Crankshaft connecting seat of lapping machine

Abstract

The utility model relates to the technical field of clamps, and discloses a crankshaft connecting seat of a lapping machine, which comprises an opposite electric lead screw module, a reciprocating electric lead screw module and an electric chuck, a sliding table of the opposite electric lead screw module is fixedly provided with a support frame, and the support frame is rotatably provided with the reciprocating electric lead screw module. A sliding table of the reciprocating electric lead screw module is fixedly provided with an electric chuck, one supporting frame is fixedly provided with a gear motor, the output end of the gear motor and the reciprocating electric lead screw module are fixedly assembled, a clamping jaw of the electric chuck is fixedly provided with one end of a linkage seat, and the other end of the linkage seat is connected with a clamping jaw assembly through a pressure detection piece. Arc-shaped pressing blocks matched with different crankshafts can be replaced through the clamping jaw assembly, and the use range is wide; a plurality of arc-shaped pressing blocks can clamp the end part of the crankshaft in a surface contact manner, so that indentations are prevented from being generated on the surface of the end part, and the convenience of subsequent assembly can be improved; and the pressure detection piece can ensure that the pressing force of the end part is moderate.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a crankshaft connecting seat of a lapping machine. Background Art

[0002] The engine crankshaft mainly includes the crank, front end shaft, rear end shaft, main journal, connecting rod journal, balance weight and other structures. The surface roughness requirements of the main journal and connecting rod journal are relatively high, and they need to be processed again by a lapping machine after machining to meet the mechanical and physical properties and meet the use requirements.

[0003] During precision grinding, two electric chuck objects are usually moved by opposing electric screw modules to clamp the front and rear shafts of the crankshaft. The rotating electric chuck can drive the crank to rotate, and cooperate with the rotating grinding disc to perform precision machining on the journal. Although different types of crankshafts can be clamped, directly clamping the crankshaft end with the electric chuck jaws is a hard contact method with a small contact area, and the clamping force is difficult to control, which can easily leave indentations on the end surface and affect the subsequent installation of the sprocket and flange.

[0004] Therefore, in order to solve the above problems, a crankshaft coupling seat of a lapping machine is proposed. Utility Model Content

[0005] The utility model aims to provide a crankshaft connecting seat of a lapping machine, which is more flexible in clamping and does not leave indentations, thereby solving the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The crankshaft connecting seat of the lapping machine comprises an opposing electric lead screw module, a reciprocating electric lead screw module and an electric chuck, the slide table of the opposing electric lead screw module is fixedly mounted with a support frame, the support frame is rotatably mounted with the reciprocating electric lead screw module, the slide table of the reciprocating electric lead screw module is fixedly mounted with the electric chuck, one of the support frames is fixedly mounted with a reduction motor, the output end of the reduction motor is fixedly assembled with the reciprocating electric lead screw module, the claw of the electric chuck is fixedly mounted with one end of the linkage seat, and the other end of the linkage seat is connected with a clamping assembly through a pressure detection part; the clamping jaw assembly comprises a casing and a servo motor, a turntable is rotatably mounted on the side of the casing close to the center of the electric chuck through a bearing, an arc-shaped pressure block is fixedly mounted on the side of the turntable close to the center of the electric chuck, a servo motor is fixedly mounted inside the casing, and the output end of the servo motor is fixedly assembled with the turntable.

[0008] Furthermore, there are 2 to 4 arc-shaped pressing blocks on each of the rotating disks that are evenly distributed around the circumference.

[0009] Furthermore, a cushion layer is fixedly installed on one side of the arc-shaped pressing block close to the center of the electric chuck.

[0010] Specifically, the pressure detection component includes a light rod and a tension and pressure sensor. One end of the light rod is fixedly installed on the side of the casing away from the center of the electric chuck, and the other end of the light rod is fixedly installed with a top plate. The linkage seat is provided with a guide hole, and the light rod is plugged and assembled with the guide hole. A tension and pressure sensor is fixedly installed between the casing and the top plate.

