shielding tube extrusion molding tool according to claim 1, characterized in that: The surfaces of the extrusion cutter body (102) and the extrusion wrench (106) are both provided with pin holes for use with the fixing pin (105), and the number of the pin holes located on the extrusion cutter body (102) is three.

4. The shielding tube extrusion molding tool according to claim 1, characterized in that: A movable groove for use with an extrusion wrench (106) is formed through the surface of the extrusion blade body (102), and a pin (108) is embedded and installed at the connection between the extrusion wrench (106) and the extrusion fork frame (109).

5. The shielding tube extrusion molding tool according to claim 1, characterized in that: The two ends of the compression spring (111) are respectively fixedly connected to the extrusion fork frame (109) and the extrusion rod (110), and the extrusion head (112) is a head with three cone surfaces.

6. The shielding tube extrusion molding tool according to claim 1, characterized in that: The extrusion tool head assembly (104) comprises an extrusion base (1043), the surface of the extrusion base (1043) is fixedly connected to the connection point of the extrusion tool body (102), an extrusion bracket (1044) is slidably installed inside the extrusion base (1043), an extrusion shaft (1045) is installed through the surface of the extrusion bracket (1044), and a bearing (1042) is provided on the surface of the extrusion shaft (1045) and is located in the inner cavity of the extrusion bracket (1044).

7. The shielding tube extrusion molding tool according to claim 6, characterized in that: An extrusion cover (1041) is fixedly mounted on a side of the extrusion base (1043) away from the extrusion blade body (102), and the number of the extrusion brackets (1044) is three and is compatible with the extrusion ram (112).

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