CN217194451U

CN217194451U - Spherical surface processing equipment

Info

Publication number: CN217194451U
Application number: CN202220146515.2U
Authority: CN
Inventors: 傅海波; 戴建华; 周德华
Original assignee: Suzhou Changfeng Aviation Electronics Co Ltd
Current assignee: Suzhou Changfeng Aviation Electronics Co Ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-08-16
Anticipated expiration: 2032-01-19

Abstract

The utility model provides a sphere processing equipment, include: a fixing plate; the fixed bracket component is rotatably arranged on the fixed plate; the electric main shaft comprises a body and a rotating shaft, the body is fixedly arranged at the top of the fixed support component, the rotating shaft can rotate relative to the body, and the blank is fixed on the rotating shaft; and the grinding wheel is arranged towards the blank and can move up and down relative to the blank. The spherical surface processing equipment can process the fine shaft part with the spherical end surface and high dimensional accuracy requirement and surface roughness, and improves the processing efficiency and reduces the labor intensity to the maximum extent on the premise of meeting the part accuracy.

Description

Spherical surface processing equipment

Technical Field

The specification relates to the field of machining, in particular to spherical surface machining equipment.

Background

The fine shaft part is a part with the diameter of being thin (phi 1), the length of being long (5mm) and precision (the dimensional tolerance is 9um, and the surface roughness is Ra0.1). A tangent spherical surface is processed on the end face of a fine-axis part, the traditional machining method cannot meet the precision requirement, and the high-precision part is processed by a master with rich experience and is generally manufactured by hands, so that time and labor are wasted, and the efficiency and the qualification rate are low.

The common methods for spherical surface machining include turning and grinding, and the method for turning the spherical surface cannot meet the requirement for machining the spherical surface of the shaft tip due to the limitation of equipment and the size and precision requirements of the shaft tip. Firstly, considering that the method for controlling the track of the numerical control machine tool is interpolation, the turning tool approaches to the set track by adopting an interpolation method along the set track under the control of a program, and each interpolation point forms an inflection point on the track when being magnified, so that the turning tool mark of one circle is seen on the surface of the shaft tip turned by the numerical control machine tool under a magnifying glass of 100 times, and the turning tool mark is deeper when going to the top point of the spherical surface.

Another spherical surface processing method is grinding. Common spherical surface processing equipment such as a ball knife sharpener works according to the principle that a workpiece is fixed on a rotating spindle, and a grinding wheel rotates along the spherical center of the workpiece while rotating. The machining method requires that the grinding wheel spindle has enough supporting rigidity and high rotation precision, and in order to meet the feed requirement, the grinding wheel spindle needs to be provided with an axial movement mechanism. Therefore, the equipment meeting the requirements is very high in manufacturing cost, and the requirements can be met only by a precision universal grinding machine imported from foreign countries.

SUMMERY OF THE UTILITY MODEL

In view of this, embodiments of the present disclosure provide a spherical surface processing apparatus, so as to achieve the purpose of improving the processing efficiency and reducing the labor intensity to the greatest extent on the premise of meeting the precision of the part.

The embodiment of the specification provides the following technical scheme:

a spherical surface processing device is used for processing the hemispherical surface of a blank, and comprises:

a fixing plate;

the fixed bracket component is rotatably arranged on the fixed plate;

the electric main shaft comprises a body and a rotating shaft, the body is fixedly arranged at the top of the fixed support component, the rotating shaft can rotate relative to the body, and the blank is fixed on the rotating shaft;

and the grinding wheel is arranged towards the blank and can move up and down relative to the blank.

Further, the fixed support component comprises a support body and a pressing plate, the bottom of the support body is fixed on the fixing plate through a positioning pin, a groove used for containing the electric spindle is formed in the top of the support body, the pressing plate is fixed on the support body, and the pressing plate and the groove form a containing space used for containing the electric spindle.

Furthermore, the fixed support assembly further comprises a rotating plate and a crossed roller bearing, the support body is fixed on the upper surface of the rotating plate, and the rotating plate is rotatably connected with the fixed plate through the crossed roller bearing.

Further, the fixed bracket component also comprises a limiting device, the limiting device is fixed on the fixed plate and is positioned on the rotating path of the rotating plate, and the limiting device can be abutted against the rotating plate.

Furthermore, the fixed bracket component also comprises a hand crank, and one end of the hand crank is connected with the rotating plate.

Furthermore, the fixed bracket component also comprises a rotary driving motor, the rotary driving motor is fixed on the fixed plate and connected with the rotating plate, and the rotary driving motor can drive the rotating plate to rotate relative to the fixed plate.

Further, the spherical surface processing equipment also comprises a grinding machine guide rail, and the fixing plate can be arranged on the grinding machine guide rail in a sliding mode through the mounting groove.

Furthermore, one end of the rotating shaft is provided with a clamping part, and the blank is fixed on the rotating shaft through the clamping part.

