Indexing equipment for accurately grinding crankshaft connecting rod neck

Abstract

The utility model relates to the technical field of grinding machine indexing equipment, in particular to indexing equipment for accurately grinding a crankshaft connecting rod neck, which automatically controls the rotation angle of a crankshaft and improves the indexing precision by arranging a power device and an indexing device, and automatically and laterally locks an indexing plate after indexing by arranging the indexing device to prevent the indexing plate from rotating. The indexing precision is improved; comprising a body; the machine further comprises a power device, a dividing device, a chuck, a movable chuck and a positioning device, the power device, the movable chuck and the positioning device are all installed on the machine body, the dividing device is installed on the power device, and the chuck is installed on the dividing device; the machine body provides support, the power device provides power for the dividing device and the chuck, the dividing device divides the chuck, the chuck and the movable chuck are matched to clamp a crankshaft, and the positioning device positions the crankshaft during clamping.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grinding machine indexing equipment, in particular to a kind of precision grinding crankshaft connecting rod journal indexing equipment. BACKGROUND

[0002] Crankshaft is a commonly used transmission parts, to improve the service life and mechanical efficiency of crankshaft, the connecting rod journal position of crankshaft needs to be precision ground during production, to ensure machining accuracy and processing efficiency during processing, indexing equipment needs to be used to adjust the position of crankshaft.

[0003] The existing indexing equipment, such as a kind of precision grinding crankshaft connecting rod journal indexing device of Chinese utility model patent for authorization announcement No.CN214869213U, is representative of one kind of prior art, which mainly includes adjusting screw, positioning pin and clamping body, adjusting screw and positioning pin cooperate to rotate the crankshaft, and the clamping body clamps the crankshaft.

[0004] However, the existing technical equipment still has the following problems when in use: the existing machine relies on manual control of the crankshaft rotation angle by workers, and the indexing accuracy is poor, and the existing machine needs to be locked by workers after indexing, which can easily make the indexing disc rotate, and the indexing accuracy is poor. INVENTION CONTENTS

[0005] To solve the above technical problems, the utility model provides a kind of precision grinding crankshaft connecting rod journal indexing equipment by setting power device and indexing device to automatically control the rotation angle of crankshaft, improve indexing accuracy, and indexing device is automatically locked laterally to prevent indexing disc from rotating, improve indexing accuracy.

[0006] The utility model discloses a kind of precision grinding crankshaft connecting rod journal indexing equipment, including body;Further including power device, indexing device, chuck, mobile chuck and positioning device, power device, mobile chuck and positioning device are all installed on body, indexing device is installed on power device, chuck is installed on indexing device;Body provides support, power device provides power to indexing device and chuck, indexing device indexes chuck, chuck and mobile chuck cooperate to clamp crankshaft, positioning device is positioned to crankshaft when clamping.

[0007] Preferably, the body includes a plurality of support seats, a bottom plate, a guide rail seat and two guide rails, the bottom plate is installed at the top end of the plurality of support seats, the guide rail seat is installed at the top end of the bottom plate, and the two guide rails are both installed at the top end of the guide rail seat;Provide support.

[0008] Preferably, the power device comprises a main shaft box, a main shaft and a mounting frame, the main shaft box is fixedly installed at the top end of the guide rail seat, the main shaft is rotatably installed at the front end of the main shaft box, the mounting frame is fixedly installed on the main shaft, and the mounting frame is provided with a mounting table and a through hole; the main shaft box provides power to drive the main shaft and the mounting frame to rotate, and the rotation of the main shaft and the mounting frame drives the indexing device and the chuck to rotate.

