CN111168477A - Precision grinding tool and process for quartz glass ball parts - Google Patents
Precision grinding tool and process for quartz glass ball parts Download PDFInfo
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- CN111168477A CN111168477A CN202010003800.4A CN202010003800A CN111168477A CN 111168477 A CN111168477 A CN 111168477A CN 202010003800 A CN202010003800 A CN 202010003800A CN 111168477 A CN111168477 A CN 111168477A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
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- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to a precision grinding tool and a precision grinding process for a quartz glass semispherical part, wherein the tool consists of a radial alignment device, an axial alignment device and a bonding tool, the process optimizes the existing process flow, separates the rough machining process and the finish machining process of a semispherical harmonic oscillator, and can obviously improve the grinding machining precision of the part. The invention creatively applies the common numerical control grinding method to the precision machining of the hemispherical harmonic oscillator, ensures the reference consistency of rough machining and finish machining, improves the grinding machining precision of the hemispherical harmonic oscillator, expands the machining range of a machine tool and has good popularization value by designing a special tool and optimizing the process flow.
Description
Technical Field
The invention belongs to the technical field of precision machining, and relates to a quartz glass ball part, in particular to a precision grinding tool and a precision grinding process for a quartz glass semispherical part.
Background
The hemispherical gyroscope harmonic oscillator is a core component of a hemispherical resonator gyroscope, belongs to quartz glass ball parts, and is manufactured by adopting fused quartz glass when a high-precision gyroscope is developed, referring to fig. 1. Because the wall thickness of the hemispherical harmonic oscillator is very small and the hard and brittle materials of fused quartz glass are difficult to process, the precision forming and processing technology of the hemispherical gyroscope harmonic oscillator is a bottleneck which restricts the development of the hemispherical gyroscope harmonic oscillator.
The existing forming process method of the hemispherical harmonic oscillator generally adopts a milling or rotary ultrasonic machining method, and because the equipment can be simultaneously provided with a plurality of cutters for rough machining and finish machining, the precision forming machining of the hemispherical harmonic oscillator can be basically realized by once clamping. However, in the conventional grinding equipment, at most 2-3 grinding wheels can be installed at one time, and the grinding wheels are worn to a certain extent when the material part is machined, so that only semi-finishing of the harmonic oscillator can be performed, and precise grinding of the hemispherical quartz harmonic oscillator is difficult to realize. The problem of precise alignment exists in the machining scheme of coarse grinding and fine grinding, so that the precision machining of the hemispherical harmonic oscillator by the grinding scheme has certain difficulty.
Through the search of the published patent documents, only one published patent document relevant to the present application is found as follows:
a processing device and a processing method (cn109483394A) for the ultra-precise spherical surface of a hemispherical harmonic oscillator comprise an ultra-precise processing device for the inner spherical surface of the hemispherical harmonic oscillator, a hemispherical harmonic oscillator embedding method and related devices, a spherical shell opening inverted inner spherical surface angle device, an outer spherical surface chamfer indicating device, an inner spherical surface chamfer indicating device and a supporting rod self-adaptive elastic grinding head device, wherein the processing method comprises the following steps: step 1, a precision spherical surface processing method; step 2, various parameter combination sequence methods; step 3, a design method of a precision spherical surface processing grinding head and a control method of the material and the granularity of the grinding agent; step 4, a control method of elastic loading force for micro-stress spherical surface precision machining; step 5, a hemisphere harmonic oscillator encapsulation method; step 6, a precision measurement method of the hemispherical harmonic oscillator comprises a true sphericity measurement method and a coaxial measurement method; step 7, chamfering the opening of the spherical shell and rounding the support rod R; and 8, a using method of the self-adaptive elastic grinding head of the supporting rod.
