Efficient gear shaping clamp with hook-shaped pressing plate

Abstract

The utility model belongs to the technical field of gear shaping machining, and relates to a hook-shaped pressing plate efficient gear shaping clamp which comprises a clamp body for clamping a thin-wall gear ring, a plurality of guide columns are arranged in the clamp body in the circumferential direction, and the upper ends of the guide columns extend out of the clamp body and are fixedly connected with hook-shaped pressing plates for pressing the thin-wall gear ring. The lower end of the guide column is connected with the pull rod and is driven by the pull rod to slide in the axial direction, a spiral groove is formed in the guide column, a positioning pin matched with the spiral groove is arranged on the clamp body, and when the guide column slides in the axial direction, the spiral groove and the positioning pin are matched to drive the guide column to generate angular transposition at the same time. The efficient gear shaping clamp with the hook-shaped pressing plate has the advantages of being simple in structure, low in manufacturing cost, efficient in clamping and high in positioning accuracy.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear shaping processing and relates to a hook-shaped pressure plate high-efficiency gear shaping fixture. Background Art

[0002] In machining, a thin-walled gear ring is often processed by gear shaping. There are many clamping methods, such as lever pressure plate type, elastic sleeve type, liquid expansion type, etc. However, most of these clamping methods have complex structures, high costs, and insufficient clamping speed. Therefore, it is very necessary to develop a gear shaping fixture with simple structure, low cost, efficient clamping, and high positioning accuracy. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a hook-shaped pressure plate high-efficiency gear-slotting clamp, which has the advantages of simple structure, low cost, high clamping efficiency and high positioning accuracy.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0005] A hook-shaped pressure plate high-efficiency gear-insertion clamp comprises a clamp body for clamping a thin-walled gear ring, a plurality of guide pillars are arranged on the inner circumference of the clamp body, the upper ends of the guide pillars extend out of the clamp body and are fixedly connected with a hook-shaped pressure plate for clamping the thin-walled gear ring, the lower ends of the guide pillars are connected to a pull rod and are driven by the pull rod to slide axially, a spiral groove is arranged on the guide pillar, and a positioning pin cooperating with the spiral groove is arranged on the clamp body, when the guide pillar slides axially, the spiral groove and the positioning pin cooperate to drive the guide pillar to simultaneously produce angular rotation.

[0006] In the above-mentioned hook-shaped pressure plate high-efficiency gear-inserting clamp, preferably, the spiral groove includes an upper sliding section, a spiral transition section and a lower sliding section; in the clamped state, the positioning pin is located in the upper sliding section, and in the loosened state, the positioning pin is located in the lower sliding section.

[0007] In the above-mentioned hook-shaped pressure plate high-efficiency gear-inserting fixture, preferably, the rotation angle of the spiral groove is 90°.

[0008] In the above-mentioned hook-shaped pressure plate high-efficiency gear-slotting fixture, the guide pillars are provided in a number of 4 to 10 and are evenly distributed along the circumference. Preferably, the guide pillars are provided in a number of 6 or 8.

[0009] In the above-mentioned hook-shaped pressure plate high-efficiency gear-inserting clamp, the positioning pin is radially arranged to penetrate the clamp body, and the clamp body is provided with a countersunk hole that cooperates with the positioning pin head. The tail end of the positioning pin extends into the spiral groove to form a circumferential limit.

[0010] In the above-mentioned hook-shaped pressure plate high-efficiency gear shaping clamp, the guide column is connected to the pull rod through a connecting plate, the lower end of the guide column is in clearance fit with the connecting plate, and an axial limiter is provided at the bottom of the guide column. Preferably, the axial limiter is a limit nut. The guide column and the connecting plate may also use other connection structures, such as a sleeve connection, as long as an axially limited rotational connection is formed. In the above-mentioned hook-shaped pressure plate high-efficiency gear shaping clamp, the pull rod is coaxially arranged with the clamp body and connected to the tensioning cylinder of the gear shaping machine or the gear turning machine, and the tensioning cylinder drives the pull rod to move up and down when it pushes up and pulls down.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model provides a hook-shaped pressure plate high-efficiency gear-slotting fixture, which drives the guide column to axially displace through a pull rod and generates angular rotation at the same time of axial displacement, so that the hook-shaped pressure plate at the upper end of the guide column rotates inward or outward, thereby quickly pressing or releasing the end face of the workpiece. The fixture provided by the utility model makes it very fast to clamp the gear-slotting and gear-scraping of thin-walled gear rings during machining, and can be equipped with a manipulator to realize automated operation in large-scale production. The utility model has the advantages of simple structure, low cost, high clamping efficiency, and high positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the utility model;

[0014] Figure 2 It is an axial cross-sectional view of the utility model in an unclamped state;

[0015] Figure 3 It is an axial cross-sectional view of the utility model in a clamping state;

[0016] Figure 4 It is a three-dimensional diagram of the guide column of the utility model;

[0017] Figure numerals: 1. thin-walled gear ring; 2. clamping body; 3. guide column; 4. hook-shaped pressure plate; 5. pull rod; 6. spiral groove; 7. positioning pin; 8. upper sliding section; 9. spiral transition section; 10. lower sliding section; 11. connecting plate; 12. axial limit piece. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings. Figure 1-4 :

[0019] A hook-shaped pressure plate high-efficiency gear-insertion clamp comprises a clamp body 2 for clamping a thin-walled gear ring 1, a plurality of guide pillars 3 are arranged in the inner circumferential direction of the clamp body 2, the upper ends of the guide pillars 3 extend out of the clamp body 2 and are fixedly connected with a hook-shaped pressure plate 4 for clamping the thin-walled gear ring 1, the lower ends of the guide pillars 3 are connected with a pull rod 5 and are driven by the pull rod 5 to slide axially, a spiral groove 6 is arranged on the guide pillar 3, and a positioning pin 7 cooperating with the spiral groove 6 is arranged on the clamp body 2, when the guide pillar 3 slides axially, the spiral groove 6 cooperates with the positioning pin 7 to drive the guide pillar 3 to simultaneously produce angular rotation.

