Five-axis machining center milling impeller clamp accurate in positioning

Abstract

The five-axis machining center milling impeller clamp comprises a clamp base, a limiting base and a movable clamping block, a movable cavity is formed in the center of the interior of the clamp base, and an electric telescopic rod is fixedly installed in the center of one end of the movable cavity in the clamp base through a bolt. A supporting block is fixedly installed at the top end of the electric telescopic rod through a bolt, a limiting base is fixedly installed at the center of one side of the electric telescopic rod on the clamp base through a bolt, and fixing sliding grooves are formed in the two ends of the top of the limiting base. A limiting plate stably moves back and forth oppositely or reversely on a limiting base, impeller chassis of different specifications and sizes are clamped in the middle through a movable clamping block connected with a positioning rod on the limiting plate, and a supporting block drives a positioning block to push an impeller through a supporting rod and a movable groove when an electric telescopic rod is pushed. And pushing and clamping are completed under the same motor, the structure is simple and stable, and positioning is accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning fixtures, in particular to a fixture for milling impellers of a five-axis machining center with accurate positioning. Background Art

[0002] The impeller refers to both the wheel disc with moving blades, which is a component of the impulse turbine rotor, and the general term for the wheel disc and the rotating blades mounted on it. Impellers can be classified according to their shape and opening and closing conditions. Traditional impeller production generally uses a mold to cast the blade shape, and then a lathe clamps the outer circle to turn the first step, and the inner hole to turn the second step. After dynamic balancing tests, the above method produces the finished impeller casting. The impeller cycle is long, the cost is high, and the precision and life are relatively low. The current new process uses a lathe to turn the semi-finished product into a fixture for positioning, and then uses a five-axis machining center to mill the impeller.

[0003] Currently, the impellers need to be queued and clamped in sequence before five-axis machining, which saves time and effort when they are subsequently processed in the five-axis machining center, and there is no need to align the holes of the impellers. In this regard, the utility model provides a five-axis machining center milling impeller fixture with accurate positioning. Utility Model Content

[0004] The purpose of this application is to provide a five-axis machining center milling impeller fixture with accurate positioning to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a five-axis machining center milling impeller fixture with accurate positioning, comprising a fixture seat, a limiting base and a movable clamping block, a movable cavity is opened at the inner center of the fixture seat, an electric telescopic rod is fixedly installed at the center of one end of the movable cavity in the fixture seat by bolts, a support block is fixedly installed at the top of the electric telescopic rod by bolts, the limiting base is fixedly installed on the fixture seat at the center of one side of the electric telescopic rod by bolts, the limiting base is fixedly installed at the bottom center of the movable cavity in the fixture seat, the The top end of the positioning rod is fixed to the top side of the clamp seat, and the top end of the positioning rod is fixed to the movable clamping block that is movable on the top side of the clamp seat by bolts, and a positioning block is movably provided on the clamp seat between the center of one end of the movable clamping block.

[0006] Preferably, a fixed sliding block is slidably connected to the limiting base in the fixed sliding groove, and both ends of the bottom of the limiting plate are fixedly mounted on the fixed sliding block by bolts.

[0007] Preferably, a wedge block is fixedly installed on one side of the movable clamping block by bolts, and the wedge blocks are all made of plastic material.

[0008] Preferably, a limiting groove that matches the size of the positioning rod is opened on the top of one end of the movable cavity on the clamp seat, and the positioning rod movably passes through the limiting groove.

[0009] Preferably, a support rod is fixedly installed at the top center of the support block by bolts, and the top end of the support rod is fixedly installed at the bottom center of the positioning block by bolts, and the positioning block is movable on the top outside of the clamp seat.

[0010] Preferably, a movable groove that matches the size of the support rod is opened on the clamp seat at the center of the top of the other end of the movable cavity, and the support rod movably passes through the movable groove.

[0011] Preferably, the positioning block moves at the center of one end of the movable clamping block, and the movable clamping block moves symmetrically at both ends of the top of the clamp seat.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] 1. In the utility model, the support block is driven to move back and forth by the movement of the electric telescopic rod. During the movement, the support block supports and connects the limit plate on the limit base through the hinge and the hinge rod, so that the limit plate can stably move back and forth relative to or opposite to each other on the limit base. The movable clamping block on the limit plate connected by the positioning rod clamps the impeller chassis of different specifications in the center, and the clamping is stable.

