A device for ultra-finishing the surface of a cylindrical workpiece

Abstract

The present invention discloses a cylindrical workpiece surface super-finishing processing device, comprising a fixed base, a fixed vertical plate arranged on the fixed base, a winding driving wheel, a winding driven wheel, a guide wheel, a tensioning cylinder, a guide wheel mounting support and a polishing belt arranged on the outer side of the fixed vertical plate, and a driving driving wheel motor, a guide wheel mounting support swing motor, a reducer, a cam, a contact plate, a sliding rod and a spring arranged on the inner side of the fixed vertical plate. The present invention decides to utilize the working principle of the external cylindrical grinder to replace the original grinding wheel component device with the polishing belt assembly component, thereby realizing the function of polishing the outer diameter of the cylindrical workpiece on the external cylindrical grinder, meeting the high requirements of the surface roughness of the rocker cylinder when the slide bar seat assembly is running at high speed, which not only enables the manufacturer to sell a complete set of slide bar seat assemblies in the form of groups, thereby improving production profits, but also can save customers from the trouble of super-finishing and assembly by themselves, thereby reducing the difficulty of use.

Description

Technical Field

[0001] The invention belongs to the technical field of parts processing, and in particular relates to a device for ultra-finishing the surface of a cylindrical workpiece. Background Art

[0002] In the sewing machine industry, the slide bar seat assembly is the component that controls the movement of the lower looper. When it runs at high speed, the cylindrical surface smoothness of the single rocker in its assembly is required to be very high in order to achieve smooth operation and low noise.

[0003] The rocker is one of the three single-product parts of the slide bar seat assembly. The other two single-product parts can be sold as finished products by manufacturers. However, due to the very high roughness requirements on the outer diameter of the rocker, the manufacturer is currently unable to achieve super-finishing treatment on the cylindrical surface of the workpiece. It is usually sold in the form of semi-finished products. Customers will super-finish the workpieces themselves and then assemble them. This makes it impossible to sell the slide bar seat assembly as a component, which not only reduces a lot of profits for manufacturers, but also increases the difficulty of use for customers. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned prior art, the present invention provides a cylindrical workpiece surface ultra-finishing processing device, which utilizes the working principle of external cylindrical grinding and replaces the original grinding wheel component device with a polishing belt assembly component to achieve polishing of the outer diameter of the cylindrical workpiece on the external cylindrical grinding machine.

[0005] In order to solve the above technical problems and achieve the above technical effects, the present invention is implemented through the following technical solutions:

[0006] A cylindrical workpiece surface ultra-finishing treatment device, comprising a fixed base, a fixed vertical plate is arranged on the fixed base, a winding driving wheel, a winding driven wheel, a guide wheel, a tensioning cylinder, a guide wheel mounting support and a polishing belt are arranged on the outer side of the fixed vertical plate, and a driving driving wheel motor, a guide wheel mounting support swing motor, a reducer, a cam, a contact plate, a sliding rod and a spring are arranged on the inner side of the fixed vertical plate;

[0007] The driving wheel motor and the reducer are both fixedly connected to the inner side surface of the fixed vertical plate, the motor shaft of the driving wheel motor is connected to the input end of the reducer, and the output end of the reducer is connected to the winding driving wheel after passing through the fixed vertical plate; the driving guide wheel installation support swing motor is fixedly connected to the upper surface of the fixed base, and the motor shaft of the driving guide wheel installation support swing motor is connected to the cam; the sliding rod is slidably arranged on the fixed vertical plate, the inner end of the sliding rod is fixedly connected to one surface of the contact plate, and the other surface of the contact plate contacts the cam; the spring is sleeved on the sliding rod, and one end of the spring contacts the fixed vertical plate The other end of the spring is in contact with the contact plate; the outer end of the sliding rod passes through the fixed vertical plate and is fixedly connected to the guide wheel mounting support, the guide wheel is movably arranged on the front surface of the guide wheel mounting support, the tensioning cylinder is fixedly connected to the rear surface of the guide wheel mounting support, and the telescopic rod of the tensioning cylinder is fixedly connected to the guide wheel inside the guide wheel mounting support; the winding driven wheel is rotatably mounted on the outer side surface of the fixed vertical plate, and a coil for generating a certain rotational resistance is arranged inside the winding driven wheel, most of the polishing belt is wound around the winding driven wheel, and the head of the polishing belt is fixedly wound around the winding driving wheel after passing around the guide wheel.

