A positioning and clamping device for a crankcase honing machine

Abstract

The utility model provides a positioning clamping device for crankcase honing machine. It relates to honing fixture technical field. The positioning clamping device for crankcase honing machine includes inverted U shape honing positioning platform, is equipped with the through hole on inverted U shape honing positioning platform, the both sides outer wall of inverted U shape honing positioning platform all are fixedly installed with telescopic cylinder, the output shaft of two telescopic cylinders all are fixedly installed with push folding plate, two push folding plates are fixedly installed with the socket of mutual close -end, two sockets all are equipped with dovetail groove, two dovetail grooves all slide and insert the dovetail block, two dovetail blocks are fixedly installed with the connecting boss in the side of mutual close. The utility model has the advantages of convenient and fast adjustment fixture position, makes it and the smooth surface of crankcase realize horizontal correspondence, and the clamping effect is better, and can quickly correspond the crankshaft hole and honing head up and down.

Description

Technical Field

[0001] This utility model relates to the field of honing fixture technology, specifically a positioning and clamping device for a crankcase honing machine. Background Technology

[0002] In the current crankcase machining process, in order to polish the inner wall of the crankshaft bore and improve the accuracy and surface quality of the bore, a honing machine is generally used. This honing machine is mainly used to polish the inner wall of the bore. It uses the rotation and reciprocating motion of the honing head in the bore, combined with the honing stone, to perform micro-cutting and grinding on the bore wall, thereby achieving the purpose of improving the accuracy and surface quality of the bore.

[0003] However, crankcases are usually irregularly shaped, and the positioning fixtures commonly used on honing machines are usually in a fixed position, making it difficult to correspond with the few smooth surfaces on the irregularly shaped crankcase. Consequently, reliable clamping and positioning cannot be achieved. Furthermore, after positioning, the crankshaft holes on the crankcase are difficult to align vertically with the honing head. It is also necessary to adjust the positioning of the entire positioning fixture on the X and Y axes after fixing the crankcase, which is quite inconvenient.

[0004] Therefore, it is necessary to provide a new positioning and clamping device for crankcase honing machines to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a convenient and quick adjustment of the clamp position so that it is horizontally aligned with the smooth surface of the crankcase, with good clamping effect, and can quickly align the crankshaft hole with the honing head for positioning and clamping in a crankcase honing machine.

[0006] To solve the above-mentioned technical problems, the positioning and clamping device for a crankcase honing machine provided by this utility model includes: an inverted U-shaped honing positioning table, a through hole provided on the inverted U-shaped honing positioning table, telescopic cylinders fixedly installed on both outer walls of the inverted U-shaped honing positioning table, push-pull plates fixedly installed on the output shafts of the two telescopic cylinders, and sockets fixedly installed on the ends of the two push-pull plates that are close to each other, each socket having a dovetail groove, and dovetail blocks slidably inserted into the two dovetail grooves, with the two dovetail blocks on the sides that are close to each other... Each of the two connecting bosses is fixedly installed with a connecting boss. Clamping plates are fixedly installed on the side of each connecting boss that is close to each other. Rodless cylinders are fixedly installed on the inner walls of both sides of the inverted U-shaped honing positioning table. Lifting levers are fixedly installed on the sliders of the two rodless cylinders. The top of the two lifting levers is fixedly installed with the same single-mouth frame. A bidirectional threaded rod is rotatably installed inside the single-mouth frame. Two transverse sliders are threaded on the bidirectional threaded rod. Correction rods are fixedly installed on the top of the two transverse sliders. The two correction rods are located directly below the through hole.

[0007] Preferably, support bars are fixedly installed on both outer walls of the inverted U-shaped honing positioning table, and the two support bars pass through the two push-up folding plates respectively and are slidably connected to the corresponding push-up folding plates.

