Crankshaft gapless machining tool

Abstract

The utility model relates to the technical field of crankshaft machining tools, and discloses a crankshaft gapless machining tool which comprises a crankshaft, a key groove is formed in the left end of the crankshaft, and a clamping mechanism is arranged outside the crankshaft. The clamping mechanism comprises a U-shaped bottom plate, a first clamping module and a second clamping module, a detachable filling block is arranged to be used for filling gaps between the end of the lower crankshaft and the lower clamping plate and between the end of the lower crankshaft and the upper clamping plate, so that the lower clamping plate and the upper clamping plate clamp the crankshaft more stably, a push plate is pushed to move through an air cylinder, and therefore the crankshaft can be clamped more stably. The push plate drives the filling block to move, or the push plate pushes the upper clamping plate and the lower clamping plate to move, the lower clamping plate and the upper clamping plate are pressed on the crankshaft to fix the crankshaft, and a straight key structure is arranged on the lower clamping plate in the first clamping module and used for being clamped into a key groove to fix the crankshaft; the crankshaft is prevented from rotating relative to the first clamping module and the second clamping module, and the stability of the crankshaft during grinding is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft processing tooling, in particular to a crankshaft gapless processing tooling. Background Art

[0002] The double crankshafts in the loom are connected by synchronous shafts for operation. In order to ensure smooth operation, improve the service life of each component and produce high-end fabrics, the crankshaft processing must have high precision. At present, when processing the crankshaft, the crankshaft is generally fine-machined first, and then the keyway of the crank is milled directly on the template. During processing, in order to reduce the deviation of the crankshaft when it is put into operation, the center of the keyway is required to be in line with the highest point of the crank, but the current processing technology is difficult to meet the design requirements of the crankshaft;

[0003] The existing Chinese patent CN216759478U discloses a crankshaft gapless processing tool, which fixes the two ends of the crankshaft through a first gapless sleeve and a second gapless sleeve, and then spins the first clamping template and the second clamping template from both sides through a first eccentric template and a second eccentric template to achieve fixed positioning of the crankshaft;

[0004] Crankshafts of different specifications have different end sizes during design, and the above-mentioned crankshaft gapless processing tooling uses a first gapless sleeve and a second gapless sleeve of fixed specifications to fix the two ends of the crankshaft. Its adaptability is small and can only be used for crankshafts of one specification. Utility Model Content

[0005] The purpose of the utility model is to provide a crankshaft gapless processing tool to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crankshaft gapless processing tool, comprising a crankshaft, a keyway is provided at the left end of the crankshaft, and a clamping mechanism is provided on the outside of the crankshaft;

[0007] The clamping mechanism includes a U-shaped bottom plate, a clamping module 1 and a clamping module 2. The clamping module 1 is clamped at the left end of the crankshaft, and the clamping module 2 is clamped at the right end of the crankshaft. The outer walls of the clamping module 1 and the clamping module 2 are both provided with a slide groove. The inner parts of the clamping module 1 and the clamping module 2 are slidably provided with an upper clamping plate and a lower clamping plate. The outer walls of the upper clamping plate and the lower clamping plate are fixedly installed with a slide plate. The slide plate is slidably provided in the slide groove. The inner wall of the slide plate is threadedly connected with a bidirectional thread. Rod, the top end of the bidirectional screw rod passes through the top of the slide groove through the bearing, the inner walls of the clamping module 1 and the clamping module 2 are slidably provided with a push plate, and the outer wall of the push plate on the side away from the upper clamping plate and the lower clamping plate is fixedly installed with a cylinder, and the end of the cylinder away from the cylinder is fixedly connected to the outer wall of the U-shaped bottom plate, and the outer wall of the push plate is fixedly installed with a filling block by screws, and the filling block extends between the lower clamping plate and the upper clamping plate, and a straight key structure is provided inside the lower clamping plate located in the clamping module 1.

[0008] Furthermore, the straight key structure includes a through slot, which is opened on the top of the lower clamping plate, a sliding rod is fixedly installed on the inner wall of the through slot, a movable plate is slidably sleeved on the outer wall of the sliding rod, a triangular protrusion is fixedly installed on the outer wall of the movable plate, a push rod is slidably provided on the inner wall of the through slot, and the end of the push rod is in contact with the outer wall of the triangular protrusion.

