Combined clamp for casting multi-cylinder precision crankshaft

Abstract

The utility model relates to the technical field of crankshaft casting machining, in particular to a combined clamp for multi-cylinder precision crankshaft casting, which comprises a machining table, a machining position is arranged on one side of the top end of the machining table, a bearing frame is slidably connected to the other side of the top end of the machining table, and a clamping mechanism is arranged on one side of the bearing frame. The clamping mechanism comprises a driving motor, the driving motor is embedded in one side of the outer wall of the bearing frame, the power output end of the driving motor is connected with a worm, and the driving motor, the worm, a worm gear, a driving rod, a bearing block and an abutting block are matched, so that the crankshaft can be supported to rotate; according to the crankshaft clamping device, the crankshaft can be kept rotating in the process of stably clamping the crankshaft by matching a sliding plate, a sleeve, an abutting rod, a telescopic spring, a supporting rod and a limiting hole, so that the situation that the crankshaft shakes or loosens in the machining process, errors occur in the machining process, and the quality of the crankshaft is poor is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft casting and processing, in particular to a combined clamp used for casting multi-cylinder precision crankshafts. Background Art

[0002] The multi-cylinder precision crankshaft is an important part of the engine. After the connecting rod is installed, it can convert the up and down (reciprocating) motion of the connecting rod into a circular (rotating) motion. Its material is made of carbon structural steel or ductile iron. The crankshaft casting processing mainly uses CNC lathes, CNC internal milling machines, CNC turning and broaching machines and other advanced equipment to perform CNC turning, internal milling, and turning-broaching on the main journal and connecting rod journal to effectively reduce the deformation of the crankshaft processing.

[0003] In the existing technology, during the processing of multi-cylinder precision crankshafts, the crankshafts are usually supported and clamped by a support frame, so that the crankshafts are located at the machining point and turned during the rotation process;

[0004] In the prior art, the crankshaft is supported by a bracket for processing. However, during use, the bracket support may cause the crankshaft to shake up and down due to force during processing, thereby affecting the accuracy of the processing and causing errors in the outer wall of the crankshaft. Summary of the invention

[0005] The purpose of the utility model is to provide a combined clamp for multi-cylinder precision crankshaft casting, which can stably clamp the crankshaft and keep it rotating to avoid shaking or loosening during the processing, which may cause errors in the processing and problems with the crankshaft quality, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined fixture for multi-cylinder precision crankshaft casting, comprising a processing table, a processing position is arranged on one side of the top of the processing table, and a bearing frame is slidably connected to the other side of the top of the processing table, and a clamping mechanism is arranged on one side of the bearing frame;

[0007] The clamping mechanism includes a driving motor, which is embedded in one side of the outer wall of the supporting frame, and a worm is connected to the power output end of the driving motor, and one end of the worm that penetrates into the supporting frame is connected to a worm wheel, and a driving rod passes through the inside of the worm wheel, and a supporting block is fixed to the end of the driving rod that passes through the worm wheel, a sliding plate is slidably connected to one side of the interior of the supporting frame, and a resistance block is embedded in the position of the sliding plate corresponding to the supporting block, a sleeve is embedded in the position of the interior of the supporting frame facing the sliding plate, and a resistance rod passes through the inside of the sleeve, and the resistance rod is located at one end of the sleeve and is connected to a telescopic spring.

[0008] Preferably, a sliding structure is formed between the sliding plate and the bearing frame, and the structure of the bearing frame is a U-shaped structure.

[0009] Preferably, support rods are fixed below the outer walls of the two axially opposite sides of the bearing frame, and limiting holes are formed at positions corresponding to the support rods inside the sliding plate.

[0010] Preferably, an adjusting mechanism is arranged on one side of the sliding plate. The adjusting mechanism includes a mounting shell. The mounting shell is fixed on one side of the inner sleeve of the bearing frame, and an electromagnet is embedded in the mounting shell. A permanent magnet block passes through the inner wall of the mounting shell.

[0011] Preferably, the adjusting mechanism further includes a passing-out block. The passing-out block passes through the inner bottom end of the bearing frame, and a damping spring is embedded at the bottom end of the passing-out block.

[0012] Preferably, the structure of the permanent magnet block is a T-shaped structure, and a sliding structure is formed between the permanent magnet block and the mounting shell.

[0013] Preferably, a rotating motor is embedded at the front end of the processing table, and a threaded rod is connected to the power output end of the rotating motor.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. Through the cooperation of the driving motor, worm, worm gear, driving rod, bearing block and abutting block, the crankshaft can be supported and rotated, and in cooperation with the sliding plate, sleeve, abutting rod, telescopic spring, support rod and limiting hole, the crankshaft can be stably clamped and rotated during the process to avoid shaking or loosening during the processing, resulting in errors during the processing and problems with the quality of the crankshaft.

