Special-shaped part clamp and lathe

Abstract

The utility model relates to a special-shaped part clamp and a lathe, and the special-shaped part clamp comprises a base of which one end is used for being clamped by a chuck, a profiling positioning block which is detachably connected to the other end of the base, and a pressing assembly of which one end is rotatably connected to the base, the base and the profiling positioning block share the same central axis with the chuck, an insertion hole for inserting a special-shaped part is formed in the outer side of the profiling positioning block, a pressing hole communicated with the insertion hole is formed in the side face of the profiling positioning block, and the other end of the pressing assembly is detachably connected to the base and transversely arranged at an opening of the pressing hole. The opposite sides of the hole wall of the inserting hole and the pressing assembly are both profiling faces matched with the side face of the special-shaped part. The special-shaped part clamping device can stably clamp special-shaped parts, and the stability during machining is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamp for special-shaped parts and a lathe. Background Art

[0002] Special-shaped parts, also known as non-standard parts, refer to parts with irregular shapes. Such parts usually have irregular shapes and cannot be manufactured according to standard parts. They need to be designed and produced separately. Therefore, when using the conventional clamping method, that is, using the lathe chuck's clamping claws to clamp special-shaped parts, it is impossible to find an effective clamping position to ensure the clamping stability of special-shaped parts. Utility Model Content

[0003] The utility model provides a special-shaped parts clamp and a lathe, which can realize the stable clamping of the special-shaped parts and ensure the stability during processing.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] On the one hand, the utility model provides a special-shaped parts clamp, including a base with one end for being clamped by a chuck, a contoured positioning block detachably connected to the other end of the base, and a clamping assembly rotatably connected to the base at one end, the base and the contoured positioning block are both coaxial with the chuck, a socket for inserting special-shaped parts is provided on the outer side of the contoured positioning block, and a clamping hole connected to the socket is provided on the side, the other end of the clamping assembly is detachably connected to the base and placed horizontally at the opening of the clamping hole, and the hole wall of the socket and the side facing the clamping assembly are both contoured surfaces adapted to the side of the special-shaped part.

[0006] The beneficial effects of the utility model are as follows: the base forms a transition structure for clamping the special-shaped part so as to be clamped by the chuck, and after the clamping end of the special-shaped part is inserted into the insertion hole, the clamping end of the special-shaped part is pressed into the insertion hole by the clamping assembly, thereby realizing the stable clamping of the special-shaped part and ensuring the stability during processing; and because the base and the contoured positioning block are coaxial with the chuck, when the chuck rotates, the rotation center line of the special-shaped part is always consistent and is a line, so as to ensure the processing accuracy.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the clamping assembly includes a rotating seat detachably connected to the base, a clamping plate rotatably connected to the rotating seat at one end, and a clamping bolt whose rod passes through the other end of the clamping plate, the clamping plate is placed horizontally at the opening of the clamping hole, and the rod of the clamping bolt is threadedly connected to the base.

[0009] The beneficial effect of adopting the above further solution is that when the clamping end of the special-shaped part is pressed into the socket by the pressing assembly, the pressing plate is rotated and the rod of the pressing bolt is threadedly connected to the base.

[0010] Furthermore, a contoured clamping block is connected to the middle end of the clamping plate, and the sides of the contoured clamping block and the hole wall of the jack facing each other are contoured surfaces adapted to the side surfaces of the special-shaped parts.

[0011] The beneficial effect of adopting the above further solution is that the clamping end of the special-shaped part is pressed tightly into the insertion hole by using the contoured pressing block.

[0012] Furthermore, the rotating seat includes a fixing rod with one end detachably connected to the base and a rotating shaft rotatably connected to the other end of the fixing rod, and one end of the clamping plate is rotatably connected to the rotating shaft.

[0013] The beneficial effect of adopting the above further solution is that when the pressing plate is rotated, the pressing plate rotates with the rotating shaft as the central axis.

[0014] Furthermore, one end of the base is provided with a positioning surface for abutting against the side surface of the claw of the chuck.

[0015] The beneficial effect of adopting the above further solution is that when one end of the base is extended into the chuck to be clamped by a plurality of claws, the extension length of the base can be positioned by the positioning surface abutting against the side surface of the claw.

