Turning tool for steam seal ring

Abstract

The utility model relates to a steam seal ring turning tool which comprises a round positioning disc, six sets of supporting blocks are arranged on the side face of the positioning disc, the six sets of supporting blocks are evenly distributed around the circle center of the positioning disc, each supporting block is provided with a locking channel penetrating through the supporting block in the radial direction of the positioning disc, and a first locking screw is arranged in each locking channel. And the axial direction of the first locking screw is consistent with the radial direction of the positioning disc. According to the utility model, the six groups of supporting blocks are arranged on the side wall of the positioning disc, each group of supporting blocks can be used for positioning an arc-shaped body, during turning, the positioning disc can be mounted on a lathe firstly, and as the positioning disc is circular, a three-jaw chuck of the lathe can be directly used for clamping and fixing; and then the six arc-shaped bodies are placed on the side wall of the positioning disc one by one, the arc-shaped bodies are locked through cooperation of the first locking screws and the threaded holes in the outer circumferential faces of the arc-shaped bodies, splicing and positioning of the six arc-shaped bodies are achieved, and then turning machining is conducted on the whole steam sealing ring.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of frock, especially a steam seal circle turning frock. BACKGROUND

[0002] The steam seal circle of steam turbine is annular, but needs to be divided into 6 arc bodies when welding, and the 6 arc bodies need to be spliced into complete annular after welding to ensure the overall machining accuracy. The chuck of lathe is usually three-jaw chuck or four-jaw chuck, and cannot center and clamp the 6 arc bodies simultaneously, therefore, the 6 arc bodies cannot be directly clamped on the chuck of lathe, and must be assisted and positioned by frock. SUMMARY

[0003] The utility model provides a steam seal circle turning frock can clamp and position the 6 arc bodies to facilitate overall turning machining.

[0004] To solve the above problems, the utility model adopts the following technical scheme: a steam seal circle turning frock, including circular positioning disc, the side of positioning disc is provided with 6 groups of support blocks, 6 groups of support blocks are evenly distributed around the center of positioning disc, each support block is provided with locking channel that penetrates support block along the radial direction of positioning disc, first locking screw is arranged in locking channel, the axial direction of first locking screw is consistent with the radial direction of positioning disc.

[0005] Further, the side of the positioning disc is provided with a plurality of radially extending sliding grooves, the bottom of the support block is provided with a sliding block, the sliding block is located in the sliding groove and is in sliding cooperation with the sliding groove, and the sliding block is connected with a locking mechanism.

[0006] Further, the depth of the sliding groove is consistent with the thickness of the positioning disc, the width of the sliding groove is less than the width of the bottom surface of the support block, the locking mechanism comprises a threaded hole arranged at the bottom of the sliding block, and the threaded hole is connected with a second locking screw.

[0007] Further, the locking channel is a rectangular notch extending from the middle part of the support block to the top part.

[0008] Further, the positioning disc is provided with a center through hole.

[0009] Further, an inner support sleeve is arranged in the center through hole, and an outer support sleeve is arranged at the outer edge of the positioning disc, and the axial length of the inner support sleeve and the outer support sleeve is greater than the thickness of the positioning disc.

[0010] The utility model discloses beneficial effect is: the utility model discloses, 6 groups of support blocks are set up to the lateral wall of the positioning disc, and each group of support blocks can position one arc body, and when turning, can install the positioning disc on the lathe first, because the positioning disc is circular, so can directly adopt the chuck of three claws of lathe and carry out clamping and fixing, then place 6 arc bodies to the lateral wall of positioning disc one by one, and cooperate with the threaded hole on the outer circumferential surface of arc body through the first locking screw, lock the arc body, that is, realize the assembly and positioning of 6 arc bodies, and then turn the whole of the steam seal ring. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the side view schematic drawing of the utility model;

[0012] Figure 2 It is Figure 1 A-A section view schematic drawing in the utility model;

[0013] Figure 3 It is Figure 1 B-B section view schematic drawing in the utility model;

[0014] Figure 4 It is the positioning schematic drawing of steam seal ring;

[0015] Fig. 1 - positioning disc; 2 - support block; 3 - locking channel; 4 - first locking screw; 5 - sliding slot; 6 - sliding block; 7 - threaded hole; 8 - second locking screw; 9 - center through hole; 10 - inner support sleeve; 11 - outer support sleeve. DETAILED DESCRIPTION

[0016] The utility model is further explained below in connection with the drawings and examples.