[0009] Furthermore, a guide rail is fixedly installed on the inner outer wall of the U-shaped bottom plate, and the clamping module 1 and the clamping module 2 are slidably arranged on the guide rail.

[0010] Furthermore, the filling block is formed by splicing a plurality of curved surface blocks of different specifications, and a plurality of threaded holes are correspondingly provided on the outer wall of the push plate.

[0011] Furthermore, the length of the push rod is greater than the inner diameter of the through slot, two movable plates are provided, and are symmetrically distributed front and back about the center of the through slot, and the positions of the triangular protrusions on the two movable plates are different.

[0012] Furthermore, the outer wall sliding sleeve of the sliding rod is provided with a straight plate, the straight plate is located between the two movable plates, the upper surface of the straight plate is flush with the upper surface of the movable plate, and the wide width of the straight plate is the same as the width of the push rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. A detachable filling block is provided to fill the gap between the end of the lower crankshaft and the lower clamping plate and the upper clamping plate, so that the lower clamping plate and the upper clamping plate can clamp the crankshaft more stably. The push plate is pushed by the cylinder to move, and then the push plate drives the filling block to move, or the push plate drives the upper clamping plate and the lower clamping plate to move, and the lower clamping plate and the upper clamping plate are pressed on the crankshaft to fix the crankshaft. A straight key structure is provided on the lower clamping plate in the clamping module 1 to be inserted into the keyway to fix the crankshaft, so as to prevent the crankshaft from rotating relative to the clamping module 1 and the clamping module 2, and ensure the stability of the crankshaft during grinding;

[0015] 2. The push plate pushes the push rod to move into the through slot, so that the push rod pushes the triangular protrusion on the movable plate, and then the movable plate moves until the front or back side of the movable plate contacts the inner wall of the key slot, thereby realizing the positioning of the key slot. Two movable plates are provided, and are symmetrically distributed front and back about the center of the through slot, and are respectively pressed on the front inner wall and the back inner wall of the key slot to position the key slot, thereby fixing the crankshaft. The positions of the triangular protrusions on the two movable plates are different, so that the distance between the two movable plates has a larger range of variation, thereby improving the use range of the straight key structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the crankshaft of the utility model;

[0018] Figure 3 It is a structural schematic diagram of a front cross-sectional view of a clamping module of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the push plate and the filling block of the utility model;

[0020] Figure 5 It is a schematic structural diagram of an exploded view of the straight key structure of the utility model.

[0021] In the figure: 1. crankshaft; 2. keyway; 3. clamping mechanism; 301. U-shaped bottom plate; 302. clamping module one; 303. clamping module two; 304. cylinder; 305. slideway; 306. push plate; 307. upper clamping plate; 308. lower clamping plate; 309. slide plate; 3010. bidirectional screw rod; 3011. filling block; 3012. straight key structure; 30121. through groove; 30122. slide rod; 30123. moving plate; 30124. triangular protrusion; 30125. push rod; 4. guide rail; 5. straight plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-Figure 5 The utility model provides a technical solution: a crankshaft gapless processing tool, comprising a crankshaft 1, a keyway 2 is provided at the left end of the crankshaft 1, and a clamping mechanism 3 is provided outside the crankshaft 1;