Through technical comparison and analysis, the applicant thinks that the structure and the processing mode of the tool are greatly different from those of the invention application, so that the creativity and the novelty of the invention application are not damaged.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a precise grinding tool and a precise grinding process for quartz glass semispherical parts.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a precision grinding frock of quartz glass hemisphere class part, comprises radial aligning device, axial aligning device and bonding frock, radial aligning device comprises fixing base, go-between and radial alignment board, axial aligning device comprises axial alignment board and radial clamping device, the bonding frock is made by technology handle and bonding head integration coaxial, and its connection structure is: the fixing seat of the radial alignment device and the radial alignment plate are respectively and coaxially embedded into the connecting ring, radial adjustment and positioning are carried out by adopting screws, and an axial mounting plate manufactured by the axial alignment plate of the axial alignment device is coaxially connected with a radial mounting hole of the radial alignment plate, so that the connection of the axial alignment device and the axial alignment device is realized; and a process handle of the bonding tool is coaxially installed in a bonding tool installation hole of the axial alignment device in a bonding mode, and is fastened by adopting a radial clamping device, so that the installation and connection of the whole tool are realized.
Moreover, a fixed seat of the radial alignment device is a part for connecting a machine tool and an alignment part, and a mounting handle is coaxially arranged at the left end of the fixed seat and is used for connecting a main shaft of the machine tool; the right end of the fixed seat is provided with a mounting disc, the flatness of the mounting surface of the mounting disc is not more than 0.002mm, the middle part of the mounting disc is provided with a blank cutter surface to ensure the flatness requirement of the mounting surface, and radial connecting threaded holes for fixing the connecting ring are uniformly distributed in the radial direction of the mounting disc at intervals; axial connecting threaded holes are uniformly distributed in the axial direction of the mounting disc at intervals and are used for connecting the radial alignment plate;
the connecting ring of the radial alignment device is a component for connecting the fixing seat and the radial alignment plate and is of a circular ring structure, an inner ring and an outer ring are coaxially manufactured in an inner hole of the connecting ring, and the inner ring and the outer ring are in a step shape and are respectively used for coaxially connecting the fixing seat and the radial alignment plate. Radial connecting thread through holes are uniformly and uniformly arranged at intervals on the outer cylindrical surface of the connecting ring corresponding to the inner ring and the outer ring, radial adjusting thread holes are also uniformly and uniformly arranged at intervals on the outer cylindrical surface of the connecting ring corresponding to the outer ring, the radial connecting thread through holes adopt fixing screws to connect the connecting ring with the fixed seat, and the radial adjusting thread holes adopt adjusting screws for installing a radial aligning plate;
the radial alignment plate of the radial alignment device is of a disc-shaped structure provided with a radial mounting hole, wherein a blank cutter face is processed in the middle of the left end face to ensure the flatness requirement, the left end face is closely attached to the corresponding end face of the fixed seat, and the flatness of the left end face is not more than 0.002 mm; outer connecting threaded holes for connecting the radial alignment plate and the fixed seat are uniformly distributed on the outer side of the blank cutter surface of the radial alignment plate at intervals; the inner connection threaded holes are axially and uniformly distributed on the blank cutter face at intervals and used for connecting the axial alignment plate and the radial alignment plate, and the radial mounting holes are used for radial coarse positioning of the axial alignment plate.
The axial alignment plate of the axial alignment device is of a disc-shaped structure, a bonding tool mounting hole is fixedly arranged at the central shaft position of the front face of the axial alignment plate and used for clamping a bonding tool process handle, an axial mounting plate concentric with the axial alignment plate is arranged on the back face of the axial alignment plate, the excircle of the axial mounting plate is matched with the radial mounting hole formed in the radial alignment plate, and an axial connecting thread one through hole, an axial connecting thread two through hole and an axial adjusting threaded hole are respectively formed in the edge position of the axial alignment plate, wherein the axial connecting thread one through hole is used for mounting an axial connecting screw one, the axial connecting thread two through hole is used for mounting an axial connecting screw two, and the axial adjusting threaded hole is used for mounting an axial alignment screw;
the radial clamping device of the axial alignment device consists of a clamping ring and a locking screw and is used for fastening after a process handle of the bonding tool is installed in a mounting hole of the bonding tool.