[0011] Furthermore, the number of the polished rods is two symmetrically arranged or four distributed in a rectangular array, and the guide holes are arranged according to the adaptability of the polished rods.

[0012] Optionally, an auxiliary lifting assembly is provided in the middle of the opposing electric screw modules.

[0013] Specifically, the auxiliary lifting assembly includes a V-shaped frame and a lifting platform. The lower side of the lifting platform is fixedly assembled with the opposing electric screw module. A pair of dovetail bars are fixedly installed on the upper surface of the opposing electric screw module. A dovetail groove is opened at the bottom of the V-shaped frame. The dovetail groove is plug-assembled with the dovetail bar. There are two V-shaped frames.

[0014] Furthermore, locking screws are screwed on the bottom of both sides of the V-shaped frame.

[0015] Optionally, the electric chuck is of two-jaw type, three-jaw type or four-jaw type.

[0016] The beneficial effects are:

[0017] The arc-shaped pressing block that matches different crankshafts can be replaced by the clamping jaw assembly, which has a wide range of uses;

[0018] Multiple arc-shaped clamps can clamp the crankshaft end by surface contact, avoiding indentations on the end surface and improving the convenience of subsequent assembly;

[0019] The pressure detection component can ensure that the clamping force at the end is moderate, and the clamping situation of being too tight or too loose will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic front view of the structure of the utility model;

[0021] Figure 2 It is a schematic cross-sectional view of the structure of the clamping jaw assembly of the utility model;

[0022] Figure 3 It is a schematic cross-sectional view of the structure of the pressure detection component of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the auxiliary lifting component of the utility model.

[0024] In the figure: 1 opposing electric screw module, 2 auxiliary lifting assembly, 21 dovetail bar, 22 V-frame, 23 lifting platform, 3 electric chuck, 4 linkage seat, 5 pressure detection component, 51 light rod, 52 pulling pressure sensor, 53 top plate, 6 clamping jaw assembly, 61 turntable, 62 housing, 63 servo motor, 64 arc pressure block, 65 cushion layer, 7 reduction motor, 8 reciprocating electric screw module. DETAILED DESCRIPTION

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

[0026] like Figure 1 As shown, the utility model provides a crankshaft coupling seat of a lapping machine, including an opposing electric lead screw module 1, a reciprocating electric lead screw module 8 and an electric chuck 3. The opposing electric lead screw module 1 is an existing component with two opposing movable slides, and the reciprocating electric lead screw module 8 is an existing component with one reciprocating movable slide; the electric chuck 3 is an existing component with structures such as a motor, a claw, and a gear ring.

[0027] The slide table of the opposing electric screw module 1 is fixedly installed with a support frame, and the support frame is rotatably installed with a reciprocating electric screw module 8, and the slide table of the reciprocating electric screw module 8 is fixedly installed with an electric chuck 3, one of the support frames is fixedly installed with a reduction motor 7, and the output end of the reduction motor 7 is fixedly assembled with the reciprocating electric screw module 8, and the claw of the electric chuck 3 is fixedly installed with one end of a linkage seat 4, and the other end of the linkage seat 4 is connected and installed with a clamping jaw assembly 6 through a pressure detection piece 5; the opposing electric screw module 1 can move the electric chuck 3 to adjust the distance between them to suit crankshafts of different lengths, and the electric chuck 3 can synchronously move the clamping jaw assembly 6 through the linkage seat 4 to clamp the two ends of the crankshaft, and the clamping force is detected by the pressure detection piece 5, and the reciprocating electric screw module 8 can adjust the eccentricity during rotation, thereby ensuring that the shaft neck rotates at the center.

