A clamping and positioning device for crankshaft machining

Abstract

The utility model relates to the technical field of crankshaft processing, and disclose a kind of clamping and positioning device of crankshaft processing, including crankshaft main body, the bottom of the crankshaft main body is provided with base, the outside of the crankshaft main body is provided with clamping mechanism, the bottom of the clamping mechanism is provided with support mechanism, the clamping mechanism includes adjusting assembly and clamping assembly, the adjusting assembly is set in base top, the clamping assembly is set in the inside of adjusting assembly front and back two sides, the support mechanism includes support assembly, limit component and positioning component, the support assembly is set in the inside of adjusting assembly bottom.The clamping and positioning device of crankshaft processing, by the clamping mechanism being set, staff only needs to place the crankshaft main body in the top of placing rack after, rotate twist disc one again, the clamping plate can be controlled to move inwards, so that the clamping plate of front and back two sides is cooperated to complete the clamping and fixing of crankshaft main body, and it is convenient for staff to disassemble and assemble crankshaft main body, easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of crankshaft machining technology, specifically a clamping and positioning device for crankshaft machining. Background Technology

[0002] The crankshaft is the most important component in an engine. It bears the force transmitted from the connecting rod and converts it into torque, which is then output through the crankshaft to drive other accessories on the engine. The crankshaft is subjected to the combined effects of centrifugal force from the rotating mass, periodically changing gas inertial force, and reciprocating inertial force, resulting in bending and torsional loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the journal surfaces must be wear-resistant, operate evenly, and have good balance.

[0003] Existing crankshaft machining clamping and positioning devices have poor adaptability during use. The fixed support structure cannot match crankshafts of different sizes and models. When changing the machining object, the entire fixture must be replaced, increasing production costs and downtime. The positioning stability is insufficient, and there is a lack of dynamic adjustment support components. The crankshaft is prone to vibration during machining due to cutting forces, which leads to a decrease in the machining accuracy of the journal surface and may even cause safety hazards. Disassembly is inconvenient, as the clamping structure is mostly a fixed design. After the crankshaft is machined, the fixed parts must be loosened one by one, reducing production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a clamping and positioning device for crankshaft machining to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a clamping and positioning device for crankshaft machining, comprising a crankshaft body, a base disposed below the crankshaft body, a clamping mechanism disposed on the outer side of the crankshaft body, and a support mechanism disposed inside the bottom of the clamping mechanism.

[0006] The clamping mechanism includes an adjustment component and a clamping component. The adjustment component is located on the top of the base, and the clamping component is located on the front and rear sides of the adjustment component.

[0007] The support mechanism includes a support component, a limiting component, and a positioning component. The support component is disposed inside the bottom of the adjustment component, the limiting component is disposed on the front and rear sides of the support component, and the positioning component is disposed inside the limiting component.

[0008] Preferably, the adjustment assembly includes a placement frame, which is fixedly connected to the top of the base and sleeved on the outside of the crankshaft body. A fixing screw is fixedly connected to the front and rear sides of the placement frame, and a threaded rotating shaft is threadedly connected to the inner ring of the fixing screw. A torsion plate is fixedly connected to the outer side of the threaded rotating shaft.

[0009] Preferably, the clamping assembly includes a clamping plate, which is rotatably connected to the inner side of a threaded shaft. Telescopic slide rods are fixedly connected to the four corners of the outer side of the clamping plate. A slide cylinder is slidably connected to the outer ring of the telescopic slide rod. The slide cylinder is fixedly connected to the inner sides of the front and rear sides of the placement frame. A connecting plate is fixedly connected to the outer side of the telescopic slide rod.

[0010] Preferably, the support assembly includes a support block, which is slidably connected to the bottom of the placement frame. The top of the support block is in contact with the bottom of the crankshaft body. A movable slide rod is fixedly connected to the bottom of the support block. The movable slide rod is slidably connected to the front and rear sides of the placement frame. A guide rod is slidably connected to the movable slide rod. The guide rod is fixedly connected to the bottom of the placement frame.