Moreover, the bonding tool is integrally and coaxially manufactured by a process handle and a bonding head, and the size of the excircle of the process handle is the same as that of the mounting hole of the bonding tool; the bonding head is coaxially provided with a positioning inner hole which is used for ensuring the radial coarse positioning of the harmonic oscillator, and the bottom of the positioning inner hole is provided with a glue groove.
A precision grinding process for quartz glass semispherical parts comprises the following steps:
firstly, mounting a harmonic oscillator blank on a bonding tool through a bonding method, then clamping and bonding a technological handle of the tool by using a common grinding machine to finish rough machining of harmonic oscillators, and performing the next step after finishing rough machining of the used harmonic oscillators;
⑵, the fixed seat and the connecting ring are connected together by adopting radial connecting screws;
the radial alignment plate is connected with the device through axial connecting screws by virtue of external connecting threaded holes uniformly distributed at intervals on the outer side of the hollow cutter surface of the radial alignment plate, and the radial alignment screws are arranged in corresponding radial adjusting threaded holes of the connecting ring;
fourthly, mounting handles of the spring chuck clamping fixing seats are adopted, and radial rough adjustment alignment is conducted on radial mounting holes of the radial alignment plates through radial adjusting screws;
⑸, connecting the axial alignment plate with the device through axial connecting screws in the internal connecting threaded holes in the hollow tool face of the radial alignment plate, installing the axial alignment screws in corresponding axial adjusting threaded holes of the axial alignment plate, and then installing the radial clamping device on corresponding outer circles of the axial alignment plate;
installing a bonding tool in a bonding tool installation hole of the axial alignment plate, and clamping the part by using a radial clamping device;
axial connecting screws installed in the inner connecting threaded holes and the outer connecting threaded holes of the radial aligning plate are fastened so as to ensure that the radial aligning plate and the axial aligning plate are not loosened;
adjusting an axial alignment screw in an axial adjustment threaded hole formed in the axial alignment plate, aligning in the axial direction, wherein the runout is not more than 0.01, and ensuring that the axial alignment plate is in a fastening state by utilizing the elastic deformation of the screw;
the self-supporting is used for radially aligning the part by adjusting a radial alignment screw in a radial adjustment threaded hole of a radial alignment plate, the jump is not more than 0.01, and the radial alignment plate is ensured to be in a fastening state by utilizing the elastic deformation of the screw;
the semi-finish grinding processing of the harmonic oscillator is carried out by adopting the outer circle grinding wheel and the ball head grinding wheel, and when 0.02 allowance is respectively reserved on the inner spherical surface and the outer spherical surface, the bonding tool and the harmonic oscillator are taken down;
repeating the steps (6) to (10) to perform semi-finishing on the next part;
after semi-finish machining of all harmonic oscillators is completed, an outer circle grinding wheel and a ball head grinding wheel for precision machining are replaced, the steps (6) - (9) are repeated to clamp and align the parts, radial runout and axial runout are not larger than 0.002, final precision grinding machining of the parts is completed, then the bonding tool and the harmonic oscillators are taken down, and the steps (6) - (9) are repeated to complete precision alignment and grinding machining of all harmonic oscillators.
and (5) cutting off the process handle by adopting a grinding method to obtain the final finish machining of the harmonic oscillator.
Moreover, the head of the radial alignment screw and the head of the axial alignment screw are spherical.
The invention has the advantages and positive effects that:
1. the invention optimizes the prior process flow, separates the rough machining process and the finish machining process of the hemispherical harmonic oscillator, and can obviously improve the grinding machining precision of parts.