[0008] Preferably, each of the two sockets has multiple interchangeable countersunk holes at its top, and each of the two connecting protrusions has a hollow bracket fixedly installed. Each of the two hollow brackets has a tightening bolt threaded onto its top, and each of the two tightening bolts has a linkage bar rotatably installed at its bottom. Each of the two linkage bars has a positioning plug fixedly installed at its bottom, and the bottom of each positioning plug is inserted into the corresponding interchangeable countersunk hole. The linkage bar is in contact with the inner wall of the hollow bracket.

[0009] Preferably, a servo motor is fixedly installed on one outer wall of the single-port enclosure, the output shaft of the servo motor is fixedly connected to one end of the bidirectional threaded rod, and two horizontal single bars are fixedly installed inside the single-port enclosure. The two horizontal single bars pass through the two horizontal sliders and are slidably connected to the two horizontal sliders.

[0010] Preferably, the bottom of the inverted U-shaped honing positioning table is fixedly mounted with two mounting sheet metals, each of which has two mounting holes.

[0011] Preferably, diagonal braces are fixedly installed on both outer walls of the inverted U-shaped honing positioning table, and the top ends of the two diagonal braces are respectively fixedly connected to the bottom of the two telescopic cylinders.

[0012] Compared with related technologies, the positioning and clamping device for crankcase honing machines provided by this utility model has the following advantages:

[0013] This invention uses two calibration rods to adjust the crankshaft hole on the crankcase to a position corresponding to the upper and lower parts of the honing head, thus quickly completing the calibration of the crankshaft hole. Furthermore, the longitudinally adjustable connecting boss allows for adjustment of the longitudinal position of the clamping plate, enabling it to be quickly aligned with the smooth surface of the crankcase, thus reliably clamping the crankcase. The longitudinal sliding adjustment method also makes this fixture suitable for grinding crankcases of various shapes. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the positioning and clamping device for a crankcase honing machine provided by this utility model;

[0015] Figure 2 This is a frontal planar structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the installation of the bidirectional threaded rod in this utility model;

[0017] Figure 4 This is an assembly diagram of the dovetail groove and dovetail block in this utility model;

[0018] Figure 5 This is a schematic diagram of the connection structure between the tightening bolt and the linkage bar in this utility model.

[0019] In the diagram: 1. Inverted U-shaped honing positioning table; 2. Through hole; 3. Telescopic cylinder; 4. Push-up folding plate; 5. Socket; 6. Dovetail groove; 7. Dovetail block; 8. Connecting boss; 9. Clamping plate; 10. Adjustable countersunk hole; 11. Hollow bracket; 12. Tightening bolt; 13. Linkage bar; 14. Positioning plug; 15. Rodless cylinder; 16. Lifting folding rod; 17. Single-port frame; 18. Two-way threaded rod; 19. Lateral slider; 20. Correction rod. Detailed Implementation

[0020] 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.

[0021] Please refer to the following: Figures 1-5This utility model provides a positioning and clamping device for a crankcase honing machine, comprising: an inverted U-shaped honing positioning table 1, on the bottom of which two mounting plates are fixedly installed, each with two mounting holes for installation on a honing machine grinding station; a through hole 2 coaxial with the honing head on the inverted U-shaped honing positioning table 1; and telescopic cylinders 3 fixedly installed on the outer walls of both sides of the inverted U-shaped honing positioning table 1, with each telescopic cylinder 3 having an output shaft... Two push-up folding plates 4 are fixedly installed. Each of the two push-up folding plates 4 has a socket 5 fixedly installed at one end close to the other. Each socket 5 has a dovetail groove 6, and a dovetail block 7 is slidably inserted into each dovetail groove 6. A connecting boss 8 is fixedly installed on one side of each dovetail block 7 close to the other, and a clamping piece 9 is fixedly installed on one side of each connecting boss 8 close to the other. Through the sliding insertion design between the dovetail block 7 and the dovetail groove 6, the longitudinal position of the clamping piece 9 is adjustable, allowing for quick alignment with the smooth surface of the crankcase. This achieves reliable clamping. The clamping plate 9 has a suitable length, allowing it to contact a small, smooth surface for clamping. Rodless cylinders 15 are fixedly installed on the inner walls of both sides of the inverted U-shaped honing positioning table 1. Lifting levers 16 are fixedly installed on the sliders of both rodless cylinders 15. A single-opening frame 17 is fixedly installed at the top of both lifting levers 16. The opening of the single-opening frame 17 faces upwards, and a bidirectional threaded rod 18 is rotatably installed inside the single-opening frame 17. A servo motor is fixedly installed on one side of the outer wall, and its output shaft is fixedly connected to one end of the bidirectional threaded rod 18. Two transverse sliders 19 are threaded on the bidirectional threaded rod 18. In order to provide guidance for the transverse linear motion of the transverse sliders 19, two transverse single bars are fixedly installed inside the single-port frame 17. The two transverse single bars pass through the two transverse sliders 19 and are slidably connected to the two transverse sliders 19. Correction rods 20 are fixedly installed on the top of the two transverse sliders 19. The two correction rods 20 are located directly below the through hole 2.

