A clamping device for special-shaped brass parts

Abstract

The present invention relates to a clamping device for special-shaped brass parts, comprising a shell, a plurality of claws are installed on the shell, a large bevel gear and a small bevel gear are installed in the shell, the large bevel gear is connected with the plurality of claws for the plurality of claws to move forward and backward, the small bevel gear is meshed with the large bevel gear, a rotating shaft is fixed on the small gear, the inner surface of the claw is a concave arc surface; an extension extending inward is provided at the bottom of the claw, a baffle is provided at one end of the extension not connected to the claw, the baffle and the extension cooperate with the claw to form a slot at the bottom end of the claw, a baffle plate is clamped on the slot; the baffle plate is close to the concave arc surface on one side and matches the size and shape of the concave arc surface, and the other side is a plane. The clamping device for special-shaped brass parts provided by the present invention has good versatility.

Description

Technical Field

[0001] The invention belongs to the technical field of brass piece processing, and in particular relates to a clamping device for special-shaped brass pieces. Background Art

[0002] Brass parts are a common type of metal parts, including brass parts made of regular shapes and brass parts made of irregular shapes. Brass parts made of irregular shapes are collectively referred to as special-shaped brass parts. In the process of processing brass parts, clamping devices are often used. For brass parts made of regular shapes, a universal clamping device can be used according to their shapes. For special-shaped brass parts, due to their irregular appearance, they cannot be clamped by universal clamping devices. Therefore, people have been studying clamping devices for special-shaped brass parts. However, the research direction is only for their own product research, and the versatility is poor. Once the shape of part of the product is improved or a new product is made, the clamping device needs to be remade, or even the original clamping device needs to be scrapped. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a clamping device for special-shaped brass parts to solve the technical problem that the existing clamping devices for special-shaped brass parts have poor versatility.

[0004] In order to achieve the above-mentioned object of the invention, a technical solution provided by the present invention is as follows:

[0005] A clamping device for special-shaped brass parts comprises a shell, a plurality of claws are installed on the shell, a large bevel gear and a small bevel gear are installed in the shell, the large bevel gear is connected with the plurality of claws for advancing and retreating the plurality of claws, the small bevel gear is meshed with the large bevel gear, a rotating shaft is fixed on the small gear, the inner surface of the claw is a concave arc surface; an extension portion extending inward is provided at the bottom of the claw, a baffle is provided at one end of the extension portion not connected to the claw, the baffle plate and the extension portion cooperate with the claw to form a slot at the bottom end of the claw, a baffle plate is clamped on the slot; the baffle plate has a side close to the concave arc surface that matches the size and shape of the concave arc surface, and the other side is a plane.

[0006] Preferably, among the multiple claws, at least one of the adjacent claws is fixed with a clamping block, the clamping block is slidably connected to the claw, and the direction in which the clamping block moves forward and backward is the same as the direction in which the claw moves forward and backward; a support plate is fixed to the claw, and an operating rod is connected to the side of the clamping block close to the outer edge of the claw, and the operating rod passes through the support plate and is slidably connected to the support plate.

[0007] Preferably, among the plurality of the clamping claws, at least one of the adjacent clamping claws is slidably connected to the shell via a slide rail fixed in the shell, and a lifting device for driving the slide rail to move up and down is installed in the shell corresponding to the slide rail.

[0008] Preferably, the lifting device is an electric lifting device.

[0009] Preferably, the electric lifting device is an electric lifting frame, an electric lifting rod or an electric hydraulic lifting device.

[0010] Preferably, the upper portion of the inner surface of the claw is inclined.

[0011] Preferably, among the multiple claws, the outer surface of at least one claw is a convex arc surface; two blocks are arranged on the shell at positions corresponding to the convex arc surface, and the two blocks are distributed in a triangle with the claw with the convex arc surface, and the shape of one side of the two blocks close to the convex arc surface matches the shape and size of the convex arc surface.

