Rapid polishing and shaping device for end face of wax mould

Abstract

The utility model provides a rapid polishing and shaping device for the end face of a wax mold, and belongs to the technical field of turbine blade casting. Comprising a clamping part formed by hinging two clamping petals, the clamping part comprises an elastic piece used for driving the two clamping petals to rotate and be combined mutually, grooves are formed in the bottoms of the two clamping petals, and a mounting groove matched with a lower connector of the crystal selector is formed by combining the grooves of the two clamping petals. A limiting plate is arranged on the outer side of the groove below each clamping flap in a lifting adjusting manner, and an adjusting piece for adjusting the height of the limiting plate is arranged on each clamping flap. When the end face of the crystal selector is polished, the crystal selector is clamped in the mounting groove between the two clamping petals, the crystal selector can be movably polished on the heating flat plate, when the limiting plate is in contact with the heating flat plate, the crystal selector is polished in place, the end face of the polished crystal selector is flat and horizontal, frequent inspection of operators is not needed, and the working efficiency is greatly improved. The effect of improving the grinding efficiency of the crystal selector is achieved.

Description

Technical Field

[0001] This utility model relates to the field of turbine blade casting technology, and in particular to a device for rapid grinding and shaping of the end face of a wax mold. Background Technology

[0002] Working blades are crucial components of aero engines and gas turbines. They are typically formed using investment casting. The most critical process in investment casting is the fabrication of the wax pattern assembly. After the working blade wax patterns are pressed, they need to be assembled. Due to differences in the type of working blade and the assembly method, a "birdcage" assembly method exists. This method involves connecting and fixing the pouring cup and base plate via a central injection pipe, then fixing each working blade wax pattern onto the pouring cup. The bottom of the working blade wax pattern is connected to the base plate via a crystal selector, thus casting and machining a single-crystal blade.

[0003] The crystal selector includes an upper connector connected to the working blade, a lower connector connected to the base plate, and a spiral section between the upper and lower connectors. When assembling the crystal selector with the blade wax mold and the base plate, in order to ensure that the crystal selector can remain vertically connected to the base plate and that the height of the crystal selector is adapted to the gap between the blade wax mold and the base plate, it is usually necessary for the operator to hold the crystal selector on a heated plate to polish it so that the surface of the crystal selector is flat.

[0004] However, when operators hold the crystal selector for polishing, it is difficult to ensure that the crystal selector itself is in a vertical position, and the amount of polishing on the bottom surface of the crystal selector is difficult to control. Operators need to have a high level of operating experience to polish in small amounts and multiple times, resulting in low polishing efficiency. Utility Model Content

[0005] In view of the above problems, this utility model provides a device for rapid grinding and shaping of the end face of a wax mold.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0007] A device for rapid grinding and shaping of the end face of a wax model is provided, including a clamping part formed by two clamping segments hinged together. The clamping part includes an elastic element for driving the two clamping segments to rotate and merge. The bottom of each clamping segment is provided with a groove. The grooves of the two clamping segments merge to form a mounting groove that is adapted to the lower connector of the crystal selector. A limit plate is provided on the outside of the groove below each clamping segment for adjustable height. An adjusting element is provided on the clamping segment for adjusting the height of the limit plate.

[0008] Furthermore, clamping plates are fixedly installed on the outer walls of both clamping segments near the hinge axis.

[0009] Further, the adjusting member comprises an adjusting screw and a guide rod, the top of the limiting plate is vertically connected with the guide rod, the limiting plate is slidably connected to the clamping piece through the guide rod, the adjusting screw passes through the clamping piece and is threadedly connected with the clamping piece, and one end of the adjusting screw is rotationally connected with the limiting plate.

[0010] Further, the guide rod passes through the clamping piece, and a scale line is arranged on the outer wall of the guide rod along the length direction of the guide rod.

[0011] Further, a plurality of rolling balls are movably arranged on the bottom wall of the limiting plate.

[0012] Further, the clamping piece is made of transparent material, the limiting plate is provided with an observation opening exposing the top of the rolling ball, and an identification pattern is arranged on the outer wall of the rolling ball.