[0011] Preferably, the limiting component includes a limiting plate, the limiting plate is fixedly connected to the limiting plate, the limiting plate is slidably connected to the front and rear sides of the placement frame, a fixing cylinder is fixedly connected to the outer side of the limiting plate, and a fixing screw cylinder is fixedly connected to the outer side of the fixing cylinder.

[0012] Preferably, the positioning component includes a second threaded shaft, which is threadedly connected to the inner ring of a second fixed cylinder. A second torsion disc is fixedly connected to the outer side of the second threaded shaft, and a sliding plate is fixedly connected to the inner side of the second threaded shaft. The sliding plate is slidably connected to the inner ring of the fixed cylinder, and a positioning block is fixedly connected to the inner side of the sliding plate. The positioning block is engaged within a limiting plate, and the inner side of the positioning block is in contact with the outer side of the placement frame.

[0013] Compared with the prior art, this utility model provides a clamping and positioning device for crankshaft machining, which has the following advantages:

[0014] 1. The clamping and positioning device for crankshaft processing, through the set clamping mechanism, allows the operator to simply place the crankshaft body inside the top of the placement frame and then rotate the torsion disc to control the clamping plates to move inward, so that the clamping plates on the front and rear sides cooperate to clamp and fix the crankshaft body, making it convenient for the operator to disassemble and assemble the crankshaft body. The operation is simple.

[0015] 2. The clamping and positioning device for crankshaft machining, through the set support mechanism, allows the operator to adjust the position of the support blocks on both sides according to different sizes and models of crankshaft bodies before fixing the crankshaft body. This allows the device to support different models of crankshaft bodies during use, facilitating the subsequent clamping and fixing of the crankshaft body by the clamping plate, and further increasing the stability of the crankshaft body after fixing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of the present utility model;

[0018] Figure 2 This is a side sectional view of the present invention;

[0019] Figure 3 This is a front sectional view of the present invention;

[0020] Figure 4 This is a schematic diagram of part of the clamping mechanism;

[0021] Figure 5 This is a schematic diagram of the supporting mechanism.

[0022] Figure 6 This is a sectional view of the supporting mechanism.

[0023] In the diagram: 1. Clamping mechanism; 11. Adjustment assembly; 1101. Placement frame; 1102. Fixed screw cylinder one; 1103. Threaded shaft one; 1104. Torque disc one; 12. Clamping assembly; 1201. Clamping plate; 1202. Telescopic slide rod; 1203. Slide cylinder; 1204. Connecting plate; 2. Support mechanism; 21. Support assembly; 2101. Support block; 2102. Moving slide rod; 2103. Guide rod; 22. Limiting assembly; 2201. Limiting plate; 2202. Fixed cylinder; 2203. Fixed screw cylinder two; 23. Positioning assembly; 2301. Threaded shaft two; 2302. Torque disc two; 2303. Slide plate; 2304. Positioning block; 3. Crankshaft body; 4. Base. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] This utility model provides a technical solution:

[0027] Example 1

[0028] Combination Figures 1 to 4 A clamping and positioning device for crankshaft machining includes a crankshaft body 3, a base 4 disposed below the crankshaft body 3, a clamping mechanism 1 disposed on the outside of the crankshaft body 3, and a support mechanism 2 disposed inside the bottom of the clamping mechanism 1.

[0029] The clamping mechanism 1 includes an adjustment component 11 and a clamping component 12. The adjustment component 11 is located on the top of the base 4, and the clamping component 12 is located on the front and rear sides of the adjustment component 11.

[0030] The adjustment assembly 11 includes a placement frame 1101, which is fixedly connected to the top of the base 4 and sleeved on the outside of the crankshaft body 3. A fixing screw cylinder 1102 is fixedly connected to the inner sides of the front and rear sides of the placement frame 1101. A threaded shaft 1103 is threadedly connected to the inner ring of the fixing screw cylinder 1102. A torsion plate 1104 is fixedly connected to the outer side of the threaded shaft 1103. The clamping assembly 12 includes a clamping plate 1201, which is rotatably connected to the inner side of the threaded shaft 1103. Telescopic slide rods 1202 are fixedly connected to the four corners of the outer side of the clamping plate 1201. A slide cylinder 1203 is slidably connected to the outer ring of the telescopic slide rod 1202. The slide cylinder 1203 is fixedly connected to the inner sides of the front and rear sides of the placement frame 1101. A connecting plate 1204 is fixedly connected to the outer side of the telescopic slide rod 1202.

