Worm gear case shell turning clamp

Abstract

A worm gear case shell turning clamp comprises a backrest disc (1), a lower supporting plate (2), a positioning side plate (3) and a positioning mandrel (4), the lower supporting plate (2) is installed on the backrest disc (1), the positioning side plate (3) and the positioning mandrel (4) are respectively installed on the lower supporting plate (2), the positioning mandrel (4) is located on one side of the positioning side plate (3), a positioning screw (5) is arranged on the positioning side plate (3), and a threaded hole is formed in the top of the positioning mandrel (4). The clamp has the advantages that the balancing weight is added, eccentric inertia of a part clamped by the clamp during rotation is eliminated, the service life of a machine tool is prolonged, the worm-gear box shell clamping speed is high, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] The utility model relates to the field of turbine box manufacturing, and particularly relates to a lathe fixture for a worm gear box housing. Background Art

[0002] At present, on the turbine box production line, the turbine box housing needs to be processed on a lathe for parts such as flanges and inner holes. Due to the unique shape of the turbine box, there is a lack of special processing fixtures, and the existing clamping tools lack a counterweight device. When clamping and rotating the turbine box housing for processing, eccentric inertia is generated, the processing is unstable, and the machine tool is easily worn. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a lathe fixture for a worm gear box housing aiming at the above deficiencies.

[0004] The utility model includes a backrest disc, a lower support plate, a positioning side plate and a positioning mandrel.

[0005] The lower support plate is installed on the backrest disc, the positioning side plate and the positioning mandrel are respectively installed on the lower support plate, the positioning mandrel is located on one side of the positioning side plate, a positioning screw is arranged on the positioning side plate, a threaded hole is opened at the top of the positioning mandrel, a pressing bolt is arranged in the threaded hole, the worm gear box housing is placed on the positioning mandrel, one side of the worm gear box housing abuts against the positioning screw, and the worm gear box housing is tightly pressed and fixed on the positioning mandrel through the pressing bolt.

[0006] The positioning mandrel is composed of a base and a convex part. The cross section of the convex part is an isosceles trapezoid. A box housing positioning convex is arranged at the bottom of the convex part. The convex part is installed on the top of the base. A cylindrical positioning convex is arranged at the top of the convex part, and the cylindrical positioning convex is inserted into the shaft through hole of the worm gear box housing.

[0007] The pressing bolt is a hexagon flange face bolt.

[0008] A threaded adjustment hole is opened on the positioning side plate, and the positioning screw is screwed into the threaded adjustment hole and abuts against the side wall of the worm gear box housing.

[0009] A counterweight block is arranged on the backrest disc, and the counterweight block is located above the positioning mandrel.

[0010] A group of reinforcing ribs are arranged at the bottom of the lower support plate.

[0011] The backrest disc is detachably installed on the lathe spindle.

[0012] The advantages of the utility model are as follows: By adding a counterweight block, the eccentric inertia generated when the fixture clamps and rotates parts is eliminated, the service life of the machine tool is prolonged, the clamping speed of the turbine box housing is fast, and the labor intensity of workers is reduced. Description of the Drawings

[0013] Figure 1 It is the front view structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic side view structure diagram of the present utility model.

[0015] Figure 3 It is a schematic front view structure diagram of the present utility model for clamping the turbine box housing.

[0016] Figure 4 It is a schematic side view structure diagram of the present utility model for clamping the turbine box housing.

[0017] Figure 5 It is a schematic structure diagram of the turbine box housing of the present utility model. Specific embodiments

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0020] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of the present invention is placed habitually. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, in the description of the present invention, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0022] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] As shown in the attached drawings, the utility model includes a backrest disc 1, a lower support plate 2, a positioning side plate 3, and a positioning mandrel 4.

[0024] The lower support plate 2 is installed on the backrest disc 1. The positioning side plate 3 and the positioning mandrel 4 are respectively installed on the lower support plate 2. The positioning mandrel 4 is located on one side of the positioning side plate 3. A positioning screw 5 is provided on the positioning side plate 3. A threaded hole is opened at the top of the positioning mandrel 4, and a compression bolt 6 is arranged in the threaded hole. The worm gear box housing is placed on the positioning mandrel 4, and one side of the worm gear box housing abuts against the positioning screw 5. The worm gear box housing is pressed and fixed on the positioning mandrel 4 through the compression bolt 6.