[0016] Furthermore, a mounting hole is provided on the other end side of the base, and the contoured positioning block is adapted to and detachably connected to the mounting hole.

[0017] The beneficial effect of adopting the above further solution is that the profiling positioning block can be installed through the installation hole.

[0018] Furthermore, the other end of the base for mounting the contoured positioning block is provided with a limiting surface for abutting against the special-shaped part.

[0019] The beneficial effect of adopting the above further solution is: the insertion length of the special-shaped part inserted into the insertion hole is limited by the limiting surface.

[0020] Furthermore, the other end of the base for mounting the contoured positioning block is provided with a clamping table, and the clamping assembly is arranged on the clamping table.

[0021] The beneficial effect of adopting the above further solution is that the pressing table surface serves as the mounting surface of the pressing assembly to ensure that the pressing assembly can press the special-shaped parts smoothly.

[0022] Furthermore, the other end of the base for mounting the contoured positioning block is connected with at least two fastening screws, the fastening screws are evenly arranged, and the ends of the fastening screws are inserted into the contoured positioning block.

[0023] The beneficial effect of adopting the above further solution is that the fastening screws are used to achieve the fastening installation of the contoured positioning block.

[0024] On the other hand, the utility model provides a lathe, which includes the above-mentioned special-shaped parts fixture.

[0025] The beneficial effects of the utility model are: it is convenient to use the special-shaped part clamp to clamp and fix the special-shaped parts, the replaceable contour positioning block and the replaceable clamping assembly improve the stability and versatility during the processing of special-shaped parts, the base has a positioning surface to realize off-machine clamping, and it is also convenient to take out the special-shaped parts after processing, the operation steps are few, the operation is simple and quick, and the processing efficiency of special-shaped parts is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the installation structure of the special-shaped parts fixture of the utility model;

[0027] Figure 2 This is a first-view structural diagram of the special-shaped parts fixture of the utility model;

[0028] Figure 3 It is an exploded view of the special-shaped parts fixture of the utility model;

[0029] Figure 4 This is a structural diagram of the special-shaped parts fixture of the utility model from a second viewing angle.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Chuck; 11. Claw;

[0032] 2. Special-shaped parts;

[0033] 3. Base; 31. Positioning surface; 32. Mounting hole; 33. Limiting surface; 34. Pressing table; 35. Fastening screw;

[0034] 4. Profiling positioning block; 41. Socket; 42. Pressing hole;

[0035] 5. Clamping assembly; 51. Rotating seat; 511. Fixed rod; 512. Rotating shaft; 52. Clamping plate; 521. Contoured clamping block; 53. Clamping bolt. DETAILED DESCRIPTION

[0036] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0037] First, the chuck used for clamping parts on a lathe is described. Generally, the chuck is mainly composed of three parts: a chuck body, a movable jaw, and a jaw driving mechanism. According to the number of jaws, the chuck can be divided into a two-jaw chuck, a three-jaw chuck, a four-jaw chuck, a six-jaw chuck, and a special chuck. The attached drawings of the utility model only show a three-jaw chuck.

[0038] The following structure is attached Figure 1-4 The utility model is elaborated in detail.

[0039] On the one hand, the utility model provides a special-shaped parts fixture, which is described in detail below.

[0040] Example 1

[0041] like Figure 1 , Figure 2 as well as Figure 3 A special-shaped parts fixture comprises a base 3 for being clamped by a chuck 1 at one end, a contour positioning block 4 detachably connected to the other end of the base 3, and a clamping assembly 5 rotatably connected to the base 3 at one end, the base 3 and the contour positioning block 4 are coaxial with the chuck 1, a plug hole 41 for inserting the special-shaped part 2 is provided on the outer side of the contour positioning block 4, and a clamping hole 42 connected to the plug hole 41 is provided on the side, the other end of the clamping assembly 5 is detachably connected to the base 3 and is horizontally placed at the opening of the clamping hole 42, and the hole wall of the plug hole 41 and the side facing the clamping assembly 5 are both contoured surfaces adapted to the side of the special-shaped part 2.