[0022] In the above method, in order to relieve the gravity on the output shaft of the telescopic cylinder 3, support bars are fixedly installed on both outer walls of the inverted U-shaped honing positioning table 1. The two support bars pass through the two push-up folding plates 4 respectively and are slidably connected to the corresponding push-up folding plates 4.

[0023] In this method, in order to position the adjusted connecting boss 8, multiple tightly connected interchangeable countersunk holes 10 are provided on the top of both sockets 5. Hollow brackets 11 are fixedly installed on both connecting bosses 8. Tightening bolts 12 are threaded on the top of both hollow brackets 11. Linkage bars 13 are rotatably installed on the bottom of both tightening bolts 12. Positioning plugs 14 are fixedly installed on the bottom of both linkage bars 13. The bottom of the two positioning plugs 14 are respectively inserted into the corresponding interchangeable countersunk holes 10. By using the insertion method of positioning plugs 14 and interchangeable countersunk holes 10, the connecting boss 8 is reliably positioned, and the linkage bars 13 are in contact with the inner wall of the hollow brackets 11 so that the linkage bars 13 will not rotate.

[0024] In this method, in order to provide good support for the telescopic cylinder 3, diagonal braces are fixedly installed on both outer walls of the inverted U-shaped honing positioning table 1, and the tops of the two diagonal braces are fixedly connected to the bottoms of the two telescopic cylinders 3 respectively.

[0025] The working principle of the positioning and clamping device for crankcase honing machine provided by this utility model is as follows:

[0026] When the crankcase needs to be positioned and clamped, first place the crankcase on the top of the inverted U-shaped honing positioning table 1, and make the crankshaft hole on it roughly correspond to the through hole 2 vertically. Then start the rodless cylinder 15, and the slider on it raises the single-port frame 17, so that the two correction rods 20 pass through the through hole 2 and the crankshaft hole on the crankcase. Then, start the servo motor in the forward direction, and its output shaft drives the bidirectional threaded rod 18 to rotate. The two transverse sliders 19 move away from each other. During the movement, the correction rods 20 gradually approach the inner wall of the crankshaft hole. When both correction rods 20 touch the inner wall of the crankshaft hole, turn off the servo motor. At this time, the crankshaft hole corresponds vertically to the honing head above it.

[0027] Next, visually observe the location of the few smooth surfaces in the crankcase, and then adjust the positions of the two clamping plates 9 according to the location. When adjusting, first adjust one of the clamping plates 9, and rotate the corresponding tightening bolt 12 in the opposite direction to make the linkage bar 13 lift up with the positioning plug 14, and finally bring the positioning plug 14 out of the corresponding replacement countersunk hole 10. Then, move the clamping plate 9 longitudinally. At this time, observe the positional relationship between the clamping plate 9 and the smooth surface on one side of the crankcase. When the two are horizontally aligned, slightly adjust the position of the clamping plate 9 so that the positioning plug 14 corresponds vertically with the closest or most suitable replacement countersunk hole 10. Then rotate the corresponding tightening bolt 12 in the forward direction to bring the corresponding positioning plug 14 into the replacement countersunk hole 10. Then adjust the position of the other clamping plate 9 in the same way.