[0025] The positioning mandrel 4 is composed of a base 10 and a convex portion 11. The cross-section of the convex portion 11 is an isosceles trapezoid. A housing positioning convex 12 is provided at the bottom of the convex portion 11. The convex portion 11 is installed on the top of the base 10. A cylindrical positioning convex 7 is provided at the top of the convex portion 11, and the cylindrical positioning convex 7 is inserted into the shaft passing hole of the worm gear box housing.

[0026] The compression bolt 6 is a hexagon flange bolt. The hexagon flange bolt is not easy to loosen.

[0027] A threaded adjustment hole is opened on the positioning side plate 3, and the positioning screw 5 is screwed into the threaded adjustment hole and abuts against the side wall of the worm gear box housing.

[0028] A counterweight 8 is provided on the backrest disc 1, and the counterweight 8 is located above the positioning mandrel 4.

[0029] A group of reinforcing ribs 9 are provided at the bottom of the lower support plate 2. This makes the lower support plate 2 more stable.

[0030] The backrest disc 1 is detachably installed on the lathe spindle.

[0031] Embodiment 1: Place the worm gear box housing 100 on the lower platen 2. The worm gear installation area of the worm gear box housing 100 covers the positioning mandrel 4. The cylindrical positioning protrusion 7 is inserted into the worm shaft hole of the worm gear box housing. The inner wall of the worm gear installation area of the worm gear box housing 100 is fitted and positioned with the outer wall of the box housing positioning protrusion 12. The worm gear installation area of the worm gear box housing 100 is placed on the base 10. One side of the worm installation area of the worm gear box housing 100 abuts against the end of the positioning screw 5. Screw in the compression bolt 6 and press and fix the worm gear box housing 100 on the positioning mandrel 4 from above. After the clamping and positioning are completed, the worm gear box housing 100 can be machined by a lathe. After the machining is completed, unscrew the compression bolt 6 to remove the worm gear box housing 100. Eliminate the eccentric inertia of the fixture-clamped parts during rotation through the counterweight 8 to prevent the wear of the machine tool.

Claims

1. A clamping fixture for a worm gear box housing, characterized in that It includes a backrest plate (1), a lower support plate (2), a positioning side plate (3) and a positioning mandrel (4). The lower support plate (2) is installed on the backrest plate (1), the positioning side plate (3) and the positioning mandrel (4) are respectively installed on the lower support plate (2), the positioning mandrel (4) is located on one side of the positioning side plate (3), a positioning screw (5) is provided on the positioning side plate (3), a threaded hole is opened at the top of the positioning mandrel (4), and a pressing bolt (6) is arranged in the threaded hole. The worm gear box housing is placed on the positioning mandrel (4), one side of the worm gear box housing leans against the positioning screw (5), and the worm gear box housing is pressed and fixed on the positioning mandrel (4) by the pressing bolt (6).

2. The worm gear box housing turning fixture according to claim 1, characterized in that, The positioning mandrel (4) is composed of a base (10) and a convex part (11). The cross-section of the convex part (11) is an isosceles trapezoid. A housing positioning convex (12) is provided at the bottom of the convex part (11). The convex part (11) is installed on the top of the base (10), and a cylindrical positioning convex (7) is provided at the top of the convex part (11). The cylindrical positioning convex (7) is inserted into the shaft through hole of the worm gear box housing.

3. A worm gear housing turning fixture according to claim 1, characterized in that, The pressing bolt (6) is a hexagon flange bolt.

4. A worm gear box housing turning fixture according to claim 1, characterized in that, A threaded adjustment hole is opened on the positioning side plate (3), and the positioning screw (5) is screwed into the threaded adjustment hole and abuts against the side wall of the worm gear box housing.

5. A worm gear box housing turning fixture according to claim 1, wherein, A counterweight block (8) is provided on the backrest plate (1), and the counterweight block (8) is located above the positioning mandrel (4).

6. A worm gear box housing turning fixture according to claim 1, characterized in that, A group of reinforcing ribs (9) are provided at the bottom of the lower support plate (2).

7. A worm gear housing turning fixture according to claim 1, characterized in that, The backrest plate (1) is detachably installed on the lathe spindle.

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