[0009] Preferably, the indexing device comprises an electromagnetic clutch, a speed reducer, a gear one, a gear two, an indexing disc, an air cylinder and a limiting block, the electromagnetic clutch is fixedly installed at the front end of the main shaft, the speed reducer is fixedly installed at the front end of the electromagnetic clutch, the gear one is rotatably installed at the front end of the speed reducer, the gear two is rotatably sleeved on the mounting table of the mounting frame, and the gear two and the gear one are meshed with each other, the indexing disc is fixedly installed at the front end of the gear two, the indexing disc is provided with two limiting grooves which are symmetric about the axis, the air cylinder is fixedly installed at the bottom end of the through hole of the mounting frame, the limiting block is slidably installed on the air cylinder, and the limiting block and the through hole of the mounting frame are in sliding fit, and the limiting block and the two limiting grooves of 25 are in sliding fit; the electromagnetic clutch is kept disconnected, the limiting block is located in the limiting groove, so that the gear two is driven by the mounting frame to rotate around the main shaft, thereby driving the chuck to hold the crankshaft to rotate around the main shaft, at this time, the crankshaft neck to be machined is coaxial with the main shaft, when indexing is needed, the air cylinder is opened, the air cylinder provides power to make the limiting block exit the limiting groove, then the electromagnetic clutch is connected, the speed reducer makes the gear one rotate at a slower speed than the main shaft, the gear one and the gear two cooperate to make the indexing disc rotate around the axis of the gear two, at the same time, the air cylinder is opened to make the limiting block press the surface of the indexing disc, when the limiting block slides into another limiting groove, the electromagnetic clutch is disconnected, at this time, the crankshaft has rotated by 180 degrees, and the indexing operation is completed.

[0010] Preferably, the chuck comprises a disc body one and three clamping jaws one, the disc body one is fixedly installed at the front end of the indexing disc, the front end of the disc body one is provided with three sliding grooves one and a placing groove one, and the three clamping jaws one are slidably installed in the three sliding grooves one respectively; the placing groove one facilitates placing the crankshaft into the interior of the disc body one from above, and facilitates the clamping jaws one to clamp the crankshaft.

[0011] Preferably, the moving chuck comprises a sliding block, a rotating frame, a disc body two and three clamping jaws two, the sliding block is slidably installed at the top end of the two guide rails, the rotating frame is rotatably installed at the rear end of the sliding block, the disc body two is rotatably installed at the rear end of the rotating frame, and the rear end of the disc body two is provided with three sliding grooves two and a placing groove two, and the three clamping jaws two are slidably installed in the three sliding grooves two respectively; the rotating frame allows the disc body two to rotate synchronously with the disc body one around the main shaft, and the placing groove two facilitates placing the crankshaft into the interior of the disc body two from above, and facilitates the clamping jaws two to clamp the crankshaft.

[0012] Preferably, the positioning device comprises two sets of fixed frame one, two fixed frame two, two sets of rotating shafts and two positioning blocks, the two sets of fixed frame one and the two positioning blocks are symmetrically installed at the top end of the bottom plate, the two fixed frame two are fixedly installed on the two sets of fixed frame one respectively, the two sets of rotating shafts are symmetrically and uniformly spaced and rotatably installed on the two fixed frame two respectively, and the top ends of the two sets of rotating shafts are provided with positioning grooves matched with the size of the crankshaft journal; after placing the crankshaft, the rotating shaft is manually rotated and lifted, the rotating shaft is kept fixed by the friction positioning block after being lifted, the rotating shaft is pressed after being lifted, the crankshaft is quickly positioned, the crankshaft is clamped and rotated after being positioned, and the rotating shaft is lowered to start machining the crankshaft.

[0013] Compared with the prior art, the utility model has the advantages that the rotation angle of the crankshaft can be automatically controlled, the index plate can be automatically locked laterally after indexing to prevent the index plate from rotating, and the indexing precision is high. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the axonometric structure schematic diagram of the utility model;

[0015] Figure 2 is the axonometric structure schematic diagram of the fuselage;

[0016] Figure 3 is the axonometric structure schematic diagram of the power device;

[0017] Figure 4 is the axonometric structure schematic diagram of the indexing device;

[0018] Figure 5 is the axonometric structure schematic diagram of the chuck;

[0019] Figure 6 is the axonometric structure schematic diagram of the movable chuck;

[0020] Figure 7 is the axonometric structure schematic diagram of the positioning device.

