CN114770246B - A method for processing a mandrel push rod of an expansion can mold and a special indexing grinder - Google Patents
A method for processing a mandrel push rod of an expansion can mold and a special indexing grinder Download PDFInfo
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- CN114770246B CN114770246B CN202210511039.4A CN202210511039A CN114770246B CN 114770246 B CN114770246 B CN 114770246B CN 202210511039 A CN202210511039 A CN 202210511039A CN 114770246 B CN114770246 B CN 114770246B
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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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
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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
- B24B27/00—Other grinding machines or devices
- B24B27/02—Bench grinders
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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
- B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
- B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs
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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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/14—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding conical surfaces, e.g. of centres
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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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
本发明涉及机械加工技术领域，特别涉及一种胀罐模的芯轴推杆加工方法及专用分度研磨器。所述加工方法是先将一段定位圆杆加工成，再在定位杆上加工基准定位扁，然后再二段锥杆上加工按圆周均分的锥面。所述专用分度研磨器包括底座定位组、可动定位组、分度组三部分，所述可动定位组安装在所述底座定位组的右侧，根据推杆的长度不同在产品装夹时进行定位调整，所述分度组安装在所述底座定位组的左前侧，对产品进行分度。本发明加工方法能够实现胀灌模的芯轴推杆多角度面的加工，保证芯轴推杆的使用精度，提高推杆的寿命。专用分度研磨器的分度方便快捷对产品质量和效率有大幅度提升。
The present invention relates to the field of mechanical processing technology, and in particular to a method for processing a mandrel push rod of an expansion can mold and a special indexing grinder. The processing method is to first process a section of a positioning round rod, then process a reference positioning flat on the positioning rod, and then process a conical surface evenly divided according to the circumference on a two-section conical rod. The special indexing grinder includes three parts: a base positioning group, a movable positioning group, and a indexing group. The movable positioning group is installed on the right side of the base positioning group, and the positioning adjustment is performed when the product is clamped according to the different lengths of the push rod. The indexing group is installed on the left front side of the base positioning group to index the product. The processing method of the present invention can realize the processing of multi-angle surfaces of the mandrel push rod of the expansion mold, ensure the use accuracy of the mandrel push rod, and increase the life of the push rod. The indexing of the special indexing grinder is convenient and fast, which greatly improves the product quality and efficiency.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a mandrel push rod machining method of a tank expanding die and a special indexing grinder.
Background
The expansion tank mould is a mould for producing and manufacturing tank, and the expansion tank mould is used for forming a product by radial expansion movement of a mould core of the mould as the name implies. The die core moves radially through the axial movement of the mandrel push rod.
The expansion tank mould is mainly used for producing iron product tank bodies for producing tank products such as milk powder, protein powder and the like. The shape structure and the machining precision of the mandrel push rod relate to the quality of a product, the shape and the precision of an inner cavity of the product expanded by the die core can be directly influenced, and meanwhile, the service life of the mandrel can be influenced.
The machining of the mandrel push rod is generally a turning and milling compound machine tool or a machining center machine tool, because the push rod is a cutter grain generated by machining of a conical surface cutter and is not a grain along an axis, the smoothness in use is poor, the symmetry degree of the conical surface to the central line can not meet the use requirement of a product, and the cutter is worn and needs to be replaced frequently to generate errors.
Disclosure of Invention
The invention aims to solve the technical problem that the existing turning and milling compound and machining center machine tool is not suitable for machining a mandrel push rod, and provides a machining method of the mandrel push rod, which can realize machining of a machining texture of a taper surface of the mandrel push rod along an axis direction, so that the mandrel push rod which can meet production requirements is machined, extrusion of the mandrel push rod is reduced, friction is reduced, and the push rod can be smoothly pushed and pulled.