[0017] The utility model discloses steam seal ring turning frock, as shown in Figure 1 、 Figure 2 And Figure 3 , including the positioning disc 1 of circular, the positioning disc 1 adopts metal disc, for example, stainless steel disc, and the thickness is about 70mm. The positioning disc 1 is circular, so can directly be clamped by the chuck of three claws or four claws of lathe. The lateral surface of positioning disc 1 is provided with 6 groups of support blocks 2, and each group of support blocks 2 includes two support blocks 2, and the support block 2 can be cylindrical, and each group of support blocks 2 can position one arc body. 6 groups of support blocks 2 are evenly distributed around the center of positioning disc 1, and each support block 2 is provided with locking channel 3 that penetrates support block 2 along the radial direction of positioning disc 1, and first locking screw 4 is arranged in locking channel, and the axial direction of first locking screw 4 is consistent with the radial direction of positioning disc 1. Because the arc body outer circumferential surface has threaded blind hole itself, therefore, adopt first locking screw 4 and cooperate with the threaded blind hole of arc body outer wall, can realize the connection of arc body and support block 2, and then complete the positioning of arc body.

[0018] In order to facilitate positioning of various different inner and outer diameters of the steam seal ring, a plurality of groups of radially extending sliding grooves 5 are arranged on the side of the positioning disc 1, and the bottom of the supporting block 2 is provided with a sliding block 6 which can be integrally formed with the supporting block 2. The sliding block 6 is located in the sliding groove 5 and is in sliding cooperation with the sliding groove 5, and the sliding block 6 is connected with a locking mechanism. Since the length direction of the sliding groove 5 is consistent with the radial direction of the supporting block 2, when the sliding block 6 slides along the sliding groove 5, the radial distance of the supporting block 2 to the center of the positioning disc 1 can be changed. When the outer diameter of the steam seal ring changes, the radial position of the supporting block 2 can be adjusted according to the outer diameter of the steam seal ring, so that the distance of the supporting block 2 to the center of the positioning disc 1 is equal to the outer diameter of the steam seal ring, and then the sliding block 6 is locked by using the locking mechanism to prevent the position of the sliding block 6 and the supporting block 2 from changing.

[0019] The depth of the sliding groove 5 is consistent with the thickness of the positioning disc 1, and the width of the sliding groove 5 is smaller than the width of the bottom surface of the supporting block 2. The bottom surface of the supporting block 2 is the surface that is in close contact with the side surface of the positioning disc 1. The locking mechanism comprises a threaded hole 7 arranged at the bottom of the sliding block 6, and the threaded hole 7 is connected with a second locking screw 8. The length direction of the second locking screw 8 is consistent with the axial direction of the positioning disc 1. When locking the sliding block 6, the second locking screw 8 is inserted into the sliding groove 5 and aligned with the threaded hole 7, and then the second locking screw 8 is screwed into the threaded hole 7, so that the large end of the second locking screw 8 gradually contacts the side surface of the positioning disc 1 and presses the other side surface, and at the same time the second locking screw 8 tightens the sliding block 6, so that the bottom surface of the supporting block 2 presses the other side surface of the positioning disc 1. At this time, the supporting block 2 and the sliding block 6 can be kept stable. When it is necessary to adjust the position of the supporting block 2, the second locking screw 8 can be loosened, which is very convenient to operate.

[0020] The locking channel 3 can be a circular light hole, and the first locking screw 4 penetrates the light hole and is in gap cooperation with the hole wall of the light hole. As a preferred embodiment, the locking channel 3 is a rectangular notch extending from the middle to the top of the supporting block 2. The first locking screw 4 can move integrally in the rectangular notch, and the moving direction is the axial direction of the positioning disc 1, so that the first locking screw 4 can be more conveniently aligned with the threaded blind hole in the outer wall of the arc-shaped body.