[0024] The clamping mechanism 3 includes a U-shaped bottom plate 301, a clamping module 1 302, and a clamping module 2 303. The clamping module 1 302 is clamped at the left end of the crankshaft 1, and the clamping module 2 303 is clamped at the right end of the crankshaft 1. The outer walls of the clamping modules 1 302 and 303 are both provided with a slide groove 305. The inner surfaces of the clamping modules 1 302 and 303 are provided with an upper clamping plate 307 and a lower clamping plate 308 for sliding movement. The outer walls of the upper clamping plates 307 and the lower clamping plates 308 are fixedly provided with a slide plate 309, which is slidably arranged in the slide groove 305. The inner wall of the slide plate 309 is threadedly connected with a bidirectional screw rod 3010. The top end of the bidirectional screw rod 3010 passes through the top of the slide groove 305 through a bearing. The clamping modules 1 302 and 302 are provided with a plurality of slide plates 307 and 308 for sliding movement. The inner wall of the U-shaped bottom plate 301 is provided with a push plate 306 for sliding movement. The outer wall of the push plate 306 away from the upper clamping plate 307 and the lower clamping plate 308 is fixedly installed with a cylinder 304. The end of the cylinder 304 away from the cylinder 304 is fixedly connected to the outer wall of the U-shaped bottom plate 301. The outer wall of the push plate 306 is fixedly installed with a filling block 3011 by screws. The filling block 3011 extends between the lower clamping plate 308 and the upper clamping plate 307. The lower clamping plate 308 located in the clamping module 1 302 is provided with a straight key structure 3012. By rotating the bidirectional screw rod 3010, the two slide plates 309 are moved toward each other, thereby driving the upper clamping plate 307 and the lower clamping plate 308 to move to clamp and fix the end of the crankshaft 1. A detachable filling block 3011 is provided for filling the lower clamping plate 308. The gap between the end of shaft 1 and the lower clamping plate 308 and the upper clamping plate 307 makes the lower clamping plate 308 and the upper clamping plate 307 clamp the crankshaft 1 more stably, and the push plate 306 is pushed by the cylinder 304 to move, and then the push plate 306 drives the filling block 3011 to move, or the push plate 306 pushes the upper clamping plate 307 and the lower clamping plate 308 to move, and the lower clamping plate 308 and the upper clamping plate 307 are pressed on the crankshaft 1 to fix the crankshaft 1, and a straight key structure 3012 is set on the lower clamping plate 308 in the clamping module 1 302 for being inserted into the keyway 2 to fix the crankshaft 1, so as to prevent the crankshaft 1 from rotating relative to the clamping module 1 302 and the clamping module 2 303, thereby ensuring the stability of the crankshaft 1 during grinding, and the straight key structure 3012 includes a through The through slot 30121 is provided at the top of the lower clamping plate 308, a slide bar 30122 is fixedly installed on the inner wall of the through slot 30121, a movable plate 30123 is slidably sleeved on the outer wall of the slide bar 30122, a triangular protrusion 30124 is fixedly installed on the outer wall of the movable plate 30123, a push rod 30125 is slidably provided on the inner wall of the through slot 30121, an end of the push rod 30125 contacts the outer wall of the triangular protrusion 30124, the push rod 30125 is pushed into the through slot 30121 by the push plate 306, so that the push rod 30125 pushes the triangular protrusion 30124 on the movable plate 30123, and then the movable plate 30123 moves until the front or back side of the movable plate 30123 contacts the inner wall of the key slot 2,To realize the positioning of the keyway 2, the length of the push rod 30125 is greater than the inner diameter length of the through slot 30121, so that when the crankshaft 1 is removed, the push rod 30125 can be manually pulled out of the through slot 30121. Two movable plates 30123 are provided, and are symmetrically distributed front and back about the center of the through slot 30121, respectively pressing on the front inner wall and the back inner wall of the keyway 2 to position the keyway 2, and then fix the crankshaft 1. The positions of the triangular protrusions 30124 on the two movable plates 30123 are different, so that the distance between the two movable plates 30123 has a larger range of variation, thereby improving the use range of the straight key structure 3012;

[0025] The inner and outer walls of the U-shaped bottom plate 301 are fixedly mounted with a guide rail 4, and the clamping module 1 302 and the clamping module 2 303 are slidably arranged on the guide rail 4. The guide rail 4 can improve the bearing capacity of the clamping module 1 302 and the clamping module 2 303, thereby reducing the radial force acting on the cylinder 304;

[0026] The filling block 3011 is formed by splicing a plurality of curved blocks of different specifications. The outer wall of the push plate 306 is correspondingly provided with a plurality of threaded holes. According to the specifications of the crankshaft 1, different curved blocks are selected to be spliced ​​into the filling block 3011 to fill the gap between the end of the crankshaft 1 and the upper clamping plate 307 and the lower clamping plate 308, so as to minimize the gap between the end of the crankshaft 1 and the upper clamping plate 307 and the lower clamping plate 308, thereby ensuring the clamping and fixing effect of the crankshaft 1.

[0027] The outer wall sliding sleeve of the sliding rod 30122 is provided with a straight plate 5, which is located between the two movable plates 30123. The upper surface of the straight plate 5 is flush with the upper surface of the movable plate 30123. The wide band of the straight plate 5 is the same as the width of the push rod 30125. The straight plate 5 with the same width as the push rod 30125 is provided to fill the gap between the two movable plates 30123, thereby increasing the filling effect of the straight key structure 3012 on the key slot 2.