[0012] Preferably, the shape of the surface of the two stoppers close to the convex arc surface is an arc surface convex outward.

[0013] Preferably, the shape of the surface of the two stoppers close to the convex arc surface is an inwardly concave arc surface.

[0014] Preferably, among the two stoppers, a side of one of the stoppers close to the convex arc surface is shaped as an inwardly concave arc surface, and a side of the other stopper close to the convex arc surface is shaped as an outwardly convex arc surface.

[0015] The clamping device for special-shaped brass parts provided by the present invention can remove the blocking plate when in use, so that the concave arc surfaces of multiple claws are in contact with the clamped part, which is convenient for clamping a cylindrical or partially cylindrical workpiece; the blocking plate can also be installed so that the blocking plate is in contact with the clamped part to facilitate clamping a prismatic or partially prismatic workpiece that is compatible with it; the blocking plate can also be installed on some of the multiple claws to facilitate clamping special-shaped brass parts with both arc surfaces and flat surfaces to be clamped, and the versatility is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front structural schematic diagram of a clamping device for a special-shaped brass part in Example 1;

[0017] Figure 2 This is a schematic diagram of the internal structure of a clamping device for a special-shaped brass part in Example 1;

[0018] Figure 3 This is a schematic structural diagram of a clamping claw in Example 1;

[0019] Figure 4 for Figure 3 A magnified view at point A;

[0020] Figure 5 This is one of the structural schematic diagrams of the clamping claw of Example 2;

[0021] Figure 6 This is the second structural schematic diagram of the clamping claw of Example 2;

[0022] Figure 7 A schematic diagram of the internal structure of a clamping device for a special-shaped brass part in Example 3;

[0023] Figure 8 A schematic diagram of the internal structure of a clamping device for a special-shaped brass part in Example 4;

[0024] Reference numerals in the figure; housing 1, claw 2, extension part 2-1, baffle 2-2, slot 2-3, baffle plate 2-4; large bevel gear 3, small bevel gear 4, rotating shaft 5, block 6, support plate 7, operating lever 8, lifting device 9, slide rail 10, block 11. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Embodiment 1, the invention provides a clamping device for a special-shaped brass part, see Figure 1-Figure 4 , including a shell 1, a plurality of claws 2 are installed on the shell, a large bevel gear 3 and a small bevel gear 4 are installed in the shell, the large bevel gear can use the existing bevel gear with a flat thread structure on the back, a plurality of claws are arranged circumferentially with the center of the bevel gear as the reference, and the small bevel gear can also use the existing structure, the large bevel gear is connected with the plurality of claws, and is used for the plurality of claws to move forward and backward, the small bevel gear is meshed with the large bevel gear, a rotating shaft 5 is fixed on the small gear, which is used to install a motor or a handle, etc., and the inner surface of the claw is a concave arc surface; an extension portion 2-1 extending inward is provided at the bottom of the claw, and a baffle 2-2 is provided at the end of the extension portion not connected to the claw, the baffle and the extension portion cooperate with the claw to form a slot 2-3 at the bottom end of the claw, and a blocking plate 2-4 is clamped on the slot; the side of the blocking plate close to the concave arc surface matches the size and shape of the concave arc surface, and the other side is a plane.

[0027] When using the above-mentioned clamping device for special-shaped brass parts, the blocking plate can be removed so that the concave arc surfaces of multiple claws are in contact with the clamped part, which is convenient for clamping cylindrical or partially cylindrical workpieces; the blocking plate can also be installed so that the blocking plate is in contact with the clamped part to facilitate clamping a prismatic or partially prismatic workpiece that is adapted to it; the blocking plate can also be installed on some of the multiple claws to facilitate clamping special-shaped brass parts whose clamped parts have both arc surfaces and flat surfaces, and the versatility is better.