[0031] Furthermore, the operator only needs to place the crankshaft body 3 on top of the placement frame 1101, and then rotate the torsion disc 1104 to control the clamping plate 1201 to move inward, so that the clamping plates 1201 on the front and rear sides cooperate to clamp and fix the crankshaft body 3, which makes it easy for the operator to disassemble and assemble the crankshaft body 3. The operation is simple.

[0032] Example 2

[0033] See Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6Furthermore, based on Embodiment 1, the support mechanism 2 includes a support component 21, a limiting component 22, and a positioning component 23. The support component 21 is disposed inside the bottom of the adjustment component 11, the limiting component 22 is disposed on the front and rear sides of the support component 21, and the positioning component 23 is disposed inside the limiting component 22.

[0034] Support assembly 21 includes a support block 2101, which is slidably connected to the bottom of the placement frame 1101. The top of the support block 2101 is in contact with the bottom of the crankshaft body 3. A movable slide rod 2102 is fixedly connected to the bottom of the support block 2101. The movable slide rod 2102 is slidably connected to the front and rear sides of the placement frame 1101. A guide rod 2103 is slidably connected to the movable slide rod 2102. The guide rod 2103 is fixedly connected to the bottom of the placement frame 1101. Limiting assembly 22 includes a limiting plate 2201, which is fixedly connected to the limiting plate 2201 and slidably connected to the front and rear sides of the placement frame 1101. A fixing cylinder 2202 is fixedly connected to the outside of plate 2201, and a fixing screw cylinder 2203 is fixedly connected to the outside of fixing cylinder 2202. The positioning component 23 includes a threaded shaft 2301, which is threadedly connected to the inner ring of the fixing screw cylinder 2203. A torsion disc 2302 is fixedly connected to the outside of threaded shaft 2301, and a sliding plate 2303 is fixedly connected to the inside of threaded shaft 2301. The sliding plate 2303 is slidably connected to the inner ring of fixing cylinder 2202. A positioning block 2304 is fixedly connected to the inside of sliding plate 2201. The positioning block 2304 is engaged in the limiting plate 2201, and the inside of the positioning block 2304 is in contact with the outside of the placement frame 1101.

[0035] Furthermore, before the crankshaft body 3 needs to be fixed, the staff can adjust the position of the support blocks 2101 on both sides according to the different sizes and models of the crankshaft body 3. This allows the device to support different models of crankshaft bodies 3 during use, making it easier for the clamping plate 1201 to clamp and fix the crankshaft body 3, further increasing the stability of the crankshaft body 3 after it is fixed.

[0036] In actual operation, when this device is used and it is necessary to fix the crankshaft body 3, the operator first places the crankshaft body 3 on top of the placement frame 1101. Then, the operator moves the crankshaft body 3 so that its two sides are parallel to the base 4. Next, the operator moves the support blocks 2101 on both sides up and down by turning the fixing cylinder 2202, so that the tops of the support blocks 2101 on both sides are in contact with the bottom of the crankshaft body 3. Then, the operator rotates the second torsion disc 2302, and the rotation of the second torsion disc 2302... The rotating threaded shaft 2301 rotates, and the rotating threaded shaft 2301 moves inward within the inner ring of the fixed screw cylinder 2203. The inward movement of the threaded shaft 2301 drives the positioning block 2304 to move inward through the sliding plate 2303. The positioning block 2304 moves inward and engages with the inner side of the limiting plate 2201 and the front and rear sides of the placement frame 1101. The friction generated by the contact between the positioning block 2304 and the placement frame 1101 completes the positioning of the support blocks 2101 on both sides, thus initially completing the support of the crankshaft body 3.