[0042] The beneficial effects of this embodiment are as follows: the base 3 forms a transition structure for clamping the special-shaped part 2 so as to be clamped by the chuck 1, and after the clamping end of the special-shaped part 2 is inserted into the insertion hole 41, the clamping end of the special-shaped part 2 is pressed into the insertion hole 41 by the clamping assembly 5, thereby achieving stable clamping of the special-shaped part 2 and ensuring stability during processing; and because the base 3 and the contoured positioning block 4 are coaxial with the chuck 1, when the chuck 1 rotates, the rotation center line of the special-shaped part 2 is always consistent and is a line, so as to ensure processing accuracy.

[0043] By detachably connecting the contour positioning block 4 to the base 3 so as to be replaceable at any time, the versatility of the tooling is increased, the cost of the tooling fixture is reduced, and the processing accuracy can be controlled within 0.01 mm.

[0044] Based on the above embodiment, the contoured positioning block 4 is overall in a "U" shape, with its outer side being used for detachable connection to the other end of the base 3, and its inner side forming a contoured surface adapted to the side of the special-shaped part 2, and opening in the horizontal direction to form an insertion hole 41 for the special-shaped part 2 to be inserted, and opening upward to form a clamping hole 42 for the clamping assembly 5 to press downward on the special-shaped part 2 inserted into the insertion hole 41.

[0045] Example 2

[0046] like Figure 1 , Figure 2 as well as Figure 3 On the basis of Example 1, the clamping assembly 5 includes a rotating seat 51 detachably connected to the base 3, a clamping plate 52 rotatably connected to the rotating seat 51 at one end, and a clamping bolt 53 with a rod passing through the other end of the clamping plate 52. The clamping plate 52 is horizontally placed at the opening of the clamping hole 42, and the rod of the clamping bolt 53 is threadedly connected to the base 3.

[0047] The beneficial effect of adopting the preferred solution in the above embodiment is that when the clamping end of the special-shaped part 2 is pressed into the insertion hole 41 by the pressing assembly 5, the pressing plate 52 is rotated and the rod of the pressing bolt 53 is threadedly connected to the base 3.

[0048] Specifically, the clamping plate 52 is in the shape of an elongated plate, one end of which is in a U-shaped opening structure to achieve a rotatable connection with the rotating seat 51 , and the other end is provided with a through hole for the insertion of the clamping bolt 53 .

[0049] On the basis of the above embodiment, a gasket is sleeved on the clamping bolt 53 to reduce the possibility of loosening due to vibration.

[0050] Example 3

[0051] like Figure 1 , Figure 2 as well as Figure 3 On the basis of embodiments 1 and 2, the middle end of the clamping plate 52 is connected with a contoured clamping block 521, and the sides of the contoured clamping block 521 and the hole wall of the jack 41 facing each other are contoured surfaces adapted to the side of the special-shaped part 2.

[0052] The beneficial effect of adopting the preferred solution in the above embodiment is that the clamping end of the special-shaped part 2 is pressed tightly into the insertion hole 41 by using the contoured pressing block 521 .

[0053] In the figure, the contoured pressing block 521 is shown as an inverted trapezoidal structure, and its contoured surface is shown as a plane adapted to the outer side of the special-shaped part 2.

[0054] As one solution, the contoured pressing block 521 can be fixedly connected to the pressing plate 52 by integral molding or welding.

[0055] As a parallel solution, the contoured pressing block 521 can be connected to the pressing plate 52 by at least two bolts. Specifically, at least two bolts are arranged at intervals and pass through the pressing plate 52 at the same time, and the rod is threadedly connected to the contoured pressing block 521. In this way, the distance between the contoured pressing block 521 and the pressing plate 52 can be changed by the length of the bolts threadedly connected to the contoured pressing block 521, so as to achieve the compression of the special-shaped part 2.

[0056] Example 4

[0057] like Figure 1 and Figure 2 On the basis of embodiments 1-3, the rotating seat 51 includes a fixed rod 511 with one end detachably connected to the base 3 and a rotating shaft 512 rotatably connected to the other end of the fixed rod 511, and one end of the clamping plate 52 is rotatably connected to the rotating shaft 512.