Further, the axis of revolution of the motorized spindle intersects with the center axis of rotation of the crossed roller bearing.

Furthermore, the axis of the inner ring of the crossed roller bearing and the center of the hemispherical end of the blank are positioned on the same vertical line.

Compared with the prior art, the beneficial effects that can be achieved by the at least one technical scheme adopted by the embodiment of the specification at least comprise:

the machining efficiency is improved and the labor intensity is reduced to the greatest extent on the premise of meeting the precision of parts by machining the spherical fine shaft part with the end face. The device has the advantages of wide application range, high processing precision, capability of processing the spherical fine shaft with the end face with high dimensional precision requirement and surface roughness, simple structure, safe and reliable performance, low manufacturing cost and the like.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of the embodiment of the present invention;

FIG. 2 is a front view of an embodiment of the present invention;

fig. 3 is a top view of an embodiment of the present invention;

fig. 4 is an overall structure diagram of the embodiment of the present invention.

Description of reference numerals: 1. blank; 2. a rotating shaft; 301. pressing a plate; 302. a stent body; 303. positioning pins; 4. an electric spindle; 501. a crossed roller bearing; 502. rotating the plate; 503. a limiting device; 6. a fixing plate; 7. a hand crank; 8. a grinding wheel; 9. and (5) grinding the guide rail.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number and aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

The fine shaft part is processed, and the fine shaft part has the following characteristics:

thin (phi 1mm), long (5mm), fine (size tolerance 9um, surface roughness Ra0.1), and a tangent spherical surface is processed on the end surface. The traditional mechanical processing method cannot meet the precision requirement of parts, and the parts with high precision are processed by pure hands of an experienced master and have the advantages of time and labor waste and low efficiency and qualified rate.

The technical solutions provided by the embodiments of the present application are described below with reference to the accompanying drawings.

Fig. 1, 2, 3 and 4 show an embodiment of the present invention, in which the blank 1 is rotated manually.

As shown in fig. 1, 2 and 4, the spherical surface processing apparatus is composed of a rotating shaft 2, a bracket body 302, a pressing plate 301, a positioning pin 303, an electric spindle 4, a crossed roller bearing 501, a rotating plate 502, a limiting device 503, a fixing plate 6, a crank 7 and a grinding wheel 8.

The bottom of the spherical surface processing equipment is provided with a fixing plate 6. The stationary bracket assembly is rotatably disposed on the stationary plate 6. Electric main shaft 4 includes body and pivot 2, and electric main shaft 4 is fixed at fixed support subassembly top. The blank 1 to be processed is fixed on the rotating shaft 2 through a clamping part on the rotating shaft 2. The grinding wheel 8 faces the blank 1 and can move up and down relative to the blank 1 to be processed. The blank 1 to be processed is fixed on the rotatable fixed support component, so that the blank 1 can rotate relative to the grinding wheel 8.

The stationary bracket assembly includes a bracket body 302 and a pressure plate 301. The top of the bracket body 302 is provided with a groove for accommodating the electric spindle 4, the pressing plate 301 is fixed on the bracket body 302, and the pressing plate 301 and the groove form an accommodating space for accommodating the electric spindle 4. This construction enables the motorized spindle 4 to be firmly fixed to the stationary bracket assembly.

Referring to fig. 3, the bottom of the bracket body 302 is fixed to the fixing plate 6 by a plurality of positioning pins 303, so that the bracket body 302 is firmly fixed to the fixing plate 6.

The fixed bracket assembly comprises a rotating plate 502 and a crossed roller bearing 501, the bracket body 302 is fixed on the upper surface of the rotating plate 502, and the rotating plate 502 is rotatably connected with the fixed plate 6 through the crossed roller bearing 501. The rotating plate 502 is rotated relative to the fixed plate 6 by means of cross roller bearings 501. The stopper 503 is fixed to the fixed plate 6 and is located on the rotation path of the rotating plate 502. The stopper 503 abuts against the rotating plate 502 to limit the rotation range of the rotating plate 502. The hand crank 7 is connected with the rotating plate 502 through threads, and the rotating plate 502 is rotated through manual shaking, so that the rotating plate 502 rotates in a reciprocating manner within a 90-degree range to drive the blank 1 fixed on the electric spindle 4 to rotate in a reciprocating manner.

The spherical surface processing equipment needs to be matched with a surface grinder for use, and the installation schematic diagram is shown in figure 4. Mounting grooves are processed on two side surfaces of the fixing plate 6 and are used for being connected with a grinding machine guide rail 9 of the surface grinding machine. The grinding wheel 8 is arranged on the tool grinding machine and can be adjusted up and down and back and forth, and the grinding amount of each time can be controlled by adjusting the scale of the handle.