[0028] Specifically, Figure 2As shown, the clamping jaw assembly 6 includes a casing 62 and a servo motor 63. A turntable 61 is rotatably mounted on one side of the casing 62 close to the center of the electric chuck 3 through a bearing. An arc-shaped pressure block 64 is fixedly mounted on one side of the turntable 61 close to the center of the electric chuck 3. A servo motor 63 is fixedly mounted inside the casing 62. The output end of the servo motor 63 is fixedly assembled with the turntable 61. The servo motor 63 is used to rotate the turntable 61 circumferentially, thereby switching the corresponding arc-shaped pressure block 64. When clamping, the pressure of the linkage seat 4 is transmitted to the arc-shaped pressure block 64 through the casing 62 and the turntable 61, so as to protect the servo motor 63.

[0029] Furthermore, there are 2 to 4 arc-shaped pressing blocks 64 evenly distributed on the circumference of each turntable 61, which can adapt to various crankshaft sizes while meeting the installation space and has a wider clamping range.

[0030] Furthermore, a cushion layer 65 is fixedly installed on one side of the arc-shaped pressing block 64 close to the center of the electric chuck 3. The cushion layer 65 is made of polyurethane and protects the surface of the crankshaft end when clamping.

[0031] Specifically, the pressure detection component 5 includes a light rod 51 and a tension pressure sensor 52. One end of the light rod 51 is fixedly installed on the side of the casing 62 away from the center of the electric chuck 3, and the other end of the light rod 51 is fixedly installed with a top plate 53. The linkage seat 4 is provided with a guide hole, and the light rod 51 is plugged and assembled with the guide hole. The tension pressure sensor 52 is fixedly installed between the casing 62 and the top plate 53. When the jaw assembly 6 clamps the end of the crankshaft, the light rod 51 will move outward along the guide hole and stretch the tension pressure sensor 52 through the top plate 53, thereby obtaining the pressure intensity on the end of the crankshaft.

[0032] Furthermore, there are two optical rods 51 symmetrically arranged or four optical rods 51 distributed in a rectangular array, and the guide holes are adaptively arranged according to the optical rods 51 to ensure the stability of the movement of the optical rods 51 and the uniformity of the force applied to the tension and pressure sensors 52 .

[0033] Optionally, an auxiliary lifting assembly 2 is provided in the middle of the opposing electric lead screw module 1 for temporary placement before clamping the crankshaft.

[0034] Specifically, the auxiliary lifting assembly 2 includes a V-frame 22 and a lifting platform 23. The lifting platform 23 is an existing equipment and can be selected as a manual type or an electric type according to needs. The lower side of the lifting platform 23 is fixedly assembled with the opposing electric screw module 1. A pair of dovetail bars 21 are fixedly installed on the upper surface of the opposing electric screw module 1. A dovetail groove is provided at the bottom of the V-frame 22, and the dovetail groove is plug-assembled with the dovetail bar 21. There are two V-frames 22; the V-frame 22 can translate along the dovetail bar 21 to adjust the distance between them, temporarily support different crankshafts, and then be lifted to a work station convenient for clamping by the lifting platform 23.

[0035] Furthermore, locking screws are screwed to the bottom of both sides of the V-frame 22. When the locking screws are tightened downward, the locking screws are pressed against the top of the lifting platform 23, thereby fixing the V-frame 22, making it convenient to quickly take and place crankshafts of the same type.

[0036] The electric chuck 3 is of two-jaw, three-jaw or four-jaw type. Accordingly, there are two, three or four arc-shaped pressing blocks 64 for clamping one end of the crankshaft distributed circumferentially to ensure full clamping of the end.

[0037] The working principle of this embodiment:

[0038] The electrical components such as the opposing electric lead screw module 1, the reciprocating electric lead screw module 8, the electric chuck 3, the servo motor 63, the tension and pressure sensor 52 are electrically connected to the controller in the external control cabinet through wires, and can be uniformly controlled.

[0039] When in use, the crankshaft is placed on the V-shaped frame 22 and lifted to the center by the lifting platform 23; the turntable 61 is rotated circumferentially by the servo motor 63, thereby switching the corresponding arc-shaped pressing block 64 to the side close to the crankshaft;

[0040] Control the opposite electric lead screw modules 1 to move the electric chuck 3 closer to each other until the end of the crankshaft is located between the arc-shaped pressing blocks 64. At this time, control the electric chuck 3 to move the clamping jaw assembly 6 toward the center, and multiple arc-shaped pressing blocks 64 gradually press the end until the value detected by the pressure detection component 5 reaches the set value.