[0058] The beneficial effect of adopting the preferred solution in the above embodiment is that when the pressing plate 52 is rotated, the pressing plate 52 rotates with the rotating shaft 512 as the central axis.

[0059] One end of the fixing rod 511 can be detachably connected to the base 3 by means of bolts, so that the entire clamping assembly 5 can be replaced.

[0060] As a specific solution of the above embodiment, the middle end of the rotating shaft 512 is rotatably connected to the fixing rod 511 , so that one end of the pressing plate 52 is rotatably connected to both ends of the rotating shaft 512 at the same time.

[0061] Example 5

[0062] like Figure 1 , Figure 4 On the basis of embodiments 1-4, a positioning surface 31 for abutting against the side of the claw 11 of the chuck 1 is provided at one end of the base 3 .

[0063] The beneficial effect of adopting the preferred solution in the above embodiment is that when one end of the base 3 is extended into the chuck 1 to be clamped by multiple claws 11, the extension length of the base 3 can be positioned by the positioning surface 31 abutting against the side of the claw 11.

[0064] As a specific solution of the above embodiment, the base 3 is in the shape of a stepped shaft, and the small diameter end thereof is used to be clamped by the claws 11 of the chuck 1 .

[0065] Example 6

[0066] like Figure 2 and Figure 3 On the basis of embodiments 1-5, a mounting hole 32 is opened on the other end side of the base 3, and the contoured positioning block 4 is adapted to and detachably connected to the mounting hole 32.

[0067] The beneficial effect of adopting the preferred solution in the above embodiment is that the installation of the contoured positioning block 4 is achieved through the installation hole 32 .

[0068] As a specific solution of the above embodiment, the mounting hole 32 is a U-shaped hole for the profiling positioning block 4 with a “U”-shaped structure to be directly inserted into, so as to achieve a close fit between the profiling positioning block 4 and the base 3 .

[0069] Example 7

[0070] like Figure 2 and Figure 3 On the basis of embodiments 1-6, the other end of the base 3 for mounting the contoured positioning block 4 is provided with a limiting surface 33 for abutting against the special-shaped part 2.

[0071] The beneficial effect of adopting the preferred solution in the above embodiment is that the insertion length of the special-shaped part 2 inserted into the insertion hole 41 is limited by the limiting surface 33 .

[0072] As a specific solution of the above embodiment, the base 3 is an axially through structure with two open ends, and the inner diameter of the opening at the small diameter end is smaller than the size of the clamping hole 42, so that when the special-shaped part 2 is inserted, the end of the special-shaped part 2 can directly abut against the limiting surface 33 to achieve precise installation.

[0073] Example 8

[0074] like Figure 2 and Figure 3 On the basis of embodiments 1-7, the other end of the base 3 for mounting the contoured positioning block 4 is provided with a clamping table 34 , and the clamping assembly 5 is arranged on the clamping table 34 .

[0075] The beneficial effect of adopting the preferred solution in the above embodiment is that the pressing table surface 34 serves as the mounting surface of the pressing assembly 5 to ensure that the pressing assembly 5 can press the special-shaped part 2 smoothly.

[0076] As a specific solution of the above embodiment, the clamping table surface 34 is a plane and is provided with threaded holes to achieve threaded connection with the clamping bolts 53 .

[0077] Example 9

[0078] like Figure 2 and Figure 3 On the basis of embodiments 1-8, the other end of the base 3 for mounting the contour positioning block 4 is connected with at least two fastening screws 35 , the fastening screws 35 are evenly arranged, and the ends thereof are inserted into the contour positioning block 4 .

[0079] The beneficial effect of adopting the preferred solution in the above embodiment is that the fastening screw 35 is used to achieve the fastening installation of the contour positioning block 4.

[0080] As a specific solution of the above embodiment, the number of the fastening screws 35 can be two, three, four or five, etc. In the figure, three fastening screws 35 are shown, and they are respectively located on two side surfaces of the base 3 in the horizontal direction and the bottom surface of the base 3 .