[0028] After all adjustments are completed, activate the two telescopic cylinders 3. The output shafts of the two telescopic cylinders 3 extend and finally bring the two clamping plates 9 to contact the smooth surface of the crankcase, thereby achieving the purpose of clamping. Thus, the positioning and clamping of the crankcase is completed.

[0029] Furthermore, during the subsequent polishing process, after each polishing cycle, the inside of the single-port frame 17 can be blown clean by air gun to remove debris and coolant.

[0030] Compared with related technologies, the positioning and clamping device for crankcase honing machines provided by this utility model has the following advantages:

[0031] This invention uses two correction rods 20 to adjust the crankshaft hole on the crankcase to a position corresponding to the upper and lower positions of the honing head, thereby quickly completing the correction of the crankshaft hole. Furthermore, the longitudinally adjustable connecting boss 8 allows for adjustment of the longitudinal position of the clamping plate 9, enabling it to be quickly adjusted to align with the smooth surface of the crankcase, thus reliably clamping the crankcase. The longitudinal sliding adjustment method also makes this fixture suitable for grinding crankcases of various shapes.

Claims

1. A positioning and clamping device for a crankcase honing machine, comprising an inverted U-shaped honing positioning table, characterized in that, The inverted U-shaped honing positioning platform has a through hole. Telescopic cylinders are fixedly installed on both outer walls of the platform. Push-pull plates are fixedly installed on the output shafts of both telescopic cylinders. An socket is fixedly installed on the adjacent ends of the two push-pull plates. Dovetail grooves are formed on both sockets, and dovetail blocks are slidably inserted into each groove. Connecting bosses are fixedly installed on the adjacent sides of the two dovetail blocks, and clamping plates are fixedly installed on the adjacent sides of the two connecting bosses. Rodless cylinders are fixedly installed on both inner walls of the platform. Lifting rods are fixedly installed on the sliders of both rodless cylinders. A single-mouth frame is fixedly installed at the top of each lifting rod. A bidirectional threaded rod is rotatably installed within the single-mouth frame. Two transverse sliders are threaded onto the bidirectional threaded rod. Correction rods are fixedly installed at the top of each transverse slider, and these correction rods are located directly below the through hole.

2. The positioning and clamping device for a crankcase honing machine according to claim 1, characterized in that, Support bars are fixedly installed on both outer walls of the inverted U-shaped honing positioning table. The two support bars pass through the two push-up folding plates and are slidably connected to the corresponding push-up folding plates.

3. The positioning and clamping device for a crankcase honing machine according to claim 1, characterized in that, Both of the sockets have multiple interchangeable countersunk holes at their tops. Both of the connecting protrusions have hollow brackets fixedly installed on them. Both of the hollow brackets have tightening bolts threaded onto their tops. Both tightening bolts have linkage bars rotatably installed at their bottom ends. Both linkage bars have positioning plugs fixedly installed at their bottom ends. The bottom ends of the two positioning plugs are respectively inserted into the corresponding interchangeable countersunk holes. The linkage bars are in contact with the inner wall of the hollow brackets.

4. The positioning and clamping device for a crankcase honing machine according to claim 1, characterized in that, A servo motor is fixedly installed on one outer wall of the single-port enclosure. The output shaft of the servo motor is fixedly connected to one end of the bidirectional threaded rod. Two horizontal single bars are fixedly installed inside the single-port enclosure. The two horizontal single bars pass through the two horizontal sliders and are slidably connected to the two horizontal sliders.

5. The positioning and clamping device for a crankcase honing machine according to claim 1, characterized in that, Two mounting sheets are fixedly installed at the bottom of the inverted U-shaped honing positioning table, and each of the two mounting sheets has two mounting holes.

6. The positioning and clamping device for a crankcase honing machine according to claim 1, characterized in that, The inverted U-shaped honing positioning table has diagonal braces fixedly installed on both outer walls, and the tops of the two diagonal braces are fixedly connected to the bottoms of the two telescopic cylinders respectively.

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