[0014] 2. In the utility model, the support block also drives the positioning block to push the impeller through the support rod and the movable groove when the electric telescopic rod is pushed, so that the impeller enters between the movable clamping blocks, which is convenient for the subsequent clamping effect. The pushing and clamping are completed under the same motor, the structure is simple and stable, and the positioning is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1This is a schematic three-dimensional diagram of the overall structure of an accurate positioning five-axis machining center impeller milling fixture in an embodiment of the present application;

[0017] Figure 2 This is a schematic three-dimensional diagram of the internal structure of the movable cavity of a five-axis machining center impeller milling fixture with accurate positioning in an embodiment of the present application;

[0018] Figure 3 This is a schematic three-dimensional diagram of the connection structure of the limiting base of a five-axis machining center milling impeller fixture with accurate positioning in an embodiment of the present application;

[0019] Figure 4 This is a schematic three-dimensional diagram of the movable clamp structure of a five-axis machining center impeller milling fixture with accurate positioning in an embodiment of the present application.

[0020] In the figure: 1. Clamp seat; 11. Movable cavity; 12. Electric telescopic rod; 13. Support block; 14. Positioning block; 15. Limiting groove; 16. Support rod; 17. Limiting groove; 2. Limiting base; 21. Fixed slide; 22. Limiting plate; 23. Hinge; 24. Hinge rod; 25. Positioning rod; 26. Fixed slider; 3. Movable clamping block; 31. Wedge block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example: Reference Figure 1-4The illustrated embodiment of a five-axis machining center milling impeller fixture with accurate positioning includes a fixture base 1, a limiting base 2 and a movable clamping block 3. A movable cavity 11 is provided at the inner center of the fixture base 1. An electric telescopic rod 12 is fixedly installed at the center of one end of the movable cavity 11 in the fixture base 1 by bolts. A support block 13 is fixedly installed at the top of the electric telescopic rod 12 by bolts, which drives the clamping and positioning effect. The structure is stable and simple. A limiting base 2 is fixedly installed on the fixture base 1 at the center of one side of the electric telescopic rod 12 by bolts. The limiting base 2 is fixedly installed at the bottom center of the movable cavity 11 in the fixture base 1. Fixed slide grooves 21 are provided at both ends of the top of the limiting base 2. The limit plate 22 is movably connected to support the movement of the limit plate 22. The structure is simple. A hinge rod 24 is movably connected between the center of one end of the top of the limit plate 22 and the two ends of one side of the support block 13 through a hinge 23. The rotation connection has the effect of converting the back and forth movement into object clamping. A positioning rod 25 is fixedly installed on the top of the limit plate 22 at the center of one side of the hinge 23 by bolts. The top end of the positioning rod 25 extends through to the top side of the clamp seat 1. The top end of the positioning rod 25 is fixedly installed with a movable clamping block 3 that is movable on one side of the top of the clamp seat 1 by bolts. A positioning block 14 is movably provided between the centers of one end of the movable clamping block 3 on the clamp seat 1, which is connected through to achieve clamping and positioning.

[0023] See Figure 2 、 Figure 3 Figure 4 , a fixed slider 26 is slidably connected to the limit base 2 in the fixed slide groove 21, and the bottom ends of the limit plate 22 are fixedly installed on the fixed slider 26 by bolts. The movable limit structure is simple, and a wedge block 31 is fixedly installed on one side of the movable clamping block 3 by bolts, and the wedge blocks 31 are all made of plastic material. The clamping structure is stable, and a limiting groove 15 that matches the size of the positioning rod 25 is opened at the top of one end of the movable cavity 11 on the clamp seat 1. The positioning rod 25 is movable and runs through the limiting groove 15. A support rod 16 is fixedly installed at the top center of the support block 13 by bolts, supporting The top end of the rod 16 is fixedly installed at the bottom center of the positioning block 14 by bolts. The positioning block 14 moves on the top outside of the clamp seat 1, penetrates the connection, and drives and pushes synchronously. A movable groove 17 that matches the size of the support rod 16 is opened on the clamp seat 1 at the top center of the other end of the movable cavity 11. The support rod 16 moves through the movable groove 17 and moves through the support. The positioning block 14 moves at the center of one end of the movable clamping block 3, and the movable clamping block 3 moves symmetrically at the two ends of the top of the clamp seat 1, achieving the dual effects of centering push and positioning clamping in impeller processing, and the design is ingenious.