[0028] Embodiment 2, Embodiment 2 is a further modification of Embodiment 1, and is different from Embodiment 1 in that: among the plurality of the clamping claws, at least one of the adjacent clamping claws is fixed with a clamping block 6. Figure 5 The clamping block is slidably connected to the clamping claw, and the direction of the forward and backward movement of the clamping block is the same as the direction of the forward and backward movement of the clamping claw; a support plate 7 is fixed on the clamping claw, and an operating rod 8 is connected to the side of the clamping block close to the outer edge of the clamping claw for connecting a handle or a motor, and the operating rod passes through the support plate and is slidably connected to the support plate.

[0029] The structure is used as follows:

[0030] In the first usage mode, the brass part can be clamped by only using the claws, and the usage mode is the same as that of the first embodiment;

[0031] Mode of use 2: the clamping block on the clamping jaw can be quickly approached to the clamped part by means of synchronous movement of the clamping jaw, and then the clamped part can be clamped by adjusting the clamping block. This mode of use is suitable for quickly clamping special-shaped brass parts whose clamping parts are located in the same plane, and the number of clamping blocks is at least 3;

[0032] Mode of use 3: by means of synchronous movement of the clamping jaws, part or all of the clamping jaws can be made to fit the clamped part, and then the clamped part can be clamped by adjusting part or all of the clamping blocks to cooperate with the clamping jaws. This mode of use is suitable for clamping special-shaped brass parts whose clamping parts are located in different planes;

[0033] As a preferred solution, the upper part of the inner surface of the claw is arranged to be inclined, see Figure 6 The length of the inclined portion can generally account for between one-fifth and one-quarter of the length of the inner surface of the claw. The inclination angles of the inclined surfaces of different claws can be different. In this way, when the claw is used in conjunction with the clamping block, the selection range of the clamping surface is wider, which is more conducive to clamping special-shaped brass parts and is suitable for clamping more shapes of the clamped surface of the clamped parts.

[0034] Example 3, Example 3 is a further modification of Example 1 or Example 2, see Figure 7Among the multiple claws, at least one of the adjacent claws is slidably connected to the shell through a slide rail 10 fixed in the shell, and a lifting device 9 for driving the slide rail to move up and down is installed in the shell corresponding to the slide rail. Generally, the lifting device is an electric lifting device, and the electric lifting device is an electric lifting frame, an electric lifting rod or an electric hydraulic lifting device.

[0035] In addition to the usage of embodiment 1 or embodiment 2, the structure also has the following usage:

[0036] Before use, the claw is adjusted to move upward through the lifting device so that the claw is free from the restriction of the flat thread structure on the back of the large bevel gear. The claw can be selectively used to move synchronously. When the claw that needs to be disengaged moves, the claw is adjusted to move downward through the lifting device to restore the restriction of the flat thread on the back of the large bevel gear on the claw. This usage method is suitable for quickly clamping special-shaped brass parts with irregular clamping parts, especially when combined with the structure of Example 2, the effect is better.

[0037] Example 4, Example 4 can be a further modification of one of Examples 1 to 3, see Figure 8 Among the plurality of claws, at least one of the claws has a convex arc surface as its outer surface; two blocks 11 are arranged on the housing at positions corresponding to the convex arc surface, and the two blocks are distributed in a triangular shape with the claws with the convex arc surface, and the shapes of the two blocks close to the convex arc surface match the shape and size of the convex arc surface, wherein the shapes of the two blocks close to the convex arc surface have at least the following three configurations:

[0038] Method 1: The shape of one side of the two blocks close to the convex arc surface is an arc surface convex outwardly. This structure can realize the clamping function of the clamping claws in Examples 1 to 3 by adjusting the slider to move inward. It can also realize the clamping function of the convex arc surface of the two blocks by adjusting the slider to move inward to cooperate with the concave arc-shaped special-shaped brass part.