[0008] Furthermore, the driving wheel motor is installed on the inner side surface of the fixed vertical plate through a driving wheel motor fixing seat.

[0009] Furthermore, the driving guide wheel mounting support swing motor is mounted on the upper surface of the fixed base via a driving guide wheel mounting support swing motor fixing seat.

[0010] Furthermore, the guide wheel is movably mounted on the front surface of the guide wheel mounting support via a guide wheel mounting seat, and the rear portion of the guide wheel mounting seat extends into the guide wheel mounting support and is fixedly connected to the telescopic rod of the tensioning cylinder.

[0011] Furthermore, the clearance between the sliding rod and the through hole on the fixed vertical plate is 0.02 mm to ensure that the overall swing of the guide wheel mounting support is stable and smooth.

[0012] Furthermore, the guide wheel is made of a hard plastic material with a certain elasticity.

[0013] Furthermore, the resistance value of the winding driven wheel and the elasticity of the polishing belt and the pressure of the tensioning cylinder should be adjusted appropriately, and should be greater than the tensioning force of the tensioning cylinder and within the allowable elastic range of the polishing belt.

[0014] Furthermore, two sliding rods are arranged on the fixed vertical plate, and the two sliding rods are arranged up and down.

[0015] Furthermore, an assembly hole for fixedly connecting with the mounting part of the cylindrical grinding wheel frame is provided on the edge of the fixed base.

[0016] Furthermore, the winding driving wheel, the winding driven wheel and the guide wheel are distributed in a triangular shape on the outer side of the fixed vertical plate, and the guide wheel extends forward from the front end surface of the fixed vertical plate.

[0017] The beneficial effects of the present invention are:

[0018] Since the outer diameter of the rocker workpiece needs to be ground to the required size on the external cylindrical grinder and the surface roughness must be guaranteed to be Ra0.8, it is impossible to increase the surface roughness again by the grinding wheel. Therefore, it can only be further ultra-finished by using a polishing belt. However, it is difficult to operate the polishing belt to polish a cylindrical workpiece. Therefore, the present invention decides to utilize the working principle of the external cylindrical grinder and replace the original grinding wheel component device with the polishing belt assembly component, thereby realizing the function of polishing the outer diameter of the cylindrical workpiece on the external cylindrical grinder, and meeting the high requirements of the slide rod seat assembly on the surface roughness of the rocker cylinder when the slide rod seat assembly is running at high speed.

[0019] The present invention enables manufacturers to polish the outer diameter of a cylindrical workpiece in a relatively convenient manner and meet the requirements for roughness of the surface of the cylindrical workpiece. This not only enables manufacturers to sell a complete set of slide rod seat assemblies in groups, thereby increasing production profits, but also saves customers the trouble of self-super-finishing and assembly, thereby reducing the difficulty of use.

[0020] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the outer side of the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the inner side of the present invention;

[0024] Figure 3 It is a front view of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the rocker arm single workpiece in the slide seat assembly. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. The descriptions herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0027] See also Figure 1-3 As shown, a cylindrical workpiece surface super-finishing processing device comprises a fixed base 1, a fixed vertical plate 2 is arranged on the fixed base 1, a winding driving wheel 3, a winding driven wheel 4, a guide wheel 5, a tensioning cylinder 6, a guide wheel mounting support 15 and a polishing belt 7 are arranged on the outer side of the fixed vertical plate 2, and a driving driving wheel motor 8, a guide wheel mounting support swing motor 9, a reducer 10, a cam 11, a contact plate 12, a sliding rod 14 and a spring 13 are arranged on the inner side of the fixed vertical plate 2;

