Automobile crankshaft polishing machine capable of reducing crankshaft damage

Abstract

The utility model discloses an automobile crankshaft polishing machine capable of reducing crankshaft damage, which relates to the field of automobile part processing and comprises a bottom plate, vertical plates are fixedly connected to two ends of the upper surface of the bottom plate, a driving shaft is rotatably connected to the upper end of one of the vertical plates, and a first motor used for driving the driving shaft to rotate is fixedly mounted on the vertical plate. The shaft necks, located on the same side, of the crankshaft are arranged on the lower grinding belt in a sleeving mode at the same time and installed, then the first motor drives the driving shaft and the crankshaft to rotate, at the moment, the hanging shaft pulls down the lower side of the grinding belt under the action of the gravity of the hanging shaft to straighten the grinding belt, and at the moment, the upper side of the grinding belt tightly abuts against the shaft necks; and then the driving structure drives the grinding belt in the straightened state to rotate, through rotation of the crankshaft and rotation of the grinding belt with downward pressure, the multiple journals can be stably polished at a time, the polishing efficiency is improved, and meanwhile damage to the crankshaft is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to an automobile crankshaft polishing machine capable of reducing crankshaft damage. Background Art

[0002] The crankshaft has two important parts: the main journal and the connecting rod journal. The main journal is installed on the cylinder block, the connecting rod journal is connected to the big end hole of the connecting rod, and the small end hole of the connecting rod is connected to the cylinder piston, forming a typical crank slider mechanism. In order to reduce the wear of the main journal and the connecting rod journal during work and ensure the smooth operation of the crankshaft, the main journal and the connecting rod journal need to be polished when processing the crankshaft.

[0003] The existing processing method is to manually polish the journal directly with an abrasive belt. The polishing quality during the polishing operation depends entirely on the operator's experience, and generally the journals on a crankshaft are polished one by one. It is impossible to polish multiple main journals and connecting rod journals at the same time. This polishing method is time-consuming and labor-intensive, has poor polishing efficiency, and is prone to damage the crankshaft. Utility Model Content

[0004] The purpose of the utility model is to provide an automobile crankshaft polishing machine that reduces crankshaft damage in order to solve the above-mentioned problem, as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides an automobile crankshaft polishing machine for reducing crankshaft damage, comprising a bottom plate, both ends of the upper surface of the bottom plate are fixedly connected to vertical plates, one of the vertical plates is rotatably connected to a driving shaft, a motor is fixedly installed on the vertical plate to drive the driving shaft to rotate, and the other vertical plate is provided with a top support fixing member for cooperating with the driving shaft to fix the crankshaft;

[0007] The lower parts of the two vertical plates are connected with sliders for sliding in the vertical direction, and the upper sides between the two sliders are rotatably connected with a hanging shaft, and the hanging shaft is sleeved with a plurality of grinding belts for sleeved with the crankshaft journals, and the lower sides between the two sliders are provided with a driving structure for driving the plurality of grinding belts to rotate simultaneously.

[0008] The above-mentioned automobile crankshaft polishing machine for reducing crankshaft damage is used. When in use, the journals on the same side of the crankshaft are simultaneously sleeved on the grinding belt below, and then the crankshaft is fixed between the upper ends of the two vertical plates by a top support fixing piece, and the drive shaft and the crankshaft are driven to rotate by a motor. At this time, the hanging shaft drives the two sliders to move downward under the action of its own gravity, and at the same time pulls down the lower side of the grinding belt to straighten it. At this time, the upper side of the grinding belt is tightly in contact with the journal, and then the grinding belt in the straightened state is driven to rotate by the driving structure. Through the self-rotation of the crankshaft and the rotation of the grinding belt with downward pressure, stable polishing of multiple journals can be achieved at a single time.

[0009] Preferably, the top support fixture includes an electric push rod fixedly mounted on the upper end of the vertical plate, the output end of the electric push rod and the end of the drive shaft are both connected to a connecting flange, and the output end of the electric push rod is rotatably connected to the connecting flange.

[0010] Preferably, a slide groove is provided through the lower portion of the vertical plate, and a slider is slidably connected in the slide groove, and the cross-sections of the slider and the slide groove are both cross-shaped.

[0011] Preferably, the driving structure includes a shaft rod rotatably connected between two sliders, the shaft rod is provided with a plurality of adjustment sleeves corresponding one to one with the grinding belts, the circumferential surface of the adjustment sleeve is provided with gears, the outer wall of the grinding belt is fixedly connected with a gear ring meshing with the gears, the shaft rod is provided with a plug-in structure for fixing the position of the adjustment sleeve, and one of the sliders is fixedly installed with a motor 2 for driving the shaft rod to rotate.