[0013] The beneficial effects of the utility model are as follows: when the end face of the crystal selector is polished, the limiting plate at the bottom of the clamping piece is moved to a suitable position by rotating the adjusting screw in the polishing and shaping device, the two clamping plates are clamped, the two clamping pieces are relatively rotated to open, the lower connecting head of the crystal selector is aligned and clamped in the mounting groove on the clamping piece, the clamping plate is loosened, the two clamping pieces clamp and fix the crystal selector, the operator holds the holding part, the crystal selector can be moved and polished on the heating flat plate, when the limiting plate contacts the heating flat plate, the polished crystal selector end face is flat and horizontal, the operator does not need to frequently check, and the polishing efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the polishing and shaping device clamping the crystal selector in the closed state of the embodiment of the application.

[0015] Figure 2 It is a structure schematic view of the clamping piece in the open state of the embodiment of the application.

[0016] Wherein, 1, clamping piece; 11, clamping plate; 12, holding part; 13, rubber pad; 2, elastic member; 3, limiting plate; 31, rolling ball; 41, adjusting screw; 42, guide rod; 43, scale line; 51, lower connecting head; 52, spiral part; 53, upper connecting head. DETAILED DESCRIPTION

[0017] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings of the specification and specific embodiments.

[0018] The embodiment of the application discloses a wax mold end face rapid polishing and shaping device, referring to Figure 1 and Figure 2, including two clamping pieces 1, the two clamping pieces 1 are hinged to each other, and the two clamping pieces 1 are combined by rotating to each other to form a clamping part capable of clamping the lower connector 51 of the crystal selector. The bottom of each of the two clamping pieces 1 is provided with a groove, and the two grooves jointly form a mounting groove after the two clamping pieces 1 are combined, which can accommodate the lower connector 51 of the crystal selector. The clamping part further comprises an elastic member 2 for driving the two clamping pieces 1 to rotate and combine with each other, and the two clamping pieces 1 are kept clamping the crystal selector by the elastic member 2. A limiting plate 3 is installed below the two clamping pieces 1 outside the groove and is adjusted in height by an adjusting member provided on the clamping piece 1.

[0019] When polishing the end face of the wax mold, the two clamping pieces 1 are opened, the crystal selector is clamped in the mounting groove, and the distance between the bottom wall of the limiting plate 3 and the bottom wall of the mounting groove is adjusted to the standard length of the lower connector 51 of the crystal selector. The crystal selector can be polished on the heating flat plate by holding the clamping part, and the crystal selector is polished to the position when the limiting plate 3 contacts the heating flat plate, and then the crystal selector is removed. The end face of the crystal selector is polished flat, and the length of the lower connector 51 of the crystal selector is appropriate.

[0020] Specifically, the elastic member 2 can be a torsion spring, and a clamping plate 11 is integrally fixed and connected on the outer wall of each of the two clamping pieces 1 near the hinge shaft. When the two clamping pieces 1 are opened, the operator can open the movable end of the two clamping pieces 1 by simultaneously clamping the two clamping plates 11 close to each other.

[0021] The adjusting member comprises an adjusting screw 41 and a guide rod 42, and the top of the limiting plate 3 is vertically connected with the guide rod 42, the guide rod 42 is slidably arranged in the clamping piece 1, and the limiting plate 3 is slidably connected to the clamping piece 1 through the guide rod 42. The adjusting screw 41 passes through the clamping piece 1 and is threadedly connected with the clamping piece 1, one end of the adjusting screw 41 is rotatably connected with the limiting plate 3, and the other end is fixedly connected with a knob after passing through the clamping piece 1.

[0022] In order to accurately control the movement distance of the limiting plate 3 relative to the clamping piece 1, a scale line 43 is arranged on the outer wall of the guide rod 42 along the length direction of the guide rod 42. The height of the limiting plate 3 can be accurately and quickly adjusted by observing the scale line 43 of the part of the guide rod 42 extending out of the clamping piece 1.

[0023] Since the limiting plate 3 needs to be close to the heating flat plate during use of the device, in order to avoid repeated friction of the limiting plate 3 on the heating flat plate and cause abrasion, a plurality of balls 31 are movably installed on the bottom wall of the limiting plate 3 in the embodiment, and the limiting plate 3 is in rolling contact with the heating flat plate through the balls 31. Abrasion of the limiting plate 3 on the heating flat plate can be avoided, and the limiting plate 3 can avoid contacting the melted wax liquid on the heating flat plate, so that smooth movement of the limiting plate 3 is ensured.