[0021] Markings in the drawings: 01, fuselage; 11, support seat; 12, bottom plate; 13, guide rail seat; 14, guide rail; 02, power device; 21, main shaft box; 22, main shaft; 23, mounting frame; 03, indexing device; 31, electromagnetic clutch; 32, speed reducer; 33, gear one; 34, gear two; 35, index plate; 36, air cylinder; 37, limit block; 04, chuck; 41, disc body one; 42, clamping jaw one; 05, movable chuck; 51, sliding block; 52, rotating frame; 53, disc body two; 54, clamping jaw two; 06, positioning device; 61, fixed frame one; 62, fixed frame two; 63, rotating shaft; 64, positioning block. DETAILED DESCRIPTION

[0022] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0023] Embodiment 1

[0024] As Figure 1 shown, including fuselage 01;Still including power device 02, indexing device 03, chuck 04, mobile chuck 05 and positioning device 06, power device 02, mobile chuck 05 and positioning device 06 are all installed on fuselage 01, indexing device 03 is installed on power device 02, chuck 04 is installed on indexing device 03;Fuselage 01 provides support, power device 02 provides power to indexing device 03 and chuck 04, indexing device 03 indexes chuck 04, chuck 04 and mobile chuck 05 cooperate to clamp crankshaft, positioning device 06 positions crankshaft when clamping;

[0025] As Figure 2 shown, the fuselage 01 includes a plurality of support seats 11, a bottom plate 12, a guide rail seat 13 and two guide rails 14, the bottom plate 12 is installed at the top end of the plurality of support seats 11, the guide rail seat 13 is installed at the top end of the bottom plate 12, and the two guide rails 14 are both installed at the top end of the guide rail seat 13;

[0026] As Figure 3 shown, the power device 02 includes a main shaft box 21, a main shaft 22 and a mounting bracket 23, the main shaft box 21 is fixedly installed at the top end of the guide rail seat 13, the main shaft 22 is rotatably installed at the front end of the main shaft box 21, and the mounting bracket 23 is fixedly installed on the main shaft 22, and the mounting bracket 23 is provided with a mounting table and a through hole;

[0027] As Figure 4 shown, the indexing device 03 includes an electromagnetic clutch 31, a speed reducer 32, a gear one 33, a gear two 34, an indexing disc 35, a cylinder 36 and a limiting block 37, the electromagnetic clutch 31 is fixedly installed at the front end of the main shaft 22, the speed reducer 32 is fixedly installed at the front end of the electromagnetic clutch 31, the gear one 33 is rotatably installed at the front end of the speed reducer 32, the gear two 34 is rotatably sleeved on the mounting table of the mounting bracket 23, and the gear two 34 and the gear one 33 are meshed with each other, the indexing disc 35 is fixedly installed at the front end of the gear two 34, the indexing disc 35 is provided with two limiting grooves that are symmetrical about the axis, the cylinder 36 is fixedly installed at the bottom end of the through hole of the mounting bracket 23, the limiting block 37 is slidably installed on the cylinder 36, and the limiting block 37 and the through hole of the mounting bracket 23 are slidably fitted, and the limiting block 37 and the two limiting grooves of 25 are all slidably fitted;

[0028] As Figure 5As shown, the chuck 04 includes a disc body one 41 and three clamping jaws one 42, the disc body one 41 is fixedly installed at the front end of the index disc 35, and the disc body one 41 is provided with three sliding grooves one and a placing groove one at the front end, and the three clamping jaws one 42 are respectively slidably installed in the three sliding grooves one;

[0029] As shown in the figure, Figure 6 As shown, the moving chuck 05 includes a sliding block 51, a rotating frame 52, a disc body two 53 and three clamping jaws two 54, the sliding block 51 is slidably installed at the top end of the two guide rails 14, the rotating frame 52 is rotatably installed at the rear end of the sliding block 51, the disc body two 53 is rotatably installed at the rear end of the rotating frame 52, and the disc body two 53 is coaxial with the disc body one 41, and the disc body two 53 is provided with three sliding grooves two and a placing groove two at the rear end, and the three clamping jaws two 54 are respectively slidably installed in the three sliding grooves two;

