Inner support auxiliary tool for part machining

Abstract

The utility model discloses an inner support auxiliary tool for part processing, which comprises a positioning assembly, an inner support assembly and a screwing piece, the positioning assembly comprises a clamping part, the clamping part is arranged on a triangular chuck of a machine tool, the clamping part comprises a central shaft, a jacking disc is sleeved on the central shaft, the inner support assembly is sleeved on the central shaft, and the screwing piece is arranged on the inner support assembly. The inner supporting assembly is located on the side, away from the triangular chuck, of the jacking disc and used for supporting an inner hole of the workpiece, and the screwing piece is in threaded connection with the center shaft and movably connected with the inner supporting assembly. The inner supporting assembly and the screwing piece are fixedly installed through the arranged positioning assembly, the inner hole of the workpiece is supported through the arranged inner supporting assembly, the inner supporting assembly is pushed to be unfolded through the screwing piece, and therefore the inner hole of the workpiece is tightly supported through the inner supporting assembly, and the phenomenon that in the prior art, when the workpiece is clamped, indentations are generated on the surface of the workpiece is avoided; and in addition, supporting or loosening can be carried out according to the inner diameters of the workpieces, so that positioning of the workpieces with different inner diameters is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to machining auxiliary support technical field especially, a kind of inner support auxiliary tool for part processing. BACKGROUND

[0002] In the field of machining, lathe is widely used in the manufacturing process of various parts as a basic and key processing equipment. For the machining of many parts, accurate positioning to the lathe processing shaft is the primary link to ensure the machining precision and quality.

[0003] Traditional positioning fixture adopts rigid clamping mode, for example, common three-jaw chuck or four-jaw chuck, when clamping parts, the jaw is in direct contact with the surface of the part, and the clamping force is concentrated on the contact point of the jaw and the part. For some parts with high surface precision requirements and soft material, such as aluminum alloy and copper alloy parts, such concentrated clamping force is easy to cause indentation, scratch and other damage on the surface of the part, which seriously affects the appearance quality and dimensional accuracy of the part and increases the scrap rate.

[0004] In addition, when clamping the cylindrical structure parts, the traditional positioning fixture is not convenient to adjust according to the cylindrical parts with different inner diameter sizes when supporting the inside of the cylindrical parts with different inner diameter sizes.

[0005] Therefore, the utility model is proposed to solve the above technical problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing an inner support auxiliary tool for part processing to solve the technical problem that the positioning fixture in the prior art is not convenient to adjust according to the cylindrical parts with different inner diameter sizes.

[0007] The technical scheme of the utility model is as follows: an inner support auxiliary tool for part processing, comprising:

[0008] A positioning assembly, the positioning assembly comprises a clamping part, the clamping part is arranged on a triangular chuck of a machine tool, and the clamping part comprises a central shaft, a top tight disc is sleeved on the central shaft;

[0009] An inner support assembly, the inner support assembly is sleeved on the central shaft, the inner support assembly is located on the side of the top tight disc away from the triangular chuck, and the inner support assembly is used for supporting the inner hole of the workpiece;

[0010] A screwing part, the screwing part is sleeved on the central shaft, one end of the central shaft away from the triangular chuck has external threads, the screwing part is threadedly connected with the central shaft, and the screwing part is movably connected with the inner support assembly.

[0011] Further, the inner support assembly comprises a supporting cylinder sleeved on the central shaft;

[0012] The supporting cylinder is movably connected with the inner support assembly.

[0013] The outer end of the two connecting rods arranged axially on the support cylinder is hingedly connected with an inner support block;

[0014] An active collar is further sleeved on the central shaft, and the active collar is located on the side of the support cylinder away from the pressing disc; a plurality of active rods matched with the connecting rods are hingedly connected to the circumferential wall of the active collar; the outer end of the active rod is hingedly connected to the bottom of the inner support block; and the active collar is movably connected with the tightening member.

[0015] Further, a T-shaped circular rail is arranged on the side of the active collar close to the tightening member; a T-shaped connecting groove matched with the T-shaped circular rail is formed on the side of the tightening member close to the active collar; and the T-shaped circular rail is movably arranged in the T-shaped connecting groove.