[0024] Further, the clamping piece 1 can be made of transparent material, such as acrylic material, and the top wall of the limiting plate 3 can be observed through the clamping piece 1. An observation opening exposing the top of the ball 31 is formed in the top of the limiting plate 3, and the outer wall of the ball 31 is observed from above the clamping piece 1. An identification pattern is arranged on the outer wall of the ball 31, which can be a painting or a paint spraying on the surface of the ball 31. The identification pattern on the ball 31 is observed through the observation opening, so as to determine whether the ball 31 is in contact with the heating flat plate. When the balls 31 on the two limiting plates 3 are observed to rotate, it is determined that the limiting plates 3 are in contact with the heating flat plate, and the crystal selector is polished to the right position.

[0025] In the embodiment of the present application, the top of the clamping piece 1 is fixedly provided with a holding portion 12, and a space is formed between the two holding portions 12 when the two clamping pieces 1 are combined, so as to accommodate the upper connecting head 53 and the spiral portion 52 of the crystal selector. The operator holds the holding portion 12, so that the space can protect the spiral portion 52 and the upper connecting head 53 of the crystal selector.

[0026] Further, the inner wall of each groove is detachably provided with a rubber pad 13. A connecting groove is formed in the inner wall of the groove, and the rubber pad 13 is fixedly provided with a connecting block. The rubber pad 13 is connected to the inner wall of the groove through the connecting block. When the two clamping pieces 1 are close to each other to clamp the crystal selector, the rubber pad 13 provides a proper elastic allowance, so as to ensure that the crystal selector can be stably clamped and deformed. Meanwhile, different sizes of crystal selectors can be clamped by replacing the rubber pad 13, so as to improve the applicability of the device.

[0027] Those skilled in the art should understand that, although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all the changes and modifications falling within the scope of the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and changes of the present application fall within the scope of the claims of the present application and their equivalents, they are intended to be included in the present application.

Claims

1. A device for rapid end surface grinding and shaping of a wax pattern, characterized by: The utility model provides a crystal picker, including the clamping part formed by two clamping petals (1) hinged to each other, the clamping part includes elastic member (2) for driving two clamping petals (1) to rotate and combine, the bottom of two clamping petals (1) is provided with recess, and the recess of two clamping petals (1) combines and forms the installation groove matched with the lower connector (51) of crystal picker, the outside of recess of each clamping petal (1) is provided with the limit plate (3) of lifting adjustment, and the clamping petal (1) is provided with the adjusting part for adjusting the height of limit plate (3).

2. A device for rapid end-face grinding and shaping of wax patterns according to claim 1, characterized in that Two clamping petals (1) are fixedly provided with clamping plates (11) on the outer wall near the hinge shaft.

3. A device for rapid end-face truing and polishing of wax patterns according to claim 1, wherein: The adjusting part includes adjusting screw (41) and guide rod (42), and the top of the limit plate (3) is vertically connected with the guide rod (42), the limit plate (3) is slidably connected with the clamping petal (1) through the guide rod (42), the adjusting screw (41) passes through the clamping petal (1) and is screw-connected with the clamping petal (1), and one end of the adjusting screw (41) is rotatably connected with the limit plate (3).

4. A device for rapid end-face truing and polishing of wax patterns according to claim 3, wherein The guide rod (42) passes through the clamping petal (1), and the outer wall of the guide rod (42) is provided with scale lines (43) along the length direction of the guide rod (42).

5. A device for rapid end-face truing and polishing of wax patterns according to claim 1, wherein, The bottom wall of the limit plate (3) is movably provided with a plurality of ball bearings (31).

6. A device for rapid end-face truing and polishing of wax patterns according to claim 5, wherein The clamping petal (1) is made of transparent material, the limit plate (3) is provided with an observation port for exposing the top of the ball bearing (31), and the outer wall of the ball bearing (31) is provided with an identification pattern.

7. A device for rapid end-face truing and sizing of wax patterns according to claim 1, wherein: The top of the clamping petal (1) is fixedly provided with a holding part (12), and the holding parts (12) between the two clamping petals (1) form a space for accommodating the upper connector (53) and the spiral part (52) of the crystal picker when the two clamping petals (1) combine.

8. A device for rapid end-face truing and polishing of wax patterns according to claim 1, wherein: The inner wall of the recess is detachably provided with a rubber pad (13).

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