[0028] Working principle: When in use, according to the specifications of the end of the crankshaft 1, select the corresponding curved surface block to splice into the filling block 3011, install the filling block 3011 on the push plate 306, insert the left end of the crankshaft 1 between the upper clamping plate 307 and the lower clamping plate 308 in the clamping module 1 302, so that the straight key structure 3012 extends into the key slot 2, and the cylinder 304 is turned on to push the push plate 306 to move in the direction of the crankshaft 1. The push plate 306 moves and contacts with the push rod 30125, so that the push rod 30125 pushes the triangular protrusion 30124, thereby making the two moving plates 30123 move away from each other. The two sliding plates 309 are moved toward each other, thereby driving the upper clamping plate 307 and the lower clamping plate 308 to move and fix the end of the crankshaft 1, and then the crankshaft 1 can be polished.

[0029] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A crankshaft clearance-free machining tool, comprising a crankshaft (1), characterized in that: A keyway (2) is provided at the left end of the crankshaft (1), and a clamping mechanism (3) is provided outside the crankshaft (1); The clamping mechanism (3) comprises a U-shaped bottom plate (301), a clamping module 1 (302), and a clamping module 2 (303); the clamping module 1 (302) is clamped at the left end of the crankshaft (1), and the clamping module 2 (303) is clamped at the right end of the crankshaft (1); the outer walls of the clamping module 1 (302) and the clamping module 2 (303) are both provided with a slide groove (305); the inner parts of the clamping module 1 (302) and the clamping module 2 (303) are slidably provided with an upper clamping plate (307) and a lower clamping plate (308); the outer walls of the upper clamping plate (307) and the lower clamping plate (308) are fixedly provided with a slide plate (309); the slide plate (309) is slidably provided in the slide groove (305); the inner wall of the slide plate (309) is threadedly connected with a bidirectional screw rod (3010) ), the top end of the bidirectional screw rod (3010) passes through the top of the slide groove (305) through a bearing, and the inner walls of the clamping module 1 (302) and the clamping module 2 (303) are slidably provided with a push plate (306), and the outer wall of the push plate (306) on one side away from the upper clamping plate (307) and the lower clamping plate (308) is fixedly installed with a cylinder (304), and the end of the cylinder (304) away from the cylinder (304) is fixedly connected to the outer wall of the U-shaped bottom plate (301), and the outer wall of the push plate (306) is fixedly installed with a filling block (3011) by screws, and the filling block (3011) extends between the lower clamping plate (308) and the upper clamping plate (307), and a straight key structure (3012) is arranged inside the lower clamping plate (308) located in the clamping module 1 (302).

2. A crankshaft gapless processing tool according to claim 1, characterized in that: The straight key structure (3012) includes a through slot (30121), which is opened at the top of the lower clamping plate (308); a sliding rod (30122) is fixedly installed on the inner wall of the through slot (30121); a movable plate (30123) is slidably sleeved on the outer wall of the sliding rod (30122); a triangular protrusion (30124) is fixedly installed on the outer wall of the movable plate (30123); a push rod (30125) is slidably arranged on the inner wall of the through slot (30121), and the end of the push rod (30125) contacts the outer wall of the triangular protrusion (30124).

3. The crankshaft gapless processing tool according to claim 1, characterized in that: A guide rail (4) is fixedly mounted on the inner and outer walls of the U-shaped bottom plate (301), and the clamping module 1 (302) and the clamping module 2 (303) are slidably arranged on the guide rail (4).

4. The crankshaft gapless processing tool according to claim 1, characterized in that: The filling block (3011) is formed by splicing a plurality of curved surface blocks of different specifications, and the outer wall of the push plate (306) is correspondingly provided with a plurality of threaded holes.

5. The crankshaft gapless processing tool according to claim 2, characterized in that: The length of the push rod (30125) is greater than the inner diameter of the through slot (30121). Two movable plates (30123) are provided and are symmetrically distributed front and back about the center of the through slot (30121). The positions of the triangular protrusions (30124) on the two movable plates (30123) are different.

6. A crankshaft gapless processing tool according to claim 2, characterized in that: The outer wall sliding sleeve of the sliding rod (30122) is provided with a straight plate (5), and the straight plate (5) is located between the two movable plates (30123). The upper surface of the straight plate (5) is flush with the upper surface of the movable plate (30123), and the wide band of the straight plate (5) is the same as the width of the push rod (30125).

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