Crankshaft pin clamping base for machining machine tool

Abstract

The utility model provides a crank pin clamping base of a processing machine tool, which relates to the technical field of crank pin processing and comprises a base, an electric turntable is arranged on one side of the upper surface of the base, a threaded chuck is rotatably mounted in the electric turntable through a first bearing, and a support component for supporting a crank pin is arranged on one side of the base. A worker places a crankshaft pin in the threaded chuck, then fixes the crankshaft pin through the threaded chuck and then rotates the hand wheel to drive the lead screw to rotate, the rotating lead screw drives the vertical plate to move along the transverse rod in a threaded screwing-in mode, and the crankshaft pin is fixed through the threaded chuck. And the supporting sleeve moves to one end of the crankshaft pin and is used for manufacturing the crankshaft pin, so that the crankshaft pin is prevented from being bent after being cut by a cutter.

Description

Technical Field

[0001] This utility model relates to the field of crankshaft pin processing technology, and more specifically, to a crankshaft pin clamping base for processing machine tools. Background Technology

[0002] A crankshaft pin clamping base is a specialized mechanical component used to fix and support crankshaft pins, primarily applied in engine assembly, crankshaft machining, and repair. An existing publication (CN219967221U) describes a crankshaft precision machining clamping device, comprising: a fixed plate, a clamping assembly, and a measuring assembly. The fixed plate is connected to a machine tool spindle. The clamping assembly includes a sliding member, a clamping member, and a locking member. The sliding member is slidably connected to the fixed plate along the radial direction of the machine tool spindle and is positioned on the side of the fixed plate opposite to the machine tool spindle. The clamping member is connected to the sliding member and clamps the crankshaft. The locking member is connected to the clamping member and abuts against the fixed plate to restrict the sliding of the clamping member relative to the fixed plate. The measuring assembly includes a first measuring body and a second measuring body. The first measuring body is connected to the fixed plate, and the second measuring body is positioned opposite the first measuring body and connected to the clamping member. A measuring gap is formed between the second measuring body and the first measuring body for measuring the deviation distance.

[0003] However, in the above structure, since only one end of the crankshaft pin is clamped by the clamping device during the machining of the crankshaft pin, the radial cutting force of the tool will cause the overhanging crankshaft pin to bend like a cantilever beam during machining, resulting in a decrease in the dimensional and shape accuracy after machining. Utility Model Content

[0004] The main purpose of this utility model is to provide a crankshaft pin clamping base for machining tools, which can effectively solve the problem in the background art where only one end of the crankshaft pin is clamped by the clamping device during crankshaft pin machining, causing the radial cutting force of the tool to bend the overhanging crankshaft pin like a cantilever beam during machining, resulting in a decrease in the dimensional and shape accuracy after machining.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A crankshaft pin clamping base for a processing machine tool includes a base, an electric rotary table is provided on one side of the upper surface of the base, and a threaded chuck is rotatably mounted in the electric rotary table via a first bearing.

[0007] A support component for supporting the crankshaft pin is provided on one side of the base.

[0008] Preferably, the support assembly includes two partitions, both of which are fixedly installed on one side of the base. A lead screw is rotatably installed between the two partitions. A vertical plate is threaded onto one side of the lead screw. An installation hole is opened through one side surface of the vertical plate. A support sleeve is rotatably installed in the installation hole through a second bearing.

[0009] One end of the lead screw passes through the corresponding partition and is fixedly fitted with a handwheel.

[0010] Preferably, a crossbar is fixedly installed between the two partitions, and the upright plate is slidably disposed on one side of the crossbar.

[0011] Preferably, connecting frames are fixedly installed on both sides of the lower surface of the upright plate, and rotating wheels are rotatably installed between the two inner walls of the connecting frames.

[0012] Preferably, the inner wall of the support sleeve is provided with a plurality of threaded rods through the thread, and a clamping block is rotatably installed at one end of each threaded rod.

[0013] Preferably, two positioning rods are fixedly installed on one side of each clamping block, and each positioning rod is slidably disposed through the inner wall of the support sleeve.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The worker places the crankshaft pin in the threaded chuck, then uses the threaded chuck to fix the crankshaft pin. Then the worker turns the handwheel to drive the lead screw to rotate. The rotating lead screw drives the vertical plate to move along the horizontal bar through the threaded advance. The support sleeve moves to one end of the crankshaft pin and forms the crankshaft pin to avoid bending after being cut by the tool. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a crankshaft pin clamping base for a machine tool according to the present invention;

[0017] Figure 2 This is a top view of the crankshaft pin clamping base for a machine tool according to the present invention.

[0018] Figure 3 This utility model relates to a crankshaft pin clamping base for machining tools. Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0019] Figure 4 This utility model relates to a crankshaft pin clamping base for machining tools. Figure 3 Enlarged schematic diagram of the structure at point A;

[0020] Figure 5 This utility model relates to a crankshaft pin clamping base for machining tools. Figure 3 Enlarged schematic diagram of the structure at point B.