[0030] First, the crankshaft is placed in the disc body one 41 and the disc body two 53, the placing groove one facilitates placing the crankshaft into the disc body one 41 from above, the clamping jaw one 42 facilitates clamping the crankshaft, the placing groove two facilitates placing the crankshaft into the disc body two 53 from above, the clamping jaw two 54 facilitates clamping the crankshaft, the rotating frame 52 allows the disc body two 53 to rotate synchronously with the disc body one 41 around the main shaft 22, after clamping the crankshaft, the main shaft box 21 is opened, the main shaft box 21 provides power to drive the main shaft 22 and the mounting frame 23 to rotate, the main shaft 22 and the mounting frame 23 drive the electromagnetic clutch 31 and the gear two 34 to rotate, when the electromagnetic clutch 31 is kept disconnected, the limiting block 37 is located in the limiting groove, so that the gear two 34 is driven by the mounting frame 23 to rotate around the main shaft 22, thereby driving the disc body one 41 to rotate around the main shaft 22 with the clamped crankshaft, at this time, the crankshaft neck to be machined is coaxial with the main shaft 22, when indexing is needed, the air cylinder 36 is opened, the air cylinder 36 provides power to make the limiting block 37 exit the limiting groove, then the electromagnetic clutch 31 is connected, the speed reducer 32 makes the gear one 33 rotate at a slower speed than the main shaft 22, the gear one 33 and the gear two 34 cooperate to make the index disc 35 rotate around the axis of the gear two 34, at the same time, the air cylinder 36 is opened to make the limiting block 37 press tightly against the surface of the index disc 35, when the limiting block 37 slides into another limiting groove, the electromagnetic clutch 31 is disconnected, at this time, the crankshaft has rotated by 180 degrees, and the indexing operation is completed.

[0031] Example 2

[0032] Based on example 1, it further includes:

[0033] As shown in the figure, Figure 7As shown, the positioning device 06 includes two sets of fixed frame one 61, two fixed frame two 62, two sets of rotating shaft 63 and two positioning block 64, two sets of fixed frame one 61 and two positioning block 64 are symmetrically installed at the top of the bottom plate 12, two fixed frame two 62 are fixedly installed on two sets of fixed frame one 61 respectively, two sets of rotating shaft 63 are uniformly and symmetrically rotatably installed on two fixed frame two 62 respectively, and the top of two sets of rotating shaft 63 is provided with a positioning groove matched with the size of the crankshaft journal;

[0034] First, the crankshaft is placed in the disc body one 41 and the disc body two 53, the placing groove one facilitates the placement of the crankshaft into the disc body one 41 from the top, the clamp jaw one 42 facilitates the clamping of the crankshaft, the placing groove two facilitates the placement of the crankshaft into the disc body two 53 from the top, the clamp jaw two 54 facilitates the clamping of the crankshaft, and the rotating frame 52 allows the disc body two 53 to rotate synchronously with the disc body one 41 around the main shaft 22. After placing the crankshaft, the rotating shaft 63 is manually rotated and raised, and the rotating shaft 63 is kept fixed by friction positioning block 64 after being raised. After the rotating shaft 63 is raised, it presses the crankshaft for rapid positioning. After positioning, the crankshaft is clamped and rotated, and the rotating shaft 63 is lowered to start processing the crankshaft. After clamping the crankshaft, open the main shaft box 21, which provides power to drive the main shaft 22 and mounting bracket 23 to rotate. The rotation of the main shaft 22 and the mounting bracket 23 drives the electromagnetic clutch 31 and the gear two 34 to rotate. When the electromagnetic clutch 31 is kept disconnected, the limiting block 37 is located in the limiting groove, so that the gear two 34 is driven by the mounting bracket 23 to rotate around the main shaft 22, thereby driving the disc body one 41 to clamp the crankshaft and rotate around the main shaft 22. At this time, the crankshaft journal to be processed is coaxial with the main shaft 22. When indexing is needed, open the air cylinder 36, which provides power to make the limiting block 37 exit the limiting groove, and then make the electromagnetic clutch 31 communicate. The speed reducer 32 makes the gear one 33 rotate at a slower speed than the main shaft 22. The gear one 33 and the gear two 34 cooperate to make the indexing disc 35 rotate around the axis of the gear two 34. At the same time, open the air cylinder 36 to make the limiting block 37 press the surface of the indexing disc 35. When the limiting block 37 slides into another limiting groove, the electromagnetic clutch 31 is disconnected. At this time, the crankshaft has turned 180 degrees, completing the indexing operation.