The invention further aims to solve the technical problem that the existing turning and milling combined and machining center machine tool equipment is not suitable for machining of a mandrel push rod, and provides a special indexing grinder for machining of the mandrel push rod, wherein machining of the grinding direction along the axis direction can be achieved by machining of a conical surface on a plane grinding machine. Because the positioning references of the push rod processing are the positioning references of the two end holes, the consistency of the references is ensured, and the symmetry is stable and accurate.
The technical scheme adopted by the invention for achieving the purpose is as follows: a mandrel push rod processing method of a tank expanding die is characterized by comprising the following steps of: firstly, processing a first section of positioning round rod of two sections of ladder round rods of a push rod, then processing a positioning flat on the positioning round rod, and then processing a multi-face cone on a second section of conical rod, wherein the method specifically comprises the following steps of:
s1: the rough machining of the shape of the mandrel push rod comprises the following specific steps:
1) Machining the appearance of the push rod, drilling, clamping and jacking the push rod by an ordinary lathe, and roughly machining the large end flat, the length of the push rod, the length of the conical rod, the positioning round rod and the size of the exhaust transverse hole, wherein the appearance allowance of the large end flat is 0.3-0.5mm according to the outer circle of the large end;
2) Machining exhaust holes on the taper surface of the push rod, clamping and drilling all holes on a chuck of a universal dividing head on a milling machine, and meanwhile, carrying out rough machining on the positioning flat and the positioning flat length of the first section of rod by 0.5mm;
s2: the cylindrical grinding machine processes the large end surfaces of the first section of positioning round rod and the cone part, and comprises the following specific steps:
clamping the push rod between two centers of a workbench of the cylindrical grinder, and carrying out rough grinding and fine grinding on the size of the first section of positioning round rod by taking the two center holes of the push rod as references, wherein the center holes at the two ends of the push rod are required to be ground before clamping, so that the roundness and the positioning accuracy are ensured;
s3: the flat grinding machine processes each flat on the first section of positioning round rod, and comprises the following specific steps:
clamping the push rod on a precise V-shaped jig to process a positioning flat on the first section of rod;
s4: the surface grinding machine processes the second section conical surface, and the specific steps are as follows:
1) The method comprises the steps of processing 18 equally dividing the large end into flat parts, namely placing a special indexing grinder on a machine tool workbench, enabling a grinder base to be parallel to a longitudinal track of the machine tool workbench, namely, in the X-axis direction, installing an index plate on a reference rod of a positioning round rod size of a mandrel push rod for alignment and locking, and installing the mandrel push rod on the indexing grinder for rough machining and finish machining;
2) And (3) machining the angle of the conical surface and the length of the large end: the method comprises the steps of installing a sine magnetic table on a machine tool workbench according to angle adjustment of a conical surface, then placing an index grinder on the sine magnetic table, carrying out angle conical surface machining, firstly roughly machining any two symmetrical surfaces by 0.1mm, then carrying out three-time circle detection on whether the angle values of the two symmetrical surfaces are within a tolerance, if not, carrying out angle difference adjustment of the sine magnetic table, then carrying out rough machining of other surfaces, and then carrying out semi-finishing and finishing.
In the step S1, two parts of a mandrel push rod are formed, a first straight round rod is provided with a positioning flat, a second conical rod is formed by a multi-surface cone with a large end and a small end, the shape of the mandrel push rod is roughly machined through a common lathe and a milling machine, and the exhaust hole takes the positioning flat of the first section of rod as a positioning reference.
In the step S2, rough grinding and fine grinding of the first-stage positioning round rod size are carried out, the cylindricity tolerance is controlled within 0.005mm, and then the flatness and verticality of the taper large end face are controlled within 0.01.
In step S3, the positioning flat on the first section of round rod is processed on the precise V-shaped jig, the parallelism of clamping alignment before processing is noted to be within 0.05mm, otherwise, the position of an air hole on the taper rod has deviation to influence the appearance and quality, the round rod on the first section is used as a reference for positioning, then the plane of the positioning flat size is aligned within 0.05mm on the horizontal direction plane, and then the processing of the positioning flat size plane is performed.