[0037] Then, the workers rotate the front and rear torsion plates 1104. The rotation of the torsion plates 1104 drives the threaded shaft 1103 to rotate. The threaded shaft 1103 rotates and moves inward within the inner ring of the fixed screw cylinder 1102. The inward movement of the threaded shaft 1103 drives the clamping plate 1201 to move inward. The inward movement of the clamping plates 1201 on both the front and rear sides completes the clamping and positioning of the crankshaft body 3. At this point, the clamping process of the crankshaft body 3 is completed, and subsequent processing operations can be carried out on the crankshaft body 3.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A clamping and positioning device for crankshaft machining, comprising a crankshaft body (3), characterized in that: A base (4) is provided below the crankshaft body (3), a clamping mechanism (1) is provided on the outside of the crankshaft body (3), and a support mechanism (2) is provided inside the bottom of the clamping mechanism (1). The clamping mechanism (1) includes an adjustment component (11) and a clamping component (12). The adjustment component (11) is disposed on the top of the base (4), and the clamping component (12) is disposed on the front and rear sides of the adjustment component (11). The support mechanism (2) includes a support component (21), a limiting component (22) and a positioning component (23). The support component (21) is located inside the bottom of the adjustment component (11). The limiting component (22) is located on the front and rear sides of the support component (21). The positioning component (23) is located inside the limiting component (22).

2. The clamping and positioning device for crankshaft machining according to claim 1, characterized in that: The adjustment assembly (11) includes a placement frame (1101), which is fixedly connected to the top of the base (4). The placement frame (1101) is sleeved on the outside of the crankshaft body (3). A fixing screw cylinder (1102) is fixedly connected to the front and rear sides of the placement frame (1101). A threaded rotating shaft (1103) is threadedly connected to the inner ring of the fixing screw cylinder (1102). A torsion disc (1104) is fixedly connected to the outside of the threaded rotating shaft (1103).

3. The clamping and positioning device for crankshaft machining according to claim 1, characterized in that: The clamping assembly (12) includes a clamping plate (1201), which is rotatably connected to the inner side of the threaded shaft (1103). The four corners of the outer side of the clamping plate (1201) are fixedly connected to telescopic slide rods (1202). The outer ring of the telescopic slide rod (1202) is slidably connected to a slide cylinder (1203). The slide cylinder (1203) is fixedly connected to the front and rear sides of the placement frame (1101). The outer side of the telescopic slide rod (1202) is fixedly connected to a connecting plate (1204).

4. The clamping and positioning device for crankshaft machining according to claim 1, characterized in that: The support assembly (21) includes a support block (2101), which is slidably connected to the bottom of the placement frame (1101). The top of the support block (2101) is in contact with the bottom of the crankshaft body (3). A movable slide rod (2102) is fixedly connected to the bottom of the support block (2101). The movable slide rod (2102) is slidably connected to the front and rear sides of the placement frame (1101). A guide rod (2103) is slidably connected to the movable slide rod (2102). The guide rod (2103) is fixedly connected to the bottom of the placement frame (1101).

5. The clamping and positioning device for crankshaft machining according to claim 1, characterized in that: The limiting component (22) includes a limiting plate (2201), the limiting plate (2201) is fixedly connected to the limiting plate (2201), the limiting plate (2201) is slidably connected to the front and rear sides of the placement rack (1101), a fixing cylinder (2202) is fixedly connected to the outside of the limiting plate (2201), and a fixing screw cylinder (2203) is fixedly connected to the outside of the fixing cylinder (2202).

6. The clamping and positioning device for crankshaft machining according to claim 1, characterized in that: The positioning component (23) includes a threaded shaft two (2301), which is threadedly connected to the inner ring of the fixed screw cylinder two (2203). A torsion disc two (2302) is fixedly connected to the outer side of the threaded shaft two (2301), and a sliding plate (2303) is fixedly connected to the inner side of the threaded shaft two (2301). The sliding plate (2303) is slidably connected to the inner ring of the fixed cylinder (2202).

7. The clamping and positioning device for crankshaft machining according to claim 6, characterized in that: A positioning block (2304) is fixedly connected to the inner side of the sliding plate (2303). The positioning block (2304) is snapped into the limiting plate (2201). The inner side of the positioning block (2304) is in contact with the outer side of the placement rack (1101).

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