[0020] The working principle of this embodiment is: when the oil cylinder is pulled down, the pulling force is transmitted to the guide rod through the pull rod 5, and the guide rod spirals down inwards under the action of the spiral groove 6 and the positioning pin 7, so that the hook-shaped pressure plate fixed on the upper end of the guide rod horizontally presses the end surface of the workpiece. Conversely, when the oil cylinder is pushed up, the guide rod spirals up outwards under the action of the spiral groove 6 and the positioning pin 7, and the pressure plate quickly releases the end surface of the workpiece.

[0021] Compare with Figure 4 Preferably, the spiral groove 6 includes an upper sliding section 8, a spiral transition section 9 and a lower sliding section 10; in the clamped state, the positioning pin 7 is located in the upper sliding section 8, and in the loosened state, the positioning pin 7 is located in the lower sliding section 10. By setting the upper sliding section 8,

[0022] Preferably, the rotation angle of the spiral groove 6 is 90°.

[0023] The guide pillars 3 are provided in 4-10 numbers and are evenly distributed along the circumference. Preferably, the guide pillars 3 are provided in 6 or 8 numbers. Figure 1 In this embodiment, the number of the guide pillars 3 is 6.

[0024] Compare with Figure 2 and attached Figure 3 The specific structure of the positioning pin 7 in this embodiment is: the positioning pin 7 is arranged to penetrate the clamp body 2 radially, the clamp body 2 is provided with a countersunk hole that cooperates with the head of the positioning pin 7, and the tail end of the positioning pin 7 extends into the spiral groove 6 to form a circumferential limit.

[0025] The guide column 3 and the connecting plate 11 form an axially limited rotation connection. In this embodiment, the specific structure is: the guide column 3 is connected to the pull rod 5 through the connecting plate 11, and the lower end of the guide column 3 is clearance-matched with the connecting plate 11. When the connecting plate 11 pulls the guide column 3 upward or downward, the guide column 3 can rotate relative to the connecting plate 11, and an axial limiter 12 is provided at the bottom of the guide column 3. Preferably, the axial limiter 12 is a limit nut.

[0026] The pull rod 5 is coaxially arranged with the clamp body 2 and connected to the tensioning cylinder of the gear shaping machine or the gear cutting machine. When the tensioning cylinder pushes up and pulls down, the pull rod 5 is driven to move up and down.

[0027] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hook-shaped pressure plate high-efficiency gear-slotting fixture, comprising a clamp body (2) for clamping a thin-walled gear ring (1), characterized in that: A plurality of guide pillars (3) are arranged on the inner circumference of the clamp body (2); the upper ends of the guide pillars (3) extend out of the clamp body (2) and are fixedly connected with a hook-shaped pressure plate (4) for clamping the thin-walled gear ring (1); the lower ends of the guide pillars (3) are connected with the pull rod (5) and driven by the pull rod (5) to slide axially; a spiral groove (6) is arranged on the guide pillar (3); a positioning pin (7) cooperating with the spiral groove (6) is arranged on the clamp body (2); when the guide pillar (3) slides axially, the spiral groove (6) and the positioning pin (7) cooperate to drive the guide pillar (3) to simultaneously produce angular rotation.

2. A hook-shaped pressure plate high-efficiency gear-slotting fixture according to claim 1, characterized in that: The spiral groove (6) comprises an upper sliding section (8), a spiral transition section (9) and a lower sliding section (10); in a clamped state, the positioning pin (7) is located in the upper sliding section (8), and in a loosened state, the positioning pin (7) is located in the lower sliding section (10).

3. A hook-shaped pressure plate high-efficiency gear-slotting fixture according to claim 1, characterized in that: The rotation angle of the spiral groove (6) is 90°.

4. The hook-shaped pressure plate high-efficiency gear-slotting fixture according to claim 1, characterized in that: The guide pillars (3) are provided in a number of 4 to 10 and are evenly distributed along the circumferential direction.

5. The hook-shaped pressure plate high-efficiency gear-slotting fixture according to claim 1, characterized in that: The positioning pin (7) is radially penetrated through the clamp body (2), and the clamp body (2) is provided with a countersunk hole matched with the head of the positioning pin (7). The tail end of the positioning pin (7) extends into the spiral groove (6) to form a circumferential limit.

6. The hook-shaped pressure plate high-efficiency gear-slotting fixture according to claim 1, characterized in that: The guide column (3) is connected to the pull rod (5) via a connecting plate (11), the lower end of the guide column (3) is clearance-matched with the connecting plate (11), and an axial limit piece (12) is provided at the bottom of the guide column (3).

7. A hook-shaped pressure plate high-efficiency gear-slotting fixture according to claim 6, characterized in that: The pull rod (5) is coaxially arranged with the clamp body (2) and is connected to the tensioning cylinder of the gear shaping machine or the gear cutting machine.

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