[0016] Further, the tightening member is a locking nut.

[0017] Further, a rubber cushion is arranged on the outer surface of the inner support block.

[0018] Further, the locking part further comprises a locking bolt; a threaded hole is formed in the circumferential wall of the central shaft close to the triangular chuck; and the locking bolt is threadedly connected with the locking hole of the triangular chuck and the threaded hole.

[0019] Further, the radius of the pressing disc is greater than the height between the inner support block and the central shaft.

[0020] By adopting the above technical scheme, the utility model has the following beneficial effects:

[0021] 1. The positioning assembly is used for fixedly installing the inner support assembly and the tightening member, thereby realizing stable connection of the structure; the inner support assembly supports the inner hole of the workpiece; the tightening member plays a pushing role, so as to make the inner support assembly expand outward, and then tightly support the inner hole of the workpiece. Compared with the prior art, this design effectively avoids the problem of indentation on the surface of the workpiece when the workpiece is clamped, and significantly improves the surface quality of the workpiece.

[0022] 2. The inner support assembly can be flexibly adjusted in the state of being tightly supported or loosened according to the difference in the inner diameter of the workpiece. This feature endows the tool with excellent versatility, so that the tool can accurately complete positioning of workpieces with different inner diameters, greatly expands the application range of the tool, meets diversified machining requirements, and effectively improves the production efficiency and the flexibility of machining. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are part of the present application, serve to further understand the present application, and the schematic embodiments of the present application and the descriptions thereof serve to explain the present application but do not constitute improper limitations on the present application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings. In the drawings:

[0024] Figure 1 A structure schematic view of the inner support auxiliary tool for part machining provided by the present application;

[0025] Figure 2 A structure schematic view of the inner support auxiliary tool for part machining provided by the present application; Figure 1 A structure schematic view after removing the workpiece;

[0026] Figure 3 A structure schematic view of the inner support auxiliary tool for part machining provided by the present application; Figure 2 A structure schematic view after removing the triangular chuck;

[0027] Figure 4 A connection schematic view of the movable collar and the screwing piece of the inner support auxiliary tool for part machining provided by the present application.

[0028] The drawings show that the inner support auxiliary tool for part machining comprises a positioning assembly, an inner support assembly 6 and a screwing piece 7, the positioning assembly comprises a clamping part, the clamping part is arranged on a triangular chuck 1 of a machine tool, the clamping part comprises a center shaft 3, a jacking disc 5 is sleeved on the center shaft 3, the inner support assembly 6 is sleeved on the center shaft 3, the inner support assembly 6 is located on a side of the jacking disc 5 away from the triangular chuck 1, the inner support assembly 6 is used for supporting an inner hole of a workpiece 2, the screwing piece 7 is sleeved on the center shaft 3, an outer thread is arranged on an end of the center shaft 3 away from the triangular chuck 1, the screwing piece 7 is in threaded connection with the center shaft 3, and the screwing piece 7 is in movable connection with the inner support assembly 6.

[0029] It should be noted that the drawings and the written description are not intended to limit the concept scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] The specific embodiments of the present application are described in further detail in combination with the drawings.

[0031] Referring to Figures 1 to 4 The drawings show that the inner support auxiliary tool for part machining comprises a positioning assembly, an inner support assembly 6 and a screwing piece 7, the positioning assembly comprises a clamping part, the clamping part is arranged on a triangular chuck 1 of a machine tool, the clamping part comprises a center shaft 3, a jacking disc 5 is sleeved on the center shaft 3, the inner support assembly 6 is sleeved on the center shaft 3, the inner support assembly 6 is located on a side of the jacking disc 5 away from the triangular chuck 1, the inner support assembly 6 is used for supporting an inner hole of a workpiece 2, the screwing piece 7 is sleeved on the center shaft 3, an outer thread is arranged on an end of the center shaft 3 away from the triangular chuck 1, the screwing piece 7 is in threaded connection with the center shaft 3, and the screwing piece 7 is in movable connection with the inner support assembly 6.