2. The special tool is precise and ingenious in design, can achieve consistency of rough and finish machining references of the hemispherical harmonic oscillators, reduces removal allowance of finish machining, and further guarantees machining precision.
3. The invention creatively applies the common numerical control grinding method to the precision machining of the hemispherical harmonic oscillator, ensures the reference consistency of rough machining and finish machining, improves the grinding machining precision of the hemispherical harmonic oscillator, expands the machining range of a machine tool and has good popularization value by designing a special tool and optimizing the process flow.
Drawings
Fig. 1 is a schematic perspective view of a hemispherical gyroscope harmonic oscillator product;
FIG. 2 is a perspective view of the fixing base of the radial alignment device of the present invention;
FIG. 3 is a perspective view of the attachment ring of the radial alignment device of the present invention;
FIG. 4 is a schematic perspective view of a radial alignment plate of the radial alignment apparatus of the present invention;
FIG. 5 is a schematic perspective view of the radial alignment apparatus of the present invention;
FIG. 6 is a schematic perspective view of an axial alignment plate of the axial alignment apparatus of the present invention;
FIG. 7 is a schematic perspective view of another angle of FIG. 6;
FIG. 8 is a perspective view of the radial clamping mechanism of the axial alignment device of the present invention;
FIG. 9 is a schematic perspective view of the axial alignment device of the present invention;
FIG. 10 is a schematic perspective view of the bonding tool of the present invention;
FIG. 11 is a schematic diagram of a bonding three-dimensional structure of a hemispherical gyroscope resonator blank on a bonding tool according to the present invention;
FIG. 12 is a schematic diagram of rough machining of an inner hole of a harmonic oscillator according to the present invention;
FIG. 13 is a schematic diagram of rough machining of the outer circle of a harmonic oscillator of the present invention;
fig. 14 is a schematic view of a rough harmonic oscillator product of the present invention;
FIG. 15 is a perspective view of an axial alignment screw or a radial alignment screw of the present invention;
FIG. 16 is a schematic combined perspective view of the precision grinding tool of the present invention;
fig. 17 is a schematic view of a semi-finished clamping structure of the harmonic oscillator of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings; the present examples are illustrative and not restrictive, and the scope of the invention is not limited thereto.
The invention takes a quartz glass hemisphere part, namely a hemispherical gyro harmonic oscillator as a typical example to carry out the description of the embodiment.
A precise grinding tool for quartz glass semispherical parts comprises a radial alignment device, an axial alignment device and a bonding tool.
Firstly, radial alignment device: referring to fig. 2, the device is composed of a fixed seat, a connecting ring and a radial alignment plate. The structure of the fixing base, the connecting ring and the radial alignment plate will be described below.
1. The fixed seat is a part for connecting a machine tool and an alignment component, and referring to fig. 2, a mounting handle 1 is coaxially arranged at the left end of the fixed seat and is used for connecting a main shaft of the machine tool; the right end system of fixing base has installation disc 4, for the precision of guaranteeing radial alignment, and the flatness of the installation face of installation disc is not more than 0.002mm, and mid portion processing blank knife face is in order to guarantee the flatness requirement of installation face. Radial connecting threaded holes 2 are uniformly distributed in the radial direction of the mounting disc at intervals and used for fixing the connecting ring; axial connecting threaded holes 3 are uniformly distributed in the axial direction of the mounting disc at intervals and are used for connecting the radial alignment plate.
2. The connecting ring is a component for connecting the fixing seat and the radial alignment plate, and is of a circular ring structure, referring to fig. 3, an inner ring 5 and an outer ring 6 are coaxially formed in an inner hole of the connecting ring, and the inner ring and the outer ring are in a step shape and are respectively used for coaxially connecting the fixing seat and the radial alignment plate. Radial connecting thread through holes 8 and 9 are respectively formed at uniformly distributed intervals on the outer cylindrical surface of the connecting ring corresponding to the inner ring and the outer ring, radial adjusting thread holes 7 are respectively formed at uniformly distributed intervals on the outer cylindrical surface of the connecting ring corresponding to the outer ring, the radial connecting thread through holes adopt fixing screws to connect the connecting ring with the fixing seat, and the radial adjusting thread holes adopt adjusting screws to install a radial alignment plate.