[0081] The base 3 is provided with a socket connected to the mounting hole 32 for inserting the fastening screw 35 . The contoured positioning block 4 is provided with a threaded hole for threaded connection with the fastening screw 35 .

[0082] On the other hand, the utility model provides a lathe, which is described in detail below.

[0083] Example 10

[0084] like Figure 1 On the basis of embodiments 1-9, a lathe includes a special-shaped part fixture and a chuck 1. The chuck 1 is provided with at least three claws 11, and a base 3 of the special-shaped part fixture is clamped between the claws 11.

[0085] The beneficial effect of adopting the preferred scheme in the above embodiment is that it is convenient to use the special-shaped part fixture to clamp and fix the special-shaped part 2, the replaceable contour positioning block 4 and the replaceable clamping assembly 5 improve the stability and versatility during the processing of special-shaped parts, the base 3 has a positioning surface 31 to realize off-machine clamping, and it is also convenient to remove the special-shaped part 2 after processing, the operation steps are few, the operation is simple and quick, and the processing efficiency of the special-shaped part 2 is improved.

[0086] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0087] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0088] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0090] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0091] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A special-shaped parts fixture, characterized in that: The invention comprises a base (3) with one end for being clamped by a chuck (1), a contour positioning block (4) detachably connected to the other end of the base (3), and a clamping assembly (5) with one end rotatably connected to the base (3); the base (3) and the contour positioning block (4) are coaxial with the chuck (1); a plug hole (41) for inserting a special-shaped part (2) is provided on the outer side of the contour positioning block (4); a clamping hole (42) communicating with the plug hole (41) is provided on the side; the other end of the clamping assembly (5) is detachably connected to the base (3) and is horizontally placed at the opening of the clamping hole (42); the hole wall of the plug hole (41) and the side of the clamping assembly (5) facing each other are contoured surfaces adapted to the side of the special-shaped part (2).

2. According to claim 1, a special-shaped parts fixture is characterized in that: The clamping assembly (5) comprises a rotating seat (51) detachably connected to the base (3), a clamping plate (52) one end of which is rotatably connected to the rotating seat (51), and a clamping bolt (53) having a rod portion passing through the other end of the clamping plate (52), wherein the clamping plate (52) is horizontally placed at the opening of the clamping hole (42), and the rod portion of the clamping bolt (53) is threadedly connected to the base (3).

3. A special-shaped parts fixture according to claim 2, characterized in that: The middle end of the pressing plate (52) is connected to a contoured pressing block (521), and the sides of the contoured pressing block (521) and the hole wall of the insertion hole (41) facing each other are contoured surfaces adapted to the side of the special-shaped part (2).

4. A special-shaped parts fixture according to claim 2, characterized in that: The rotating seat (51) comprises a fixing rod (511) with one end detachably connected to the base (3) and a rotating shaft (512) rotatably connected to the other end of the fixing rod (511), and one end of the pressing plate (52) is rotatably connected to the rotating shaft (512).

5. A special-shaped parts fixture according to any one of claims 1 to 4, characterized in that: One end of the base (3) is provided with a positioning surface (31) for abutting against the side surface of the claw (11) of the chuck (1).

6. A special-shaped parts fixture according to any one of claims 1 to 4, characterized in that: The other end side of the base (3) is provided with a mounting hole (32), and the contoured positioning block (4) is adapted to and detachably connected to the mounting hole (32).

7. A special-shaped parts fixture according to claim 6, characterized in that: The other end of the base (3) for mounting the contoured positioning block (4) is provided with a limiting surface (33) for abutting against the special-shaped part (2).

8. A special-shaped parts fixture according to any one of claims 1 to 4, characterized in that: The other end of the base (3) for mounting the contoured positioning block (4) is provided with a pressing table (34), and the pressing assembly (5) is arranged on the pressing table (34).

9. A special-shaped parts fixture according to any one of claims 1 to 4, characterized in that: The other end of the base (3) for mounting the contour positioning block (4) is connected with at least two fastening screws (35), and the fastening screws (35) are evenly arranged, and the ends of the fastening screws are inserted into the contour positioning block (4).

10. A lathe, characterized in that: It comprises the special-shaped parts fixture as described in any one of claims 1-9.

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