[0024] The practical working principle of this invention is as follows: the support block is driven to move back and forth by the movement of the electric telescopic rod. During the movement, the support block supports and connects the limit plate on the limit base through the hinge and the hinge rod, so that the limit plate can stably move back and forth relative to or oppositely on the limit base. The movable clamping block connected to the positioning rod on the limit plate clamps the impeller chassis of different specifications in the center. When the electric telescopic rod is pushed, the support block also drives the positioning block through the support rod and the movable groove to push the impeller, so that the impeller enters between the movable clamping blocks, which is convenient for the subsequent clamping effect. The pushing and clamping are completed under the same motor, with a simple and stable structure and accurate positioning.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A five-axis machining center impeller milling fixture with accurate positioning, comprising a fixture base (1), a limiting base (2) and a movable clamping block (3), characterized in that: A movable cavity (11) is provided at the inner center of the clamp seat (1), an electric telescopic rod (12) is fixedly installed at the center of one end of the movable cavity (11) in the clamp seat (1) by means of bolts, a support block (13) is fixedly installed at the top of the electric telescopic rod (12) by means of bolts, a limiting base (2) is fixedly installed at the center of one side of the electric telescopic rod (12) on the clamp seat (1) by means of bolts, the limiting base (2) is fixedly installed at the bottom center of the movable cavity (11) in the clamp seat (1), fixed sliding grooves (21) are provided at both ends of the top of the limiting base (2), and the movable ends of the top of the limiting base (2) are fixedly installed. A limiting plate (22) is connected, and a hinge rod (24) is movably connected between the center of one end of the top of the limiting plate (22) and the two ends of one side of the support block (13) through a hinge (23). A positioning rod (25) is fixedly installed on the top of the limiting plate (22) at the center of one side of the hinge (23) by bolts, and the top end of the positioning rod (25) extends through and extends to the top side of the clamp seat (1). The top end of the positioning rod (25) is fixedly installed with the movable clamping block (3) that is movably installed on the top side of the clamp seat (1) by bolts, and a positioning block (14) is movably provided on the clamp seat (1) between the center of one end of the movable clamping block (3).

2. The fixture for milling impellers in a five-axis machining center with accurate positioning according to claim 1, characterized in that: A fixed slide block (26) is slidably connected to the limiting base (2) in the fixed slide groove (21), and both ends of the bottom of the limiting plate (22) are fixedly mounted on the fixed slide block (26) by bolts.

3. The fixture for milling an impeller in a five-axis machining center with accurate positioning according to claim 1 is characterized in that: A wedge block (31) is fixedly mounted on one side of the movable clamping block (3) via bolts, and the wedge block (31) is made of plastic material.

4. The fixture for milling impellers in a five-axis machining center with accurate positioning according to claim 1 is characterized in that: A limiting groove (15) having a size matching that of the positioning rod (25) is provided on the clamp seat (1) at the top of one end of the movable cavity (11), and the positioning rod (25) is movable and passes through the limiting groove (15).

5. The fixture for milling impellers in a five-axis machining center with accurate positioning according to claim 1 is characterized in that: A support rod (16) is fixedly mounted at the top center of the support block (13) by means of bolts, and the top end of the support rod (16) is fixedly mounted at the bottom center of the positioning block (14) by means of bolts, and the positioning block (14) is movable outside the top of the clamp seat (1).

6. The fixture for milling an impeller in a five-axis machining center with accurate positioning according to claim 5, characterized in that: A movable groove (17) having a size matching that of the support rod (16) is provided on the clamp seat (1) at the top center of the other end of the movable cavity (11), and the support rod (16) is movable and passes through the movable groove (17).

7. The fixture for milling an impeller in a five-axis machining center with accurate positioning according to claim 1, characterized in that: The positioning block (14) moves at the center of one end of the movable clamping block (3), and the movable clamping block (3) moves symmetrically at both ends of the top of the clamp seat (1).

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