[0016] 2. Through the cooperation of the mounting shell, electromagnet and permanent magnet block, the position of the sliding plate can be quickly adjusted, so as to quickly disassemble and assemble the crankshaft. Through the cooperation of the passing-out block and the damping spring, the sliding plate is positioned to avoid loosening and shaking of the sliding plate during the processing, which affects the machining accuracy of the crankshaft. In cooperation with the rotating motor and the threaded rod, the bearing frame can automatically enter the processing position for processing, avoiding manual assistance and reducing the labor intensity. Description of the Drawings

[0017] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1This is the overall structural view of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the worm of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the telescopic spring of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the permanent magnet block of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the damping spring of the utility model.

[0023] Description of reference numerals:

[0024] 1. Processing table; 2. Processing position; 3. Carrying frame; 4. Clamping mechanism; 401. Driving motor; 402. Worm; 403. Worm wheel; 404. Driving rod; 405. Carrying block; 406. Sliding plate; 407. Resistance block; 408. Sleeve; 409. Resistance rod; 410. Telescopic spring; 5. Support rod; 6. Limiting hole; 7. Adjusting mechanism; 701. Mounting shell; 702. Electromagnet; 703. Permanent magnet block; 704. Penetrating block; 705. Damping spring; 8. Rotating motor; 9. Threaded rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides a technical solution:

[0027] See also Figures 1 to 3A combined fixture for multi-cylinder precision crankshaft casting includes a processing table 1, a processing position 2 is arranged on one side of the top of the processing table 1, a carrier frame 3 is slidably connected to the other side of the top of the processing table 1, and a clamping mechanism 4 is arranged on one side of the carrier frame 3; the clamping mechanism 4 includes a driving motor 401, the driving motor 401 is embedded in one side of the outer wall of the carrier frame 3, a worm 402 is connected to the power output end of the driving motor 401, and a worm wheel 403 is connected to the end of the worm 402 that penetrates into the carrier frame 3, a driving rod 404 is passed through the inside of the worm wheel 403, and a bearing block 405 is fixed to the end of the driving rod 404 that penetrates the worm wheel 403, A sliding plate 406 is slidably connected to one side of the inner part of the support frame 3, and a resistance block 407 is embedded in the position of the sliding plate 406 corresponding to the support block 405, and a sleeve 408 is embedded in the position of the inner side of the support frame 3 facing the sliding plate 406. A resistance rod 409 is inserted into the sleeve 408, and the resistance rod 409 is located at one end of the sleeve 408 and is connected to a telescopic spring 410. A sliding structure is formed between the sliding plate 406 and the support frame 3. The structure of the support frame 3 is a U-shaped structure. Support rods 5 are fixed below the two axially opposite outer walls of the support frame 3, and a limiting hole 6 is provided in the sliding plate 406 at a position corresponding to the support rod 5.

[0028] By adopting the above technical scheme, first, the rotating bearings corresponding to the bearing block 405 rotatably connected to the bearing frame 3 and the resistance block 407 embedded in the sliding plate 406 are respectively inserted into the main journal and connecting rod journal of the crankshaft, and under the limitation of the sleeve 408, the telescopic spring 410 elastically pushes the resistance rod 409 to move the sliding plate 406, so as to clamp the crankshaft from both ends to avoid excessive shaking of the supporting positioning, and at the same time, multiple crankshafts can be clamped at the same time for simultaneous processing, and the driving motor 401 drives the worm 402 to rotate the worm wheel 403, and the driving rod 404 drives the bearing block 405 to rotate, so that the crankshaft can rotate during the turning and other processing processes, and can stably clamp and maintain rotation at the same time. During the sliding process, the sliding plate 406 slides along the support rod 5 through the limiting hole 6 to improve the stability of the sliding process.

[0029] Specifically, Figure 1 , Figure 4 and Figure 5 As shown, an adjusting mechanism 7 is provided on one side of the sliding plate 406, and the adjusting mechanism 7 includes a mounting shell 701, and the mounting shell 701 is fixed on one side of the internal sleeve 408 of the supporting frame 3, and an electromagnet 702 is embedded in the interior of the mounting shell 701, and a permanent magnet block 703 passes through the inner wall of the mounting shell 701, and the adjusting mechanism 7 also includes a protruding block 704, and the protruding block 704 passes through the inner bottom end of the supporting frame 3, and a damping spring 705 is embedded at the bottom end of the protruding block 704, and the structure of the permanent magnet block 703 is a T-shaped structure, and a sliding structure is formed between the permanent magnet block 703 and the mounting shell 701, and a rotating motor 8 is embedded in the front end of the processing table 1, and a threaded rod 9 is connected to the power output end of the rotating motor 8.