[0041] The reciprocating electric lead screw module 8 simultaneously moves all the components on the electric chuck 3 to adjust the eccentric distance, and the journals can be finely ground after the reduction motor 7 rotates.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A crankshaft coupling seat of a lapping machine, comprising an opposing electric lead screw module (1), a reciprocating electric lead screw module (8) and an electric chuck (3), characterized in that: The slide table of the opposing electric lead screw module (1) is fixedly mounted with a support frame, the support frame is rotatably mounted with a reciprocating electric lead screw module (8), the slide table of the reciprocating electric lead screw module (8) is fixedly mounted with an electric chuck (3), one of the support frames is fixedly mounted with a reduction motor (7), the output end of the reduction motor (7) is fixedly assembled with the reciprocating electric lead screw module (8), the claw of the electric chuck (3) is fixedly mounted with one end of a linkage seat (4), and the other end of the linkage seat (4) is fixedly mounted with a pressure The detection member (5) is connected to a clamping jaw assembly (6); the clamping jaw assembly (6) comprises a housing (62) and a servo motor (63); a turntable (61) is rotatably mounted on a side of the housing (62) close to the center of the electric chuck (3) via a bearing; an arc-shaped pressing block (64) is fixedly mounted on a side of the turntable (61) close to the center of the electric chuck (3); a servo motor (63) is fixedly mounted inside the housing (62); and an output end of the servo motor (63) is fixedly assembled with the turntable (61).

2. The crankshaft coupling seat of the lapping machine according to claim 1, characterized in that: There are 2 to 4 arc-shaped pressing blocks (64) on each rotating disk (61) which are evenly distributed around the circumference.

3. The crankshaft coupling seat of the lapping machine according to claim 1, characterized in that: A cushion layer (65) is fixedly mounted on one side of the arc-shaped pressing block (64) close to the center of the electric chuck (3).

4. The crankshaft coupling seat of the lapping machine according to claim 1, characterized in that: The pressure detection component (5) comprises a light rod (51) and a tension pressure sensor (52); one end of the light rod (51) is fixedly mounted on a side of the housing (62) away from the center of the electric chuck (3); a top plate (53) is fixedly mounted on the other end of the light rod (51); a guide hole is formed in the linkage seat (4); the light rod (51) is plugged into the guide hole; and the tension pressure sensor (52) is fixedly mounted between the housing (62) and the top plate (53).

5. The crankshaft coupling seat of the lapping machine according to claim 4, characterized in that: The polished rods (51) are two symmetrically arranged or four distributed in a rectangular array, and the guide holes are adaptively arranged according to the polished rods (51).

6. The crankshaft coupling seat of the lapping machine according to claim 1, characterized in that: An auxiliary lifting component (2) is provided in the middle of the opposing electric lead screw module (1).

7. The crankshaft coupling seat of the lapping machine according to claim 6, characterized in that: The auxiliary lifting assembly (2) comprises a V-shaped frame (22) and a lifting platform (23), the lower side of the lifting platform (23) is fixedly assembled with the opposing electric screw module (1), a pair of dovetail strips (21) are fixedly installed on the upper surface of the opposing electric screw module (1), a dovetail groove is provided at the bottom of the V-shaped frame (22), and the dovetail groove is plug-assembled with the dovetail strip (21), and the number of the V-shaped frames (22) is two.

8. The crankshaft coupling seat of the lapping machine according to claim 7, characterized in that: The bottoms of both sides of the V-shaped frame (22) are screwed with locking screws.

9. The crankshaft coupling seat of the lapping machine according to claim 1, characterized in that: The electric chuck (3) is of a two-jaw type, a three-jaw type or a four-jaw type.

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