[0032] In the above scheme, the positioning assembly is arranged to fix and install the inner supporting assembly 6 and the screwing part 7, the inner supporting assembly 6 is arranged to support the inner hole of the workpiece 2, and the screwing part 7 is arranged to push the inner supporting assembly 6 to expand, so that the inner supporting assembly 6 supports the inner hole of the workpiece 2, thereby avoiding the indentation on the surface of the workpiece 2 when the workpiece 2 is clamped in the prior art, and the inner supporting assembly 6 can be tightened or loosened according to the size of the inner diameter of the workpiece 2, thereby completing the positioning of the workpiece 2 with different inner diameters.

[0033] In some possible embodiments, referring to Figure 2 As shown in Figure 3 The inner supporting assembly 6 comprises a supporting cylinder 61 sleeved on the central shaft 3, the supporting cylinder 61 is circumferentially hinged with connecting rods 62 at both ends, the outer ends of the two connecting rods 62 arranged axially on the supporting cylinder 61 are hinged with an inner supporting block 63, and a movable sleeve ring 64 is sleeved on the central shaft 3, the movable sleeve ring 64 is located on the side of the supporting cylinder 61 away from the jacking disc 5, the peripheral wall of the movable sleeve ring 64 is hinged with a plurality of movable rods 65 matched with the connecting rods 62 in the circumferential direction, the outer ends of the movable rods 65 are hinged at the bottom of the inner supporting block 63, and the movable sleeve ring 64 is movably connected with the screwing part 7.

[0034] It should be noted that the supporting cylinder 61 and the jacking disc 5 are fixed by welding, the jacking disc 5 is welded with the central shaft 3, the thickness of the jacking disc 5 is 20-30 mm, so as to ensure that the jacking disc 5 will not be deformed when transmitting torque and bearing the machining force of the workpiece 2, the two connecting rods 62 arranged in the axial direction of the supporting cylinder 61 are parallel and inclined, the distance between the outer end of the connecting rod 62 and the jacking disc 5 is greater than the distance between the inner end of the connecting rod 62 and the jacking disc 5, the movable rod 65 is inclined, and the inclination direction of the movable rod 65 is opposite to that of the corresponding connecting rod 62.

[0035] In the above scheme, when the inner hole of the workpiece 2 is supported, the screwing part 7 is rotated to rotate into the side close to the jacking disc 5, so as to drive the movable sleeve ring 64 to slide to the side close to the jacking disc 5, the movable sleeve ring 64 slides through the movable rod 65 to lift the inner supporting block 63, thereby completing the support of the inner hole of the workpiece 2.

[0036] In some possible embodiments, referring to Figure 4 As shown in The side of the movable sleeve ring 64 close to the screwing part 7 is provided with a T-shaped circular rail 8, the side of the screwing part 7 close to the movable sleeve ring 64 is provided with a T-shaped connecting groove 9 matched with the T-shaped circular rail 8, and the T-shaped circular rail 8 is movably arranged in the T-shaped connecting groove 9.

[0037]

[0037] In the above scheme, by setting the T-shaped circular rail 8 on the side of the movable collar 64 close to the tightening member 7, and setting the T-shaped connecting groove 9 on the side of the tightening member 7 close to the movable collar 64, the tightening member 7 can rotate on the side of the movable collar 64, and when the tightening member 7 is rotated, no motion interference is generated to the sliding of the movable collar 64, and the tightening member 7 limits the movable collar 64.

[0038] In some possible embodiments, the tightening member 7 is a locking nut, and when the tightening member 7 is rotated, the tightening member 7 can be manually rotated by a wrench.

[0039] In some possible embodiments, the outer surface of the inner supporting block 63 is provided with a rubber cushion, and the surface of the rubber cushion has anti-skid lines, which can increase the friction between the inner hole of the workpiece 2 and effectively protect the inner hole of the workpiece 2. The upper surface of the inner supporting block 63 is arc-shaped, and when the inner supporting block 63 is supported to the maximum position, the end of the inner supporting block 63 close to the jacking disc 5 is not in contact with the jacking disc 5.