[0028] The driving wheel motor 8 and the reducer 10 are both fixedly connected to the inner side of the fixed vertical plate 2, the motor shaft of the driving wheel motor 8 is connected to the input end of the reducer 10, and the output end of the reducer 10 is connected to the winding driving wheel 3 after passing through the fixed vertical plate 2; the driving guide wheel installation support swing motor 9 is fixedly connected to the upper surface of the fixed base 1, and the motor shaft of the driving guide wheel installation support swing motor 9 is connected to the cam 11; the sliding rod 14 is slidably arranged on the fixed vertical plate 2, the inner end of the sliding rod 14 is fixedly connected to one surface of the contact plate 12, and the other surface of the contact plate 12 is in contact with the cam 11; the spring 13 is sleeved on the sliding rod 14, and one end of the spring 13 is connected to the fixed vertical plate 2. The plate 2 is in contact with the spring 13, and the other end of the spring 13 is in contact with the contact plate 12; the outer end of the sliding rod 14 passes through the fixed vertical plate 2 and is fixedly connected to the guide wheel mounting support 15, and the guide wheel 5 is movably arranged on the front surface of the guide wheel mounting support 15, and the tensioning cylinder 6 is fixedly connected to the rear surface of the guide wheel mounting support 15, and the telescopic rod of the tensioning cylinder 6 is fixedly connected to the guide wheel 5 inside the guide wheel mounting support 15; the winding driven wheel 4 is rotatably mounted on the outer side of the fixed vertical plate 2, and a coil for generating a certain rotational resistance is arranged inside the winding driven wheel 4, most of the polishing belt 7 is wound around the winding driven wheel 4, and the head of the polishing belt 7 is fixedly wound around the winding driving wheel 3 after passing around the guide wheel 5.

[0029] Furthermore, the driving wheel motor 8 is installed on the inner side surface of the fixed vertical plate 2 through the driving wheel motor fixing seat 16 .

[0030] Furthermore, the driving guide wheel mounting support swing motor 9 is mounted on the upper surface of the fixed base 1 through the driving guide wheel mounting support swing motor fixing seat 17 .

[0031] Furthermore, the guide wheel 5 is movably mounted on the front surface of the guide wheel mounting support 15 via a guide wheel mounting seat, and the rear portion of the guide wheel mounting seat extends into the guide wheel mounting support 15 and is fixedly connected to the telescopic rod of the tensioning cylinder 6 .

[0032] Furthermore, the clearance between the sliding rod 14 and the through hole on the fixed vertical plate 2 is 0.02 mm, so as to ensure that the guide wheel mounting support 15 swings smoothly and stably as a whole.

[0033] Furthermore, the guide wheel 5 is made of a hard plastic material with a certain elasticity.

[0034] Furthermore, the resistance value of the winding driven wheel 4 and the elasticity of the polishing belt 7 and the pressure of the tensioning cylinder 6 should be adjusted appropriately, and should be greater than the tensioning force of the tensioning cylinder 6 and within the allowable elastic range of the polishing belt 7.

[0035] Furthermore, two sliding rods 14 are provided on the fixed vertical plate 2, and the two sliding rods 14 are arranged up and down.

[0036] Furthermore, an assembly hole 18 for fixedly connecting with the mounting part of the cylindrical grinding wheel frame is provided on the edge of the fixed base 1 .

[0037] Furthermore, the winding driving wheel 3 , the winding driven wheel 4 and the guide wheel 5 are distributed in a triangular shape on the outer side of the fixed vertical plate 2 , and the guide wheel 5 extends forward from the front end surface of the fixed vertical plate 2 .

[0038] The working process of the cylindrical workpiece surface super-finishing treatment device is as follows:

[0039] The polishing device is installed as a whole to the installation position of the original grinding wheel frame of the outer cylindrical grinder through a fixed base 1. After power is turned on and ventilation is provided, the driving wheel motor 8 is driven to wind the polishing belt 7 at a very slow speed. Since there is a coil inside the winding driven wheel 4, a certain resistance can be generated. The tensioning cylinder 6 pushes the guide wheel 5 to move forward relative to the guide wheel mounting support 15 through the guide wheel mounting seat, thereby tensioning the polishing belt 7, and driving the guide wheel mounting support swing motor 9 to rotate by driving the cam 11 to push the contact plate 12 connected to the sliding rod 14 on the guide wheel mounting support 15. The contact plate 12 is closely matched with the cam 11 under the action of the spring 13, so that the guide wheel mounting support 15 drives the guide wheel 5 and the polishing belt 7 thereon to swing left and right at high speed as the cam 11 rotates; during the winding process of the winding driving wheel 3, the pulling force becomes larger and larger. When the pulling force exceeds the resistance of the winding driven wheel 4, the winding driven wheel 4 is loosened once. When the resistance setting is reached, the winding driving wheel 3 stops rotating. While the winding driving wheel 3 is being wound, the tensioning cylinder 6 always keeps the polishing belt 7 in a tensioned state.

