Grinding machine crankshaft machining counterweight device

Abstract

The utility model discloses a grinding machine crankshaft machining counterweight device, and relates to the technical field of counterweight devices. The device comprises a grinding machine main body, a control table arranged on the grinding machine main body and clamps arranged on one side of the control table, the control table is rotationally arranged on one side of the grinding machine main body, and a crankshaft body is clamped between the two sets of clamps. When the crankshaft is clamped between the two sets of clamps, counterweight adjustment can be conducted on the parts, with small centrifugal force, of the clamps through the counterweight mechanisms, so that the centrifugal force generated when the crankshaft rotates is balanced, the overall gravity center of the clamps reaches a balanced state, the crankshaft can be stably clamped by the clamps, the situation that the crankshaft deviates at the clamps is avoided, and the service life of the crankshaft is prolonged. Therefore, the grinding tool can perform finish machining on the crankshaft.

Description

Technical Field

[0001] The utility model relates to the technical field of counterweight devices, in particular to a counterweight device for machining crankshafts of a grinding machine. Background Art

[0002] In the prior art, a crankshaft grinder is used to grind the outer wall of the crankshaft. During this process, two sets of clamps are first used to clamp the two ends of the crankshaft, and then the clamps are rotated to drive the crankshaft to rotate so that the grinding tool at the crankshaft grinder can grind the outer wall of the crankshaft in all directions.

[0003] However, due to the influence of the crankshaft's own structure, when the crankshaft is installed in the fixture, the center of the crankshaft is inconsistent with the center of the fixture, which causes the center of gravity to shift during the rotation of the crankshaft. At this time, the centrifugal force on the side where the center of gravity is biased is larger, so that the fixture cannot firmly clamp the crankshaft under the influence of the larger centrifugal force, causing the crankshaft to shift in position at the fixture, and then the grinding position of the grinder on the crankshaft is shifted, resulting in poor grinding accuracy of the crankshaft outer wall. In view of the shortcomings of the existing technology, we propose a crankshaft processing counterweight device for a grinder to solve the above problems. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a counterweight device for crankshaft processing of a grinder, which solves the problem that the center of gravity will shift when the clamp drives the crankshaft to rotate due to the influence of the crankshaft's own structure, making it impossible for the clamp to firmly clamp the crankshaft under the influence of large centrifugal force, resulting in positional offset of the crankshaft at the clamp.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a counterweight device for machining crankshafts of a grinding machine, comprising a grinding machine body, a console disposed on the grinding machine body, and a fixture disposed on one side of the console, wherein the crankshaft body is clamped between two sets of the fixtures, and a counterweight mechanism is disposed on the outer wall of the fixture, wherein the counterweight mechanism comprises:

[0006] A plurality of weight boxes are arranged on the outer wall of the fixture, and water is contained in the weight boxes;

[0007] a piston plate slidably disposed inside the counterweight box;

[0008] A control screw is rotatably mounted on the counterweight box, and one end of the control screw is connected to one side of the piston plate;

[0009] The inlet and outlet pipes are arranged at the bottom end of one side of the counterweight box, and a valve is arranged at one end of the inlet and outlet pipes.

[0010] Preferably, a bearing is fixedly connected to one side of the piston plate, and an outer wall of one end of the control screw is fixedly connected to an inner wall of the bearing.

[0011] Preferably, a transparent window is provided on one side of the counterweight box, and scale lines are provided on a side of the counterweight box close to the transparent window.

[0012] Preferably, a group of labels are provided on one side of each of the multiple groups of counterweight boxes.

[0013] Preferably, the outer wall of the clamp is provided with a mounting assembly, and the mounting assembly is used for installing multiple sets of counterweight boxes.

[0014] Preferably, the installation assembly includes:

[0015] A mounting ring fixedly connected to one side of the plurality of weight boxes;

[0016] A mounting plate fixedly arranged on the inner wall of the mounting ring;

[0017] A mounting screw is fixedly arranged on one side of the fixture, and the mounting plate is sleeved on the outer wall of the mounting screw;

[0018] The nut is threadedly sleeved on one end of the mounting screw.

[0019] Preferably, a magnetic ring is fixedly connected to one side of the plurality of weight boxes away from the mounting ring, and one side of the magnetic ring is magnetically attracted to one side of the console.

[0020] Preferably, the inner diameter of the mounting ring is smaller than the outer diameter of the clamp.