[0039] Method 2: The shape of one side of the two blocks close to the convex arc surface is an inwardly concave arc surface. This structure can realize the clamping function of the clamping claws in Examples 1 to 3 by adjusting the slider to move inward. The slider can also be adjusted to move inward to cooperate with the inwardly concave arc surfaces of the two blocks to clamp the holding part into a special-shaped brass part with both an inwardly concave arc and an outwardly convex arc.

[0040] Method 3: Among the two blocks, one block has a side close to the convex arc surface that is shaped as an inwardly concave arc surface, and the other block has a side close to the convex arc surface that is shaped as an outwardly convex arc surface. This structure has the same function as Method 2, except that the area of ​​the clamped concave arc is different.

[0041] Of course, you can also select two or more than two claws from the multiple claws to set blocks on the outside. The blocks can also be set in a way that can control the forward and backward movement. This can be easily obtained by those skilled in the art according to the above solution and will not be repeated here.

[0042] The above-mentioned embodiments only express the implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A clamping device for a special-shaped brass part, comprising a housing (1), a plurality of claws (2) being mounted on the housing, a large bevel gear (3) and a small bevel gear (4) being mounted in the housing, the large bevel gear being connected to the plurality of claws for the plurality of claws to move forward and backward, the small bevel gear being meshed with the large bevel gear, a rotating shaft (5) being fixed to the small bevel gear, characterized in that: The inner surface of the claw is a concave arc surface; An inwardly extending extension portion (2-1) is provided at the bottom of the claw, a baffle plate (2-2) is provided at one end of the extension portion not connected to the claw, the baffle plate and the extension portion cooperate with the claw to form a slot (2-3) at the bottom end of the claw, and a baffle plate (2-4) is clamped on the slot; One side of the blocking plate close to the concave arc surface matches the size and shape of the concave arc surface, and the other side is a plane; Among the plurality of the clamping claws, at least one of the adjacent clamping claws is fixed with a clamping block (6), the clamping block is slidably connected to the clamping claw, and the direction in which the clamping block moves forward and backward is the same as the direction in which the clamping claw moves forward and backward; A support plate (7) is fixed on the claw, and an operating rod (8) is connected to one side of the clamping block close to the outer edge of the claw, and the operating rod passes through the support plate and is slidably connected to the support plate; Among the plurality of claws, the outer surface of at least one claw is a convex arc surface.

2. A clamping device for a special-shaped brass part according to claim 1, characterized in that: Among the plurality of the clamping claws, at least one of the adjacent clamping claws is slidably connected to the shell via a slide rail (10) fixed in the shell, and a lifting device (9) for driving the slide rail to move up and down is installed in the shell corresponding to the slide rail.

3. The clamping device for a special-shaped brass part according to claim 2, characterized in that: The lifting device is an electric lifting device.

4. A clamping device for a special-shaped brass part according to claim 3, characterized in that: The electric lifting device is an electric lifting frame, an electric lifting rod or an electric hydraulic lifting device.

5. The clamping device for a special-shaped brass part according to claim 2, characterized in that: The upper portion of the inner surface of the claw is inclined.

6. The clamping device for a special-shaped brass part according to claim 1, characterized in that: Two stoppers (11) are arranged on the shell at positions corresponding to the convex arc surface. The two stoppers and the claws with the convex arc surface are distributed in a triangular shape. The shapes of the two sides of the stoppers close to the convex arc surface match the shape and size of the convex arc surface.

7. A clamping device for a special-shaped brass part according to claim 6, characterized in that: The shape of the surface of the two stoppers close to the convex arc surface is an arc surface convex outwards.

8. The clamping device for a special-shaped brass part according to claim 6, characterized in that: The shape of the surface of the two stoppers close to the convex arc surface is an inwardly concave arc surface.

9. The clamping device for a special-shaped brass part according to claim 6, characterized in that: Among the two stoppers, one of the stoppers has a side close to the convex arc surface in the shape of an inwardly concave arc surface, and the other stopper has a side close to the convex arc surface in the shape of an outwardly convex arc surface.

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