During machining, the grinding machine guide rail 9 drives the whole spherical surface machining equipment to move back and forth towards the direction of the grinding wheel 8, and the rotating plate 502 rotates within the range of 90 degrees to grind the shaft tip spherical surface of the blank 1. When the rotating plate 502 rotates to 90 degrees, the effective width of the grinding wheel 8 can grind the cylindrical surface of the shaft tip of the blank 1 at the same time, and smooth transition between the spherical surface and the cylindrical surface is ensured. The distance D between the rotation center of the rotating plate 502 of the spherical surface processing equipment and the edge of the grinding wheel 8 is the radius value of the ground spherical surface. When the ball surface of the toe is ground, the grinding machine guide 9 is moved so that the toe is gradually brought close to the grinding wheel 8, and at the same time, the rotating plate 502 is rotated to reciprocate within a range of 90 degrees, and when D is equal to r (toe radius), the toe grinding is completed.

The main technical indexes of the embodiment are as follows:

1. the radial dynamic run-out error of the electric main shaft 4 is not more than 0.003mm, and the axial dynamic play-out error is not more than 0.002 mm;

2. the rotation precision of the bearing of the crossed roller bearing 501 is not more than 0.002 mm;

3. the axis of the motorized spindle 4 (i.e., the axis of the shaft tip) and the rotation center of the cross roller bearing 501 must intersect in space;

4. the axis of the inner ring of the crossed roller bearing 501 and the center of the hemispherical end of the blank 1 are positioned on the same vertical line.

The present embodiment uses the following matters to be noted:

1. when the equipment is installed, the height of the grinding wheel 8 of the grinding machine is adjusted to ensure that the center of the grinding wheel 8 is equal to the shaft axis of the blank 1 in height;

2. the rotating plate 502 should rotate at a constant speed and a moderate speed;

3. the limiting device 503 is adjusted to ensure that the rotation angle of the rotating plate 502 is within a proper range;

4. selecting a grinding wheel 8 with proper granularity according to the requirement of the roughness of the shaft tip surface of the blank 1;

5. through tests, proper spindle rotation speed, grinding wheel variety and granularity are found out according to the precision requirement of the processed parts.

In another embodiment, the rotation plate 502 can also be rotated by mechanical force.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on differences from other embodiments. In particular, for the method embodiments described later, since they correspond to the system, the description is simple, and for the relevant points, reference may be made to the partial description of the system embodiments.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a sphere processing equipment for the hemisphere face of processing blank (1), its characterized in that includes:

a fixed plate (6);

the fixed bracket component is rotatably arranged on the fixed plate (6);

the electric spindle (4) comprises a body and a rotating shaft (2), the body is fixedly arranged at the top of the fixed support component, the rotating shaft (2) can rotate relative to the body, and the blank (1) is fixed on the rotating shaft (2);

and the grinding wheel (8) is arranged towards the blank (1) and can move up and down relative to the blank (1).

2. The spherical surface processing equipment according to claim 1, wherein the fixed bracket assembly comprises a bracket body (302) and a pressure plate (301), the bottom of the bracket body (302) is fixed on the fixed plate (6) through a positioning pin (303), the top of the bracket body (302) is provided with a groove for accommodating the electric spindle (4), the pressure plate (301) is fixed on the bracket body (302), and the pressure plate (301) and the groove form an accommodating space for accommodating the electric spindle (4).

3. The spherical surface processing equipment according to the claim 2, characterized in that the fixed bracket assembly further comprises a rotating plate (502) and a cross roller bearing (501), the bracket body (302) is fixed on the upper surface of the rotating plate (502), and the rotating plate (502) is rotatably connected with the fixed plate (6) through the cross roller bearing (501).

4. A spherical machining apparatus according to claim 3, characterized in that the stationary bracket assembly further comprises a limiting device (503), the limiting device (503) being fixed to the stationary plate (6) and located in the path of rotation of the rotating plate (502), the limiting device (503) being capable of abutting against the rotating plate (502).

5. Spherical surface machining equipment according to claim 4, characterized in that the fixed bracket assembly further comprises a hand crank (7), one end of the hand crank (7) being connected with the rotating plate (502).

6. A spherical surface working apparatus according to claim 4, characterized in that the stationary bracket assembly further comprises a rotary drive motor fixed to the stationary plate (6) and connected to the rotary plate (502), the rotary drive motor being capable of driving the rotary plate (502) to rotate relative to the stationary plate (6).

7. A sphere machining apparatus according to claim 1, characterized in that it further comprises a grinder rail (9), the fixing plate (6) being slidably arranged on the grinder rail (9) through the mounting groove.

8. Spherical surface processing equipment according to claim 1, characterized in that one end of the rotating shaft is provided with a clamping part, and the blank (1) is fixed on the rotating shaft through the clamping part.

9. A spherical-surface working apparatus according to claim 3, wherein the axis of revolution of the motorized spindle (4) intersects the central axis of rotation of the crossed roller bearing (501).

10. A spherical-surface working apparatus according to claim 1, characterized in that the axis of the inner ring of the crossed roller bearing (501) is on the same vertical line as the center of the hemispherical end of the blank (1).