[0035] As Figures 1 to 7As shown, the fine grinding crankshaft connecting rod neck indexing equipment, when working, first places the crankshaft into the disc body one 41 and the disc body two 53, the placing groove one facilitates the placement of the crankshaft into the disc body one 41 from above, the clamping jaw one 42 facilitates the clamping of the crankshaft, the placing groove two facilitates the placement of the crankshaft into the disc body two 53 from above, the clamping jaw two 54 facilitates the clamping of the crankshaft, the rotating frame 52 allows the disc body two 53 to rotate synchronously around the main shaft 22 and the disc body one 41, after placing the crankshaft, manually rotating the raised rotating shaft 63, the rotating shaft 63 is kept fixed after being raised through the friction positioning block 64, the rotating shaft 63 is pressed after being raised, the crankshaft is quickly positioned, after positioning, the crankshaft is clamped and rotated, and the rotating shaft 63 is lowered to start processing the crankshaft, after clamping the crankshaft, the main shaft box 21 is opened, the main shaft box 21 provides power to drive the main shaft 22 and the mounting frame 23 to rotate, the main shaft 22 and the mounting frame 23 drive the electromagnetic clutch 31 and the gear two 34 to rotate, when the electromagnetic clutch 31 is kept disconnected, the limiting block 37 is located in the limiting groove, so that the gear two 34 is driven by the mounting frame 23 to rotate around the main shaft 22, so as to drive the disc body one 41 to rotate around the main shaft 22 while clamping the crankshaft, at this time, the crankshaft journal to be processed is coaxial with the main shaft 22, when indexing is needed, the air cylinder 36 is opened, the air cylinder 36 provides power to make the limiting block 37 exit the limiting groove, then the electromagnetic clutch 31 is connected, the speed reducer 32 makes the gear one 33 rotate at a slower speed than the main shaft 22, the gear one 33 and the gear two 34 cooperate to make the indexing disc 35 rotate around the gear two 34 shaft center, at the same time, the air cylinder 36 is opened to make the limiting block 37 press the surface of the indexing disc 35, when the limiting block 37 slides into another limiting groove, the electromagnetic clutch 31 is disconnected, at this time, the crankshaft has turned 180 degrees, and the indexing operation is completed.

[0036] The main shaft box 21, the electromagnetic clutch 31, the gear one 33, the gear two 34 and the air cylinder 36 are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, without the need for the technical personnel in the field to create labor.

[0037] The main function realized by the utility model is that the power device 02 and the indexing device 03 are arranged to automatically control the rotation angle of the crankshaft, improve the indexing accuracy, and the indexing device 03 is arranged to automatically lock the indexing disc laterally after indexing to prevent the indexing disc from rotating and improve the indexing accuracy.

[0038] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A precision grinding crankshaft journal indexing apparatus comprising a machine body (01); characterized in that, The power device (02), the indexing device (03), the chuck (04), the movable chuck (05) and the positioning device (06) are all installed on the fuselage (01), the indexing device (03) is installed on the power device (02), and the chuck (04) is installed on the indexing device (03); the fuselage (01) provides support, the power device (02) provides power to the indexing device (03) and the chuck (04), the indexing device (03) indexes the chuck (04), and the chuck (04) and the movable chuck (05) cooperate to clamp the crankshaft, and the positioning device (06) positions the crankshaft during clamping.