[0021] The utility model discloses a counterweight device for machining crankshafts of a grinding machine, which has the following beneficial effects: the counterweight device for machining crankshafts of a grinding machine is configured to evenly arrange counterweight mechanisms around the outside of a clamp, so that when the crankshaft is clamped between two sets of clamps, the counterweight mechanism can be used to adjust the counterweight of the parts of the clamp where the centrifugal force is smaller, thereby balancing the centrifugal force generated when the crankshaft rotates, so that the overall center of gravity of the clamp reaches a balanced state, so that the clamp can stably clamp the crankshaft, avoid positional offset of the crankshaft at the clamp, and enable the grinding tool to perform fine machining on the crankshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2This is a schematic diagram of the structure of the fixture and counterweight mechanism of the utility model;

[0025] Figure 3 This is an exploded view of the fixture, mounting screw and nut structure of the utility model;

[0026] Figure 4 This is an exploded view of the structure of the counterweight box, magnetic ring and mounting ring of the utility model;

[0027] Figure 5 This is a schematic diagram of the internal structure of the counterweight box of the utility model;

[0028] Figure 6 This is a schematic diagram of the piston plate and control screw structure of the utility model.

[0029] In the picture:

[0030] 1. Grinding machine body;

[0031] 2. Console;

[0032] 3. Fixture;

[0033] 4. Crankshaft body;

[0034] 5. Counterweight mechanism; 51. Counterweight box; 52. Piston plate; 521. Bearing; 53. Control screw; 54. Inlet and outlet pipes; 55. Valve; 56. Transparent window; 561. Scale mark; 57. Label;

[0035] 6. Mounting assembly; 61. Magnetic ring; 62. Mounting ring; 63. Mounting plate; 64. Mounting screw; 65. Nut. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0037] The embodiment of the present application provides a counterweight device for crankshaft processing on a grinder, thereby solving the problem that the center of gravity may shift when the clamp drives the crankshaft to rotate due to the influence of the crankshaft's own structure, making it impossible for the clamp to firmly clamp the crankshaft under the influence of a large centrifugal force, resulting in positional offset of the crankshaft at the clamp. The counterweight is implemented on the outer wall of the clamp to ensure that the gravity between the clamp and the crankshaft is in a balanced state.

[0038] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0039] The embodiment of the utility model discloses a counterweight device for machining a crankshaft of a grinding machine.

[0040] According to the attached Figure 1-6 As shown, it includes a grinder body 1, a control console 2 arranged on the grinder body 1 and a clamp 3 arranged on one side of the control console 2. The control console 2 is rotatably connected to the grinder body 1. The crankshaft body 4 is clamped between the two sets of clamps 3. The grinder body 1, the control console 2 and the clamp 3 constitute a crankshaft grinder with model K2700-U. When in use, the crankshaft body 4 is clamped and fixed on the crankshaft grinder by the two sets of clamps 3. The crankshaft grinder is provided with a grinding tool. By opening the grinding tool, the outer wall of the crankshaft body 4 can be ground. In addition, the clamp 3 can rotate with the control console 2, so that the grinding tool can grind the outer wall of the crankshaft body 4 in all directions.

[0041] The outer wall of the clamp 3 is provided with a counterweight mechanism 5. Affected by the structure of the crankshaft body 4 itself, when it is clamped in the clamp 3, the center of the crankshaft body 4 is inconsistent with the center of the clamp 3, so that the center of gravity will be offset during the rotation of the crankshaft body 4, and the centrifugal force on the side where the center of gravity is biased is larger. Therefore, it is necessary to set a counterweight mechanism 5 on the side of the clamp 3 with smaller centrifugal force, so as to balance the centrifugal force generated by the crankshaft body 4 during rotation, so that the overall center of gravity of the clamp 3 reaches a balanced state, so that the clamp 3 can stably clamp the crankshaft body 4. The counterweight mechanism 5 includes a counterweight box 51, and multiple groups of counterweight boxes 51 are provided on the outer wall of the clamp 3. Water is contained in the interior of the counterweight box 51, and a piston plate 52 is slidably provided in the interior of the counterweight box 51. The control screw 53 is rotatably provided on the counterweight box 51, and one end of the control screw 53 is connected to one side of the piston plate 52. A bearing 521 is fixedly connected to one side of the piston plate 52, and the outer wall of one end of the control screw 53 is connected to the inner wall of the bearing 521 The fixed connection is made by setting a bearing 521, so that when the control screw 53 is rotated, the piston plate 52 will not rotate equally with the control screw 53, and at this time, under the limit of the inner cavity of the counterweight box 51, the piston plate 52 can only move up and down along the inner cavity of the counterweight box 51. The inlet and outlet pipe 54 is set at the bottom end of one side of the counterweight box 51, and the inlet and outlet pipe 54 is connected to the inner cavity of the counterweight box 51. A valve 55 is set at one end of the inlet and outlet pipe 54. First, the water pipe and the inlet and outlet pipe 54 are connected by plugging. The valve 55 provided at the inlet and outlet pipes 54 is then opened to connect the water pipe with the interior of the counterweight box 51. The control screw 53 provided at the counterweight box 51 is then rotated to drive the piston plate 52 to move away from the inlet and outlet pipes 54. At this time, the space between the bottom end of the piston plate 52 and the bottom of the inner cavity of the counterweight box 51 gradually increases, thereby increasing the total amount of water that the counterweight box 51 can hold, thereby increasing the gravity of the position of the clamp 3 close to the counterweight box 51.