[0021] In the diagram: 1. Base; 2. Electric turntable; 3. Threaded chuck; 4. Support assembly; 401. Partition plate; 402. Lead screw; 403. Vertical plate; 404. Mounting hole; 405. Support sleeve; 406. Handwheel; 5. Crossbar; 6. Connecting frame; 7. Rotating wheel; 701. Threaded rod; 8. Clamping block; 9. Positioning rod. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0023] like Figures 1-5 As shown, a crankshaft pin clamping base for a processing machine tool includes a base 1, an electric turntable 2 is provided on one side of the upper surface of the base 1, and a threaded chuck 3 is rotatably installed in the electric turntable 2 through a first bearing.

[0024] A support component 4 for supporting the crankshaft pin is provided on one side of the base 1.

[0025] Support assembly 4 includes two partitions 401, both of which are fixedly installed on one side of base 1. A lead screw 402 is rotatably installed between the two partitions 401. A vertical plate 403 is threaded on one side of the lead screw 402. A mounting hole 404 is opened through one side of the vertical plate 403. A support sleeve 405 is rotatably installed in the mounting hole 404 through a second bearing.

[0026] One end of the lead screw 402 passes through the corresponding partition 401 and is fixedly mounted with a handwheel 406.

[0027] A crossbar 5 is fixedly installed between the two partitions 401, and a vertical plate 403 is slidably mounted on one side of the crossbar 5.

[0028] The worker places the crankshaft pin in the threaded chuck 3, then uses the threaded chuck 3 to fix the crankshaft pin. The worker then turns the handwheel 406, which drives the lead screw 402 to rotate. The rotating lead screw 402 drives the vertical plate 403 to move along the horizontal bar 5 by screwing in the thread. The support sleeve 405 moves to one end of the crankshaft pin and forms the crankshaft pin to prevent it from bending after being cut by the tool.

[0029] In another embodiment of this utility model, connecting frames 6 are fixedly installed on both sides of the lower surface of the upright plate 403, and rotating wheels 7 are rotatably installed between the two sides of the inner wall of the two connecting frames 6.

[0030] By setting up the rotating wheel 7, the rotating wheel 7 can support the moving upright plate 403 and prevent the lead screw 402 from bending.

[0031] In another embodiment of this utility model, the inner wall of the support sleeve 405 is provided with a plurality of threaded rods 701 through threads, and a clamping block 8 is rotatably installed at one end of each threaded rod 701.

[0032] Two positioning rods 9 are fixedly installed on one side of each clamping block 8, and each positioning rod 9 is slidably disposed through the inner wall of the support sleeve 405.

[0033] The operator rotates the threaded rod 701, causing it to move the clamping block 8 along the positioning rod 9 by screwing it in, so that the clamping block 8 can clamp crankshaft pins of different specifications.

[0034] The working principle of a crankshaft pin clamping base for a machining tool:

[0035] In use, the operator places the crankshaft pin in the threaded chuck 3, then uses the threaded chuck 3 to fix the crankshaft pin. The operator then turns the handwheel 406, which drives the lead screw 402 to rotate. The rotating lead screw 402 drives the vertical plate 403 to move along the horizontal bar 5 by screwing in the thread. The support sleeve 405 moves to one end of the crankshaft pin and forms the crankshaft pin to prevent it from bending after being cut by the tool.

[0036] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A crankshaft pin clamping base for a machining tool, comprising a base (1), characterized in that: An electric turntable (2) is provided on one side of the upper surface of the base (1), and a threaded chuck (3) is rotatably installed in the electric turntable (2) through a first bearing; The base (1) is provided with a support component (4) on one side for supporting the crankshaft pin.

2. The crankshaft pin clamping base for a machining tool according to claim 1, characterized in that: The support assembly (4) includes two partitions (401), both of which are fixedly installed on one side of the base (1). A lead screw (402) is rotatably installed between the two partitions (401). A vertical plate (403) is threaded on one side of the lead screw (402). A mounting hole (404) is opened through one side of the vertical plate (403). A support sleeve (405) is rotatably installed in the mounting hole (404) through a second bearing. One end of the lead screw (402) passes through the corresponding partition (401) and is fixedly mounted with a handwheel (406).

3. The crankshaft pin clamping base for a machining tool according to claim 2, characterized in that: A crossbar (5) is fixedly installed between the two partitions (401), and the upright plate (403) is slidably disposed on one side of the crossbar (5).

4. The crankshaft pin clamping base for a machining tool according to claim 3, characterized in that: Connecting brackets (6) are fixedly installed on both sides of the lower surface of the upright plate (403), and rotating wheels (7) are rotatably installed between the two inner walls of the connecting brackets (6).

5. A crankshaft pin clamping base for a machining tool according to claim 4, characterized in that: The inner wall of the support sleeve (405) is provided with a plurality of threaded rods (701), and a clamping block (8) is rotatably installed at one end of each threaded rod (701).

6. The crankshaft pin clamping base for a machining tool according to claim 5, characterized in that: Two positioning rods (9) are fixedly installed on one side of each clamping block (8), and each positioning rod (9) is slidably disposed through the inner wall of the support sleeve (405).

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