3. The radial alignment plate mainly plays a role in radial alignment and fixing the axial alignment plate, and is a disc-shaped structure provided with a radial mounting hole 12, see fig. 4, wherein a blank cutter 11 is processed in the middle of the left end face to ensure the flatness requirement, the left end face is tightly attached to the corresponding end face of the fixed seat, and the flatness of the left end face is not more than 0.002 mm; outer connecting threaded holes 10 are uniformly distributed on the outer side of the blank cutter surface of the radial alignment plate at intervals and are used for connecting the radial alignment plate and the fixed seat; inner connecting threaded holes 13 are axially and uniformly distributed on the blank cutter face at intervals and used for connecting the axial alignment plate and the radial alignment plate, and the radial mounting holes are used for radial coarse positioning of the axial alignment plate.
The assembly of the fixing seat and the radial alignment plate in the connecting ring is shown in fig. 5, and the connection manner is already described when describing the component structure, and is not described again here.
And the axial alignment device consists of an axial alignment plate and a radial clamping device.
1. The axial alignment plate plays a role in axial alignment and part fixing and is of a disc-shaped structure, and the axial alignment plate is shown in figures 6 and 7. A bonding tool mounting hole 16 is fixedly arranged at the front middle shaft part of the axial alignment plate and used for clamping bonding tool process handles, and the hole and the bonding tool process handle corresponding to the excircle belong to flexible sizes and are adjustable in size and used for clamping bonding tools with different excircle sizes. An axial mounting plate 18 concentric with the axial alignment plate is formed on the back surface of the axial alignment plate, and the outer circle of the axial mounting plate is matched with the radial mounting hole formed on the radial alignment plate. The edge part of the axial alignment plate is respectively provided with an axial connecting thread I through hole 14, an axial connecting thread II through hole 15 and an axial adjusting threaded hole 17, wherein the axial connecting thread I through hole is used for installing an axial connecting screw I, the axial connecting thread II through hole is used for installing an axial connecting screw II, and the axial adjusting threaded hole is used for installing an axial alignment screw.
2. The radial clamping device is used for fastening after the technical handle of the bonding tool is installed in the mounting hole of the bonding tool, and the radial clamping device is shown in fig. 9. The radial clamping device consists of a clamping ring and a locking screw, and referring to fig. 8, the sizes of an inner hole and an outer circle of the radial clamping device belong to flexible sizes, the sizes of the inner hole and the outer circle are adjustable, and the radial clamping device is correspondingly adjusted according to the size of a technological handle of the bonding tool.
Thirdly, bonding the tool, and referring to fig. 10. The technical handle 19 and the bonding head 21 are coaxially manufactured integrally, and the size of the excircle of the technical handle is the same as that of the mounting hole of the bonding tool; a positioning inner hole is coaxially formed in the bonding head and used for ensuring radial coarse positioning of the harmonic oscillator, and a rubber groove 20 is formed in the bottom of the positioning inner hole; the outer end face of the adhesive joint is used for ensuring the axial coarse positioning of the harmonic oscillator, and the glue groove is used for storing glue for bonding, so that the firm bonding of parts is ensured.
The fixed seat and the radial alignment plate of the radial alignment device are respectively and coaxially embedded into the inner ring and the outer ring of the connecting ring, various screws are adopted for radial adjustment and positioning, and the axial mounting plate manufactured by the axial alignment plate of the axial alignment device is coaxially connected with the radial mounting hole of the radial alignment plate, so that the connection between the axial alignment device and the axial alignment device is realized; and coaxially installing a process handle of the bonding tool in a bonding tool installation hole of the axial alignment device in a bonding mode, and fastening by adopting a radial clamping device, namely, realizing the installation and connection of the whole tool, and referring to fig. 15.