[0040] In some possible embodiments, referring to Figure 3 The positioning assembly provided by the embodiment of the present application further includes a locking portion including a locking bolt 4, and the central shaft 3 is provided with a threaded hole in the peripheral wall of the end close to the triangular chuck 1, and the locking bolt 4 is screwed into the locking hole of the triangular chuck 1 and the threaded hole.

[0041] In the above scheme, before clamping the central shaft 3, the threaded hole needs to be aligned with the locking hole, and after the central shaft 3 is clamped by the triangular chuck 1, the locking bolt 4 is inserted into the locking hole, and the lower end of the locking bolt 4 enters the threaded hole. The locking bolt 4 is rotated to make the lower end of the locking bolt 4 screw into the threaded hole, and the further positioning of the central shaft 3 is completed.

[0042] In some possible embodiments, referring to Figure 2 and Figure 3 The radius size of the jacking disc 5 is greater than the height size between the inner supporting block 63 and the central shaft 3, and after the workpiece 2 is supported, the end surface of the workpiece 2 is in abutment with the jacking disc 5, so that the workpiece 2 is prevented from being displaced due to force in the process of rotation, and the end surface of the workpiece 2 is prevented from colliding with the triangular chuck 1.

[0043] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as the modifications are within the protection scope of the utility model, they are protected by the patent law.

Claims

1. An inner support auxiliary tool for machining a part, characterized by, The utility model relates to a positioning assembly and a locking assembly, and a machine tool comprising the positioning assembly and the locking assembly. The positioning assembly comprises a clamping part arranged on a triangular chuck (1) of a machine tool, the clamping part comprising a central shaft (3) on which a top pressing disc (5) is sleeved. An inner support assembly (6) is sleeved on the central shaft (3) and located on the side of the top pressing disc (5) away from the triangular chuck (1), and the inner support assembly (6) is used for supporting an inner hole of a workpiece (2). A screwing part (7) is sleeved on the central shaft (3), the end of the central shaft (3) away from the triangular chuck (1) is externally threaded, the screwing part (7) is threadedly connected with the central shaft (3), and the screwing part (7) is movably connected with the inner support assembly (6).

2. The inside supporting jig for machining of a part according to claim 1, wherein The inner support assembly (6) comprises a support cylinder (61) sleeved on the central shaft (3). Both ends of the support cylinder (61) are circumferentially hinged with connecting rods (62). The outer ends of the two connecting rods (62) arranged axially on the support cylinder (61) are hinged with an inner support block (63). The central shaft (3) is further sleeved with a movable sleeve ring (64), the movable sleeve ring (64) is located on the side of the support cylinder (61) away from the top pressing disc (5), the peripheral wall of the movable sleeve ring (64) is circumferentially hinged with a plurality of movable rods (65) matched with the connecting rods (62), the outer ends of the movable rods (65) are hinged to the bottom of the inner support block (63), and the movable sleeve ring (64) is movably connected with the screwing part (7).

3. The inside supporting jig for machining of a part according to claim 2, characterized by The side of the movable sleeve ring (64) close to the screwing part (7) is provided with a T-shaped circular rail (8), the side of the screwing part (7) close to the movable sleeve ring (64) is provided with a T-shaped connecting groove (9) matched with the T-shaped circular rail (8), and the T-shaped circular rail (8) is movably arranged in the T-shaped connecting groove (9).

4. The inside supporting jig for machining of a part according to claim 3, characterized by The screwing part (7) is a locking nut.

5. The inside supporting jig for machining of a part according to claim 2, wherein The outer surface of the inner support block (63) is provided with a rubber cushion.

6. The inside supporting jig for machining of a part according to claim 2, wherein The locking assembly comprises a locking bolt (4), the peripheral wall of the end of the central shaft (3) close to the triangular chuck (1) is provided with a threaded hole, and the locking bolt (4) is threadedly connected with the threaded hole and a locking hole of the triangular chuck (1).

7. The inside supporting jig for machining of a part according to claim 5, wherein The radius of the top pressing disc (5) is greater than the height between the inner support block (63) and the central shaft (3).

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