2. A precision ground crankshaft journal indexing apparatus as claimed in claim 1 wherein, The fuselage (01) comprises a plurality of support seats (11), a bottom plate (12), a guide rail seat (13) and two guide rails (14), the bottom plate (12) is installed at the top end of the plurality of support seats (11), the guide rail seat (13) is installed at the top end of the bottom plate (12), and the two guide rails (14) are both installed at the top end of the guide rail seat (13).

3. A precision ground crankshaft journal indexing apparatus as claimed in claim 2 wherein, The power device (02) comprises a main shaft box (21), a main shaft (22) and a mounting bracket (23), the main shaft box (21) is fixedly installed at the top end of the guide rail seat (13), the main shaft (22) is rotatably installed at the front end of the main shaft box (21), and the mounting bracket (23) is fixedly installed on the main shaft (22) and is provided with a mounting table and a through hole.

4. A precision ground crankshaft journal indexing apparatus as claimed in claim 3 wherein, The indexing device (03) comprises an electromagnetic clutch (31), a speed reducer (32), a gear one (33), a gear two (34), an indexing disc (35), a cylinder (36) and a limiting block (37), the electromagnetic clutch (31) is fixedly installed at the front end of the main shaft (22), the speed reducer (32) is fixedly installed at the front end of the electromagnetic clutch (31), the gear one (33) is rotatably installed at the front end of the speed reducer (32), the gear two (34) is rotatably sleeved on the mounting table of the mounting bracket (23), and the gear two (34) and the gear one (33) are in meshing engagement with each other, the indexing disc (35) is fixedly installed at the front end of the gear two (34), the indexing disc (35) is provided with two limiting grooves that are symmetric about the axis, the cylinder (36) is fixedly installed at the bottom end of the through hole of the mounting bracket (23), the limiting block (37) is slidably installed on the cylinder (36), and the limiting block (37) and the through hole of the mounting bracket (23) are in sliding engagement, and the limiting block (37) and the two limiting grooves are in sliding engagement.

5. A precision ground crankshaft journal indexing apparatus as claimed in claim 4 wherein, The chuck (04) comprises a disc body one (41) and three clamping jaws one (42), the disc body one (41) is fixedly installed at the front end of the indexing disc (35), the front end of the disc body one (41) is provided with three sliding grooves one and a placing groove one, and the three clamping jaws one (42) are slidably installed in the three sliding grooves one, respectively.

6. A precision grinding crankshaft journal indexing apparatus as claimed in claim 5 wherein, The mobile chuck (05) comprises a sliding block (51), a rotating frame (52), a disc body two (53) and three clamping jaws two (54), the sliding block (51) is slidingly installed at the top end of the two guide rails (14), the rotating frame (52) is rotatably installed at the rear end of the sliding block (51), the disc body two (53) is rotatably installed at the rear end of the rotating frame (52), and the rear end of the disc body two (53) and the disc body one (41) coaxial disc body two (53) is provided with three sliding grooves two and a placing groove two, and the three clamping jaws two (54) are slidingly installed in the three sliding grooves two respectively.

7. A precision ground crankshaft journal indexing apparatus as claimed in claim 2 wherein, The positioning device (06) comprises two groups of fixed frames one (61), two fixed frames two (62), two groups of rotating shafts (63) and two positioning blocks (64), the two groups of fixed frames one (61) and the two positioning blocks (64) are symmetrically installed at the top end of the bottom plate (12), the two fixed frames two (62) are fixedly installed on the two groups of fixed frames one (61) respectively, the two groups of rotating shafts (63) are uniformly and symmetrically rotatably installed on the two fixed frames two (62) respectively, and the top ends of the two groups of rotating shafts (63) are provided with positioning grooves matched with the sizes of the crankshaft necks.

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