A precision grinding process for quartz glass semispherical parts comprises the following steps:
firstly, mounting a harmonic oscillator blank on a bonding tool through a bonding method, as shown in fig. 11, clamping and bonding a bonding tool process handle by using a common grinding machine to finish rough machining of a harmonic oscillator, as shown in fig. 12 and 13, wherein the precision of an inner hole and an outer circle of the harmonic oscillator is lower than the precision requirement of the original drawing, and a margin is left;
⑵, the fixed seat and the connecting ring are connected together by adopting radial connecting screws;
the radial alignment plate is connected with the device through axial connecting screws by virtue of external connecting threaded holes uniformly distributed on the outer side of the hollow cutter surface of the radial alignment plate at intervals, the radial alignment screws are arranged in corresponding radial adjusting threaded holes of the connecting ring, and in order to ensure the adjusting precision, eight radial alignment screws are required to be arranged, the heads of the screws are required to be spherical, and the reference figure 14 is shown.
fourthly, mounting handles of the spring chuck clamping fixing seats are adopted, and radial rough adjustment alignment is conducted on radial mounting holes of the radial alignment plates through radial adjusting screws;
⑸, connecting the axial aligning plate with the device through an axial connecting screw in an internal connecting threaded hole in the hollow tool face of the radial aligning plate, installing the axial aligning screw in a corresponding axial adjusting threaded hole of the axial aligning plate, and then installing a radial clamping device on a corresponding excircle of the axial aligning plate, wherein as shown in fig. 15, the assembling schematic diagram of the whole precision grinding tool is shown, and the axial aligning screw and the radial aligning screw are identical in structure;
sixthly, mounting the bonding tool in a bonding tool mounting hole of the axial alignment plate, and clamping the part by using a radial clamping device, wherein the radial clamping device is shown in fig. 17;
axial connecting screws installed in the inner connecting threaded holes and the outer connecting threaded holes of the radial aligning plate are fastened so as to ensure that the radial aligning plate and the axial aligning plate are not loosened;
adjusting an axial alignment screw in an axial adjustment threaded hole formed in the axial alignment plate, performing alignment in the axial direction, wherein the runout is not more than 0.01, and at the moment, the axial alignment plate is ensured to be in a fastening state by utilizing the elastic deformation of the screw;
the self-supporting is used for radially aligning the part by adjusting a radial aligning screw in a radial adjusting threaded hole of a radial aligning plate, the jumping is not more than 0.01, and at the moment, the radial aligning plate is ensured to be in a fastening state by utilizing the elastic deformation of the screw;
the harmonic oscillator semi-finish grinding processing method has the advantages that the outer circle grinding wheel and the ball head grinding wheel are adopted for semi-finish grinding processing of the harmonic oscillator, and the bonding tool and the harmonic oscillator are taken down when 0.02 allowance is reserved on the inner spherical surface and the outer spherical surface respectively;
and (5) repeating the steps (6) to (10) to perform semi-finishing on the next part.
after semi-finish machining of all harmonic oscillators is completed, an outer circle grinding wheel and a ball head grinding wheel for precision machining are replaced, the steps (6) - (9) are repeated to clamp and align the parts, radial runout and axial runout are not larger than 0.002, final precision grinding machining of the parts is completed, then the bonding tool and the harmonic oscillators are taken down, and the steps (6) - (9) are repeated to complete precision alignment and grinding machining of all harmonic oscillators.
and (5) cutting off the process handle by adopting a grinding method to obtain the final finish machining of the harmonic oscillator.