[0030] By adopting the above technical solution, the threaded rod 9 is driven to rotate by rotating the motor 8, so that the carrier 3 slides along the processing table 1 into the processing position 2, allowing the crankshaft to be processed in turn, and the electromagnet 702 in front of the mounting shell 701 magnetically absorbs the permanent magnet block 703 to generate magnetic force, driving the sliding plate 406 to reset, thereby facilitating the disassembly and assembly of the crankshaft. During the clamping process, the sliding plate 406 contacts the conical penetration block 704 to compress the damping spring 705. After sliding, the penetration block 704 is reset to limit the sliding plate 406 to avoid looseness during rotation or processing, which affects the rotation of the crankshaft and causes errors. When disassembling and assembling, it can contact and press the penetration block 704 to enter the carrier 3.

[0031] Working principle: First, insert the two ends of the crankshaft into the corresponding rotating bearings of the bearing block 405 and the resistance block 407 respectively. Multiple crankshafts can be arranged for simultaneous processing. The resistance rod 409 is pushed by the internal telescopic spring 410 of the sleeve 408, so that the sliding plate 406 clamps the crankshaft inside the bearing frame 3. The worm 402 is driven by the driving motor 401, and the worm wheel 403 drives the driving rod 404, so that the bearing block 405 drives the crankshaft to rotate stably during the clamping process, which is convenient for adjusting the position during processing. The support rod 5 and the limit hole 6 cooperate to allow the sliding plate 406 to clamp the crankshaft inside the bearing frame 3. The moving plate 406 slides stably, and the rotating motor 8 drives the threaded rod 9 to allow the carrier 3 to enter the processing position 2 along the processing table 1, and is processed by the internal CNC processing equipment. When the sliding plate 406 moves, it contacts the penetration block 704 and compresses the damping spring 705. After sliding, the damping spring 705 allows the penetration block 704 to reset and contact the sliding plate 406. When the crankshaft needs to be disassembled, the penetration block 704 is pressed and the electromagnet 702 is started at the same time to magnetically absorb the permanent magnet block 703 to slide along the mounting shell 701, thereby resetting the sliding plate 406 to facilitate the disassembly and assembly of the crankshaft.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A combined fixture for multi-cylinder precision crankshaft casting, comprising a processing table (1), characterized in that: One side of the top end of the processing table (1) is provided with a processing position (2), and a carrier (3) is slidably connected to the other side of the top end of the processing table (1). A clamping mechanism (4) is arranged on one side of the carrier (3). The clamping mechanism (4) includes a driving motor (401). The driving motor (401) is embedded on one side of the outer wall of the carrier (3). The power output end of the driving motor (401) is connected to a worm (402). One end of the worm (402) penetrating into the carrier (3) is connected to a worm gear (403). A driving rod (404) penetrates out of the interior of the worm gear (403). A carrier block (405) is fixed at one end of the driving rod (404) penetrating out of the worm gear (403). A sliding plate (406) is slidably connected to one side inside the carrier (3). A resisting block (407) is embedded at a position corresponding to the carrier block (405) inside the sliding plate (406). A sleeve (408) is embedded on one side surface inside the carrier (3) facing the sliding plate (406). A resisting rod (409) penetrates out of the interior of the sleeve (408). One end of the resisting rod (409) located inside the sleeve (408) is connected to a telescopic spring (410).

2. The combined fixture for multi-cylinder precision crankshaft casting according to claim 1, wherein: A sliding structure is formed between the sliding plate (406) and the carrier (3), and the structure of the carrier (3) is a U-shaped structure.

3. The combined fixture for multi-cylinder precision crankshaft casting according to claim 1, wherein: Support rods (5) are fixed to the lower portions of the two axially opposite outer walls of the carrier (3). Limiting holes (6) are formed at positions corresponding to the support rods (5) inside the sliding plate (406).

4. The combined fixture for multi-cylinder precision crankshaft casting according to claim 1, characterized in that: An adjusting mechanism (7) is arranged on one side of the sliding plate (406). The adjusting mechanism (7) includes a mounting shell (701). The mounting shell (701) is fixed to one side of the sleeve (408) inside the carrier (3). An electromagnet (702) is embedded inside the mounting shell (701). A permanent magnet block (703) penetrates out of the inner wall of the mounting shell (701).

5. The combined fixture for multi-cylinder precision crankshaft casting according to claim 4, characterized in that: The adjusting mechanism (7) further includes a penetrating block (704). The penetrating block (704) penetrates out of the bottom end inside the carrier (3). A damping spring (705) is embedded at the bottom end of the penetrating block (704).

6. The combined fixture for multi-cylinder precision crankshaft casting according to claim 4, characterized in that: The structure of the permanent magnet block (703) is a T-shaped structure, and a sliding structure is formed between the permanent magnet block (703) and the mounting shell (701).

7. The combined fixture for multi-cylinder precision crankshaft casting according to claim 1, characterized in that: A rotating motor (8) is embedded at the front end of the processing table (1). The power output end of the rotating motor (8) is connected to a threaded rod (9).

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