[0040] In this process, the rocker single workpiece has its two ends pushed by the headstock thimble and tailstock thimble of the external cylindrical grinding headstock, and rotates with the external cylindrical grinding headstock. The polishing device approaches the outer diameter of the workpiece, and the polishing belt contacts the outer diameter of the rocker single workpiece to start the polishing operation. The retraction time is set according to the actual time that can ensure the surface roughness of the workpiece, and the workpiece is separated from the polishing belt to complete a polishing operation.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cylindrical workpiece surface ultra-finishing treatment device, characterized in that: The invention comprises a fixed base (1), on which a fixed vertical plate (2) is arranged, and the outer side of the fixed vertical plate (2) is provided with a winding driving wheel (3), a winding driven wheel (4), a guide wheel (5), a tensioning cylinder (6), a guide wheel mounting support (15) and a polishing belt (7), and the inner side of the fixed vertical plate (2) is provided with a driving wheel driving motor (8), a guide wheel mounting support swinging motor (9), a reducer (10), a cam (11), a contact plate (12), a sliding rod (14) and a spring (13); The driving wheel motor (8) and the reducer (10) are both fixedly connected to the inner side surface of the fixed vertical plate (2); the motor shaft of the driving wheel motor (8) is connected to the input end of the reducer (10); the output end of the reducer (10) passes through the fixed vertical plate (2) and is connected to the winding driving wheel (3); the driving guide wheel mounting support swing motor (9) is fixedly connected to the upper surface of the fixed base (1); the motor shaft of the driving guide wheel mounting support swing motor (9) is connected to the cam (11); the sliding rod (14) is slidably arranged on the fixed vertical plate (2); the inner end of the sliding rod (14) is fixedly connected to one surface of the contact plate (12), and the other surface of the contact plate (12) is in contact with the cam (11); the spring (13) is sleeved on the sliding rod (14), and one end of the spring (13) is in contact with the fixed vertical plate (2). The guide wheel (5) is arranged on the front surface of the guide wheel mounting support (15) so as to be movable forward and backward. The tensioning cylinder (6) is fixedly connected to the rear surface of the guide wheel mounting support (15). The telescopic rod of the tensioning cylinder (6) is fixedly connected to the guide wheel (5) inside the guide wheel mounting support (15). The winding driven wheel (4) is rotatably mounted on the outer surface of the fixed vertical plate (2). A coil for generating a certain rotation resistance is arranged inside the winding driven wheel (4). Most of the polishing belt (7) is wound on the winding driven wheel (4). The head of the polishing belt (7) is wound around the guide wheel (5) and then fixedly wound on the winding driving wheel (3). The edge of the fixed base (1) is provided with a mounting hole (18) for fixed connection with the mounting portion of the cylindrical grinding wheel frame; The winding driving wheel (3), the winding driven wheel (4) and the guide wheel (5) are distributed in a triangular shape on the outer side of the fixed vertical plate (2), and the guide wheel (5) extends forward from the front end surface of the fixed vertical plate (2).

2. The cylindrical workpiece surface super-finishing treatment device according to claim 1, characterized in that: The driving wheel motor (8) is mounted on the inner side surface of the fixed vertical plate (2) via a driving wheel motor fixing seat (16).

3. The cylindrical workpiece surface superfinishing treatment device according to claim 1, characterized in that: The driving guide wheel mounting support swing motor (9) is mounted on the upper surface of the fixed base (1) via a driving guide wheel mounting support swing motor fixing seat (17).

4. The cylindrical workpiece surface superfinishing treatment device according to claim 1, characterized in that: The guide wheel (5) is movably mounted on the front surface of the guide wheel mounting support (15) via a guide wheel mounting seat, and the rear portion of the guide wheel mounting seat extends into the guide wheel mounting support (15) and is fixedly connected to the telescopic rod of the tensioning cylinder (6).

5. The cylindrical workpiece surface superfinishing treatment device according to claim 1, characterized in that: The matching clearance between the sliding rod (14) and the through hole on the fixed vertical plate (2) is 0.02 mm.

6. The cylindrical workpiece surface superfinishing treatment device according to claim 1, characterized in that: The guide wheel (5) is made of elastic hard plastic material.

7. The cylindrical workpiece surface superfinishing treatment device according to claim 1, characterized in that: The resistance value of the winding driven wheel (4) is greater than the tensioning force of the tensioning cylinder (6), and is within the elastic allowable range of the polishing belt (7).

8. The cylindrical workpiece surface superfinishing treatment device according to claim 1, characterized in that: Two sliding rods (14) are provided on the fixed vertical plate (2), and the two sliding rods (14) are arranged up and down.

Images