Claims (6)
1. The utility model provides a precision grinding frock of quartz glass hemisphere class part which characterized in that: the bonding tool is composed of a radial alignment device, an axial alignment device and a bonding tool, wherein the radial alignment device is composed of a fixed seat, a connecting ring and a radial alignment plate, the axial alignment device is composed of an axial alignment plate and a radial clamping device, the bonding tool is integrally and coaxially manufactured by a process handle and a bonding head, and the connection structure is as follows: the fixing seat of the radial alignment device and the radial alignment plate are respectively and coaxially embedded into the connecting ring, radial adjustment and positioning are carried out by adopting screws, and an axial mounting plate manufactured by the axial alignment plate of the axial alignment device is coaxially connected with a radial mounting hole of the radial alignment plate, so that the connection of the axial alignment device and the axial alignment device is realized; and a process handle of the bonding tool is coaxially installed in a bonding tool installation hole of the axial alignment device in a bonding mode, and is fastened by adopting a radial clamping device, so that the installation and connection of the whole tool are realized.
2. The precision grinding tool for the quartz glass semispherical parts according to claim 1, characterized in that: the left end of the fixed seat is coaxially provided with a mounting handle which is used for connecting a machine tool spindle; the right end of the fixed seat is provided with a mounting disc, the flatness of the mounting surface of the mounting disc is not more than 0.002mm, the middle part of the mounting disc is provided with a blank cutter surface to ensure the flatness requirement of the mounting surface, and radial connecting threaded holes for fixing the connecting ring are uniformly distributed in the radial direction of the mounting disc at intervals; axial connecting threaded holes are uniformly distributed in the axial direction of the mounting disc at intervals and are used for connecting the radial alignment plate;
the connecting ring of the radial alignment device is a component for connecting the fixing seat and the radial alignment plate and is of a circular ring structure, an inner ring and an outer ring are coaxially manufactured in an inner hole of the connecting ring, and the inner ring and the outer ring are in a step shape and are respectively used for coaxially connecting the fixing seat and the radial alignment plate. Radial connecting thread through holes are uniformly and uniformly arranged at intervals on the outer cylindrical surface of the connecting ring corresponding to the inner ring and the outer ring, radial adjusting thread holes are also uniformly and uniformly arranged at intervals on the outer cylindrical surface of the connecting ring corresponding to the outer ring, the radial connecting thread through holes adopt fixing screws to connect the connecting ring with the fixed seat, and the radial adjusting thread holes adopt adjusting screws for installing a radial aligning plate;
the radial alignment plate of the radial alignment device is of a disc-shaped structure provided with a radial mounting hole, wherein a blank cutter face is processed in the middle of the left end face to ensure the flatness requirement, the left end face is closely attached to the corresponding end face of the fixed seat, and the flatness of the left end face is not more than 0.002 mm; outer connecting threaded holes for connecting the radial alignment plate and the fixed seat are uniformly distributed on the outer side of the blank cutter surface of the radial alignment plate at intervals; the inner connection threaded holes are axially and uniformly distributed on the blank cutter face at intervals and used for connecting the axial alignment plate and the radial alignment plate, and the radial mounting holes are used for radial coarse positioning of the axial alignment plate.
3. The precision grinding tool for the quartz glass semispherical parts according to claim 1, characterized in that: the axial alignment plate of the axial alignment device is of a disc-shaped structure, a bonding tool mounting hole is fixedly arranged at the central shaft position in the front of the axial alignment plate and used for clamping a bonding tool process handle, an axial mounting plate concentric with the axial alignment plate is arranged on the back of the axial alignment plate, the excircle of the axial mounting plate is matched with the radial mounting hole formed in the radial alignment plate, and an axial connecting thread I through hole, an axial connecting thread II through hole and an axial adjusting threaded hole are respectively formed in the edge position of the axial alignment plate, wherein the axial connecting thread I through hole is used for mounting an axial connecting screw I, the axial connecting thread II through hole is used for mounting an axial connecting screw II, and the axial adjusting threaded hole is used for mounting an axial alignment screw II;
the radial clamping device of the axial alignment device consists of a clamping ring and a locking screw and is used for fastening after a process handle of the bonding tool is installed in a mounting hole of the bonding tool.