[0021] The positioning disc 1 is provided with a center through hole 9, which can reduce the weight of the positioning disc 1 and is beneficial to reduce the difficulty of installation and disassembly.

[0022] In order to further reduce the weight of the positioning disc 1, the positioning disc 1 can adopt a smaller thickness, but in order to improve the stability of the whole tool, an inner support sleeve 10 is arranged in the center through hole 9, and an outer support sleeve 11 is arranged at the outer circular edge of the positioning disc 1, and the axial length of the inner support sleeve 10 and the outer support sleeve 11 is greater than the thickness of the positioning disc 1. The inner support sleeve 10 and the outer support sleeve 11 are cylindrical, the thickness of the positioning disc 1 can be 70mm, the axial length of the inner support sleeve 10 and the outer support sleeve 11 can be 90mm, the outer support sleeve 11 has a greater length, and when clamping, the three-jaw chuck of the lathe clamps the outer support sleeve 11, and the outer support sleeve 11 has sufficient contact area with the three-jaw chuck, so that the stability of clamping can be ensured.

[0023] The specific use process of the utility model is: 6 arc-shaped bodies can be fixed to the supporting block 2 first, and then the positioning disc 1 is installed on the chuck of the lathe, or the positioning disc 1 can be installed on the chuck of the lathe first, and then the 6 arc-shaped bodies are fixed to the supporting block 2. When multiple steam seal rings need to be turned, the first set of steam seal rings is fixed to the supporting block 2, and then the positioning disc 1 is installed on the chuck of the lathe, after processing, the processed steam seal ring is removed, the supporting block 2 is retained on the lathe, and the second set of steam seal rings is fixed to the supporting block 2. When fixing the steam seal ring, the 6 arc-shaped bodies are moved to the side of the supporting block 2 facing the center of the positioning disc 1 one by one, the outer circumferential surface of the arc-shaped body contacts the side wall of the supporting block 2, the threaded blind hole of the arc-shaped body outer side wall is aligned with the first locking screw 4, the first locking screw 4 is rotated, so that the first locking screw 4 cooperates with the threaded blind hole, until the first locking screw 4 is tightened, and the outer circumferential surface of the arc-shaped body is tightly attached to the positioning surface of the supporting block 2, as shown in Figure 4

[0024] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.​

Claims

1. A gasket turning tool, characterized by: The application relates to a positioning disc (1) comprising a circular positioning disc (1), the side of the positioning disc (1) is provided with six groups of supporting blocks (2), the six groups of supporting blocks (2) are uniformly distributed around the center of the positioning disc (1), a locking channel (3) is arranged on each supporting block (2) and penetrates the supporting block (2) along the radial direction of the positioning disc (1), a first locking screw (4) is arranged in the locking channel (3), and the axial direction of the first locking screw (4) is consistent with the radial direction of the positioning disc (1). The locking channel (3) is a rectangular notch extending from the middle part of the supporting block (2) to the top part; The positioning disc (1) is provided with a center through hole (9), an inner supporting sleeve (10) is arranged in the center through hole (9), the outer edge of the positioning disc (1) is provided with an outer supporting sleeve (11), and the axial length of the inner supporting sleeve (10) and the outer supporting sleeve (11) is greater than the thickness of the positioning disc (1).

2. The gland ring turning fixture of claim 1, wherein: The side of the positioning disc (1) is provided with a plurality of radially extending sliding grooves (5), the bottom of the supporting block (2) is provided with a sliding block (6), the sliding block (6) is located in the sliding groove (5) and is in sliding fit with the sliding groove (5), and the sliding block (6) is connected with a locking mechanism.

3. The gland ring turning fixture of claim 2, wherein: The depth of the sliding groove (5) is consistent with the thickness of the positioning disc (1), the width of the sliding groove (5) is smaller than the width of the bottom surface of the supporting block (2), the locking mechanism comprises a threaded hole (7) arranged at the bottom of the sliding block (6), and the threaded hole (7) is connected with a second locking screw (8).

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