[0012] Preferably, the plug-in structure comprises a bolt hole extending through one side of the adjusting sleeve, a bolt is threadedly connected to the bolt hole, and a plurality of positioning holes extending through the shaft rod and connected to the bolt are provided.

[0013] Preferably, the end of the bolt hole is designed as a countersunk head.

[0014] Preferably, counterweights are provided inside the two sliders.

[0015] The beneficial effects are:

[0016] The journals on the same side of the crankshaft are simultaneously sleeved on the grinding belt below and installed, and then the drive shaft and the crankshaft are driven to rotate by a motor. At this time, the hanging shaft pulls down the lower side of the grinding belt under the action of its own gravity to straighten it. At this time, the upper side of the grinding belt is tightly in contact with the journal, and then the grinding belt in the straightened state is driven to rotate by the driving structure. Through the self-rotation of the crankshaft and the rotation of the grinding belt with downward pressure, stable polishing of multiple journals can be achieved at a single time, thereby improving the polishing efficiency and avoiding damage to the crankshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a partial stereogram of the utility model;

[0020] Figure 3 It is a partial stereogram of the driving structure of the utility model.

[0021] The following are the descriptions of the reference numerals:

[0022] 1. Base plate; 2. Vertical plate; 3. Plug-in structure; 3a. Bolt hole; 3b. Bolt; 3c. Positioning hole; 4. Driving structure; 4a. Adjusting sleeve; 4b. Gear; 4c. Gear ring; 4d. Shaft; 4e. Motor 2; 5. Driving shaft; 6. Motor 1; 7. Slider; 8. Hanging shaft; 9. Slide; 10. Electric push rod; 11. Connecting flange; 12. Grinding belt. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0024] See also Figure 1-Figure 3 As shown, the utility model provides an automobile crankshaft polishing machine for reducing crankshaft damage, comprising a bottom plate 1, both ends of the upper surface of the bottom plate 1 are fixedly connected with vertical plates 2, the upper end of one of the vertical plates 2 is rotatably connected with a driving shaft 5, a motor 6 for driving the driving shaft 5 to rotate is fixedly installed on the vertical plate 2, and a top support fixing piece for cooperating with the driving shaft 5 to fix the crankshaft is provided on the upper end of the other vertical plate 2;

[0025] The lower parts of the two vertical plates 2 are both connected with sliders 7 for sliding in the vertical direction, and the upper sides between the two sliders 7 are connected with a hanging shaft 8 for rotation. The hanging shaft 8 is provided with a plurality of grinding belts 12 for being sleeved on the crankshaft journals, and the lower sides between the two sliders 7 are provided with a driving structure 4 for driving the plurality of grinding belts 12 to rotate simultaneously.

[0026] As an optional embodiment, the top support fixing member includes an electric push rod 10 fixedly installed on the upper end of the vertical plate 2, and the output end of the electric push rod 10 and the end of the drive shaft 5 are both connected with a connecting flange 11, and the output end of the electric push rod 10 is rotatably connected to the connecting flange 11. When the crankshaft is installed between the two vertical plates 2, one end thereof is connected to the connecting flange 11 on the drive shaft 5, and the other end is extended through the output end of the electric push rod 10, and then the connecting flange 11 at the output end is connected to the end of the crankshaft. At this time, the motor 6 can drive the drive shaft 5 to rotate, thereby driving the crankshaft to rotate.

[0027] As an optional implementation, a slide groove 9 is opened through the lower part of the vertical plate 2, and the slider 7 is slidably connected in the slide groove 9. The cross-sections of the slider 7 and the slide groove 9 are both cross-shaped, which can make the slider 7 and the hanging shaft 8 more stable when moving up and down.

[0028] Reference Figure 3 As shown, the driving structure 4 includes a shaft 4d rotatably connected between two sliders 7, a plurality of adjustment sleeves 4a corresponding to the grinding belts 12 are sleeved on the shaft 4d, a gear 4b is provided on the circumferential surface of the adjustment sleeve 4a, a gear ring 4c meshing with the gear 4b is fixedly connected to the outer wall of the grinding belt 12, a plug-in structure 3 for fixing the position of the adjustment sleeve 4a is provided on the shaft 4d, a motor 4e for driving the shaft 4d to rotate is fixedly installed on one of the sliders 7, and the plug-in structure 3 includes a bolt hole 3a extending through one side of the adjustment sleeve 4a, and a screw thread is connected in the bolt hole 3a. Bolt 3b, a plurality of positioning holes 3c for plugging with bolt 3b are formed on shaft 4d. When the position of the hanging grinding belt 12 is determined, the adjusting sleeve 4a is moved to a suitable position so that the gear 4b on its surface meshes with the toothed ring 4c on the surface of the grinding belt 12. Then, the bolt 3b is inserted into the bolt hole 3a and the positioning hole 3c at the same time and rotated to fix the position of the adjusting sleeve 4a. When the motor 4e drives the shaft 4d to rotate, the adjusting sleeve 4a and the gear 4b can be driven to rotate together, and the gear 4b meshes with the toothed ring 4c on the surface of the grinding belt 12, thereby driving the grinding belt 12 to rotate.