4. The precision grinding tool for the quartz glass semispherical parts according to claim 1, characterized in that: the bonding tool is integrally and coaxially manufactured by a process handle and a bonding head, and the size of the excircle of the process handle is the same as that of the mounting hole of the bonding tool; the bonding head is coaxially provided with a positioning inner hole which is used for ensuring the radial coarse positioning of the harmonic oscillator, and the bottom of the positioning inner hole is provided with a glue groove.
5. A precision grinding process adopting the precision grinding tool for quartz glass semispherical parts according to claim 1, characterized in that: the method comprises the following steps:
firstly, mounting a harmonic oscillator blank on a bonding tool through a bonding method, then clamping and bonding a technological handle of the tool by using a common grinding machine to finish rough machining of harmonic oscillators, and performing the next step after finishing rough machining of the used harmonic oscillators;
⑵, the fixed seat and the connecting ring are connected together by adopting radial connecting screws;
the radial alignment plate is connected with the device through axial connecting screws by virtue of external connecting threaded holes uniformly distributed at intervals on the outer side of the hollow cutter surface of the radial alignment plate, and the radial alignment screws are arranged in corresponding radial adjusting threaded holes of the connecting ring;
fourthly, mounting handles of the spring chuck clamping fixing seats are adopted, and radial rough adjustment alignment is conducted on radial mounting holes of the radial alignment plates through radial adjusting screws;
⑸, connecting the axial alignment plate with the device through axial connecting screws in the internal connecting threaded holes in the hollow tool face of the radial alignment plate, installing the axial alignment screws in corresponding axial adjusting threaded holes of the axial alignment plate, and then installing the radial clamping device on corresponding outer circles of the axial alignment plate;
installing a bonding tool in a bonding tool installation hole of the axial alignment plate, and clamping the part by using a radial clamping device;
axial connecting screws installed in the inner connecting threaded holes and the outer connecting threaded holes of the radial aligning plate are fastened so as to ensure that the radial aligning plate and the axial aligning plate are not loosened;
adjusting an axial alignment screw in an axial adjustment threaded hole formed in the axial alignment plate, aligning in the axial direction, wherein the runout is not more than 0.01, and ensuring that the axial alignment plate is in a fastening state by utilizing the elastic deformation of the screw;
the self-supporting is used for radially aligning the part by adjusting a radial alignment screw in a radial adjustment threaded hole of a radial alignment plate, the jump is not more than 0.01, and the radial alignment plate is ensured to be in a fastening state by utilizing the elastic deformation of the screw;
the semi-finish grinding processing of the harmonic oscillator is carried out by adopting the outer circle grinding wheel and the ball head grinding wheel, and when 0.02 allowance is respectively reserved on the inner spherical surface and the outer spherical surface, the bonding tool and the harmonic oscillator are taken down;
repeating the steps (6) to (10) to perform semi-finishing on the next part;
after semi-finish machining of all harmonic oscillators is completed, an outer circle grinding wheel and a ball head grinding wheel for precision machining are replaced, the steps (6) - (9) are repeated to clamp and align the parts, radial runout and axial runout are not larger than 0.002, final precision grinding machining of the parts is completed, then the bonding tool and the harmonic oscillators are taken down, and the steps (6) - (9) are repeated to complete precision alignment and grinding machining of all harmonic oscillators.
and (5) cutting off the process handle by adopting a grinding method to obtain the final finish machining of the harmonic oscillator.
6. The precision grinding process of the quartz glass semispherical part according to claim 5, characterized in that: the head parts of the radial alignment screw and the axial alignment screw are spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010003800.4A CN111168477A (en) | 2020-01-03 | 2020-01-03 | Precision grinding tool and process for quartz glass ball parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Application publication date: 20200519 |