[0042] A transparent window 56 is provided on one side of the counterweight box 51, and a scale line 561 is provided on the side of the counterweight box 51 close to the transparent window 56. Through the transparent window 56 and the scale line 561, the water level line of the water body filled in the counterweight box 51 can be visually checked. A group of labels 57 are provided on one side of multiple groups of counterweight boxes 51, so that various parts of the clamp 3 can be marked through the labels 57 to avoid errors in the counterweight position.

[0043] The outer wall of the clamp 3 is provided with a mounting assembly 6, which is used for the installation of multiple groups of counterweight boxes 51. The mounting assembly 6 includes a mounting ring 62, which is fixedly connected to one side of the multiple groups of counterweight boxes 51. The inner diameter of the mounting ring 62 is smaller than the outer diameter of the clamp 3. The side of the multiple groups of counterweight boxes 51 away from the mounting ring 62 is fixedly connected with a magnetic ring 61. The console 2 is made of metal. One side of the magnetic ring 61 is magnetically attracted to one side of the console 2, and the magnetic ring 61 is sleeved on the outer wall of the clamp 3. The mounting plate 63 is fixedly set on the inner wall of the mounting ring 62, and the mounting screw 64 is fixedly set on one side of the clamp 3. The mounting plate 63 is sleeved on the outer wall of the mounting screw 64, and the nut 65 is threadedly sleeved on one end of the mounting screw 64. The multiple sets of counterweight boxes 51 connected to the mounting ring 62 through the magnetic ring 61 are sleeved on the outer wall of the clamp 3. At this time, the mounting plate 63 set on the inner wall of the mounting ring 62 and the mounting screw 64 set on one side of the clamp 3 can be used to locate the installation position between the multiple sets of counterweight boxes 51 and the clamp 3. Subsequently, the nut 65 is threadedly sleeved on the outer wall of the mounting screw 64 so that one side of the nut 65 is abutted against one side of the mounting plate 63, thereby firmly installing the multiple sets of counterweight boxes 51 around the outside of the clamp 3.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A counterweight device for machining crankshafts of a grinding machine, comprising a grinding machine body (1), a control console (2) arranged on the grinding machine body (1), and a clamp (3) arranged on one side of the control console (2), wherein a crankshaft body (4) is clamped between two sets of the clamps (3), and characterized in that: The outer wall of the clamp (3) is provided with a counterweight mechanism (5), and the counterweight mechanism (5) comprises: A counterweight box (51), wherein a plurality of groups of the counterweight boxes (51) are arranged on the outer wall of the clamp (3), and water is contained in the counterweight boxes (51); A piston plate (52) is slidably disposed inside the counterweight box (51); A control screw (53) is rotatably mounted on the counterweight box (51), and one end of the control screw (53) is connected to one side of the piston plate (52); An inlet and outlet pipe (54) is provided at the bottom end of one side of the counterweight box (51), and a valve (55) is provided at one end of the inlet and outlet pipe (54).

2. A counterweight device for crankshaft machining on a grinding machine according to claim 1, characterized in that: A bearing (521) is fixedly connected to one side of the piston plate (52), and an outer wall of one end of the control screw (53) is fixedly connected to an inner wall of the bearing (521).

3. The crankshaft machining counterweight device for a grinding machine according to claim 2, characterized in that: A transparent window (56) is provided on one side of the counterweight box (51), and a scale line (561) is provided on one side of the counterweight box (51) close to the transparent window (56).

4. The crankshaft machining counterweight device for a grinding machine according to claim 3, characterized in that: A group of labels (57) are provided on one side of each of the plurality of groups of counterweight boxes (51).

5. The crankshaft machining counterweight device for a grinding machine according to claim 1, characterized in that: The outer wall of the clamp (3) is provided with a mounting assembly (6), and the mounting assembly (6) is used for mounting multiple sets of counterweight boxes (51).

6. The crankshaft machining counterweight device for a grinding machine according to claim 5, characterized in that: The mounting assembly (6) comprises: A mounting ring (62) fixedly connected to one side of the plurality of weight boxes (51); A mounting plate (63) fixedly mounted on the inner wall of the mounting ring (62); A mounting screw (64) is fixedly arranged on one side of the clamp (3), and the mounting plate (63) is sleeved on the outer wall of the mounting screw (64); A nut (65) is threadedly sleeved on one end of the mounting screw (64).

7. The crankshaft machining counterweight device for a grinding machine according to claim 6, characterized in that: A magnetic ring (61) is fixedly connected to one side of the plurality of weight boxes (51) away from the mounting ring (62), and one side of the magnetic ring (61) is magnetically attracted to one side of the console (2).

8. The crankshaft machining counterweight device for a grinding machine according to claim 7, characterized in that: The inner diameter of the mounting ring (62) is smaller than the outer diameter of the clamp (3).

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