[0029] Furthermore, the end of the bolt hole 3a is designed as a countersunk head, which can prevent the end of the bolt 3b from protruding outward, thereby providing good conditions for the meshing of the gear 4b and the gear ring 4c.

[0030] Specifically, counterweights are provided inside the two sliders 7 to provide sufficient pulling force for the hanging shaft 8 to pull down the grinding belt 12, so that the inner wall of the grinding belt 12 can effectively polish the crankshaft journal.

[0031] With the above structure, when in use, the journals on the same side of the crankshaft are simultaneously sleeved on the grinding belt 12 below, and then the crankshaft is fixed between the upper ends of the two vertical plates 2 by a top support fixture, and the drive shaft 5 and the crankshaft are driven to rotate by a motor 6. At this time, the hanging shaft 8 drives the two sliders 7 to move downward under the action of its own gravity, and at the same time pulls down the lower side of the grinding belt 12 to straighten it. At this time, the upper side of the grinding belt 12 is tightly in contact with the journal, and then the grinding belt 12 in the straightened state is driven to rotate by the driving structure 4. Through the self-rotation of the crankshaft and the rotation of the grinding belt 12 with downward pressure, stable polishing of multiple journals can be achieved at a single time.

[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An automobile crankshaft polishing machine for reducing crankshaft damage, comprising a base plate (1), characterized in that: Both ends of the upper surface of the bottom plate (1) are fixedly connected to vertical plates (2), the upper end of one of the vertical plates (2) is rotatably connected to a drive shaft (5), a motor (6) for driving the drive shaft (5) to rotate is fixedly installed on the vertical plate (2), and a top support fixing member for cooperating with the drive shaft (5) to fix the crankshaft is provided on the upper end of the other vertical plate (2); The lower parts of the two vertical plates (2) are both slidably connected with sliders (7) in the vertical direction, the upper sides of the two sliders (7) are rotatably connected with a hanging shaft (8), the hanging shaft (8) is sleeved with a plurality of grinding belts (12) for sleeved with the crankshaft journal, and the lower sides of the two sliders (7) are provided with a driving structure (4) for simultaneously driving the plurality of grinding belts (12) to rotate.

2. The automobile crankshaft polishing machine for reducing crankshaft damage according to claim 1, characterized in that: The top support fixing member includes an electric push rod (10) fixedly mounted on the upper end of the vertical plate (2), the output end of the electric push rod (10) and the end of the drive shaft (5) are both connected to a connecting flange (11), and the output end of the electric push rod (10) is rotatably connected to the connecting flange (11).

3. The automobile crankshaft polishing machine for reducing crankshaft damage according to claim 1, characterized in that: A sliding groove (9) is provided through the lower part of the vertical plate (2), and a sliding block (7) is slidably connected in the sliding groove (9), and the cross-sections of the sliding block (7) and the sliding groove (9) are both cross-shaped.

4. The automobile crankshaft polishing machine for reducing crankshaft damage according to claim 1, characterized in that: The driving structure (4) comprises a shaft (4d) rotatably connected between two sliders (7); a plurality of adjustment sleeves (4a) corresponding one to one with the grinding belt (12) are sleeved on the shaft (4d); a gear (4b) is provided on the circumferential surface of the adjustment sleeve (4a); a gear ring (4c) meshing with the gear (4b) is fixedly connected to the outer wall of the grinding belt (12); a plug-in structure (3) for fixing the position of the adjustment sleeve (4a) is provided on the shaft (4d); and a motor 2 (4e) for driving the shaft (4d) to rotate is fixedly installed on one of the sliders (7).

5. The automobile crankshaft polishing machine for reducing crankshaft damage according to claim 4, characterized in that: The plug-in structure (3) comprises a bolt hole (3a) extending through one side of the adjustment sleeve (4a), a bolt (3b) being threadedly connected to the bolt hole (3a), and a plurality of positioning holes (3c) extending through the shaft (4d) and being plugged into the bolt (3b).

6. The automobile crankshaft polishing machine for reducing crankshaft damage according to claim 5, characterized in that: The end of the bolt hole (3a) is designed as a countersunk head.

7. The automobile crankshaft polishing machine for reducing crankshaft damage according to claim 1, characterized in that: Counterweights are arranged inside the two sliding blocks (7).

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