In step S4, the taper angle is an 18-equal-divided taper of the taper, and the taper angle is adjusted and controlled by a sinusoidal magnetic table and the indexing equal-divided machining of the push rod is controlled by a special indexing disc.
The finish of the grinding by the processing method can be controlled within Ra0.1.
The special indexing grinder applied to the mandrel push rod processing method of the tank expansion die is characterized in that: the device comprises a base positioning group, a movable positioning group and an indexing group, wherein the movable positioning group is arranged on the right side of the base positioning group, positioning adjustment is carried out during product clamping according to different lengths of a push rod, and the indexing group is arranged on the left front side of the base positioning group and is used for indexing products;
The base positioning group comprises a main board base, a left end positioning seat and a left center, wherein the left end positioning seat is arranged at the left end of the main board base, and the left center is arranged in a center fixing hole of the left end positioning seat;
the movable positioning group comprises a T-shaped key, a right movable positioning seat, a right top sliding block, a right sliding block plate, a right top tightness adjusting block, a right top and a transposition pin, the right sliding block plate is arranged below the right top sliding block, the right center tightness adjusting block is arranged on the right side of the right movable positioning seat, the right center sliding block is arranged above the right movable positioning seat, the T-shaped key is arranged below the right movable positioning seat, and the transposition pin is arranged in a movable positioning hole of the right movable positioning seat to play a role in positioning after shifting;
the indexing group comprises a special indexing disc, an indexing positioning pin seat, an indexing pin and an indexing pin inner spring, wherein the indexing pin inner spring is arranged in the indexing pin, and has the function of elastically contracting the indexing pin during indexing in product processing to play a role of automatic locking, the indexing pin is arranged in a pin positioning hole on the indexing positioning seat, performs telescopic movement in the hole to lock and position the indexing disc, and the special indexing disc is arranged at a reference positioning part of a mandrel push rod to play a role of linking the mandrel push rod and drive the mandrel push rod to index during indexing.
A transposition pin hole for the movable positioning group to move and adjust the position positioning is formed in the right side surface of the main board base, and the transposition pin hole is connected and locked with the T-shaped key through a screw; the left side of the main board base is provided with a positioning pin hole for positioning and locking an indexing positioning pin seat, and the indexing positioning pin seat can be subjected to left-right position adjustment according to the position of a special indexing disc and is locked by a pin; the left end positioning seat and the main board base are positioned by pins and then screwed by using hexagon socket head cap screws.
The right side slider plate is fixedly and tightly arranged below the right side center slider by using a cylindrical head screw, the right center tightness adjusting block is fixedly and tightly arranged on the right side of the right end movable positioning seat by using a cylindrical head screw, the right side center slider is fixedly arranged above the right end movable positioning seat by using a cylindrical head screw, and the T-shaped key is connected below the right end movable positioning seat by using a cylindrical head screw.
The indexing groove of the special indexing disc can be manufactured according to the indexing quantity and the indexing angle required by the product; the end of the indexing pin is provided with an indexing pin cap, and the indexing pin cap plays a role in manually pulling the indexing pin during indexing.
The processing method of the mandrel push rod has the following beneficial effects:
The mandrel push rod completes a series of processing procedures on the special indexing grinder, and the special indexing disc of the special indexing grinder can be manufactured according to the indexing requirement of products. The plane processing of the polygonal body or the conical surface processing of the polygonal taper body can be realized, the grinding direction of the processing surface is along the axial grinding direction, the grinding finish can be controlled within Ra0.1, and the friction coefficient in the working process can be well reduced. The angle of the conical surface of the mandrel push rod can be designed according to the expansion amount of the expansion filling die. The processing method can meet the use precision of the push rod, greatly reduce the processing cost of the mandrel push rod, improve the productivity, and is suitable for the production and processing of products with the technical requirements, thereby enabling the products to be more competitive in the market.
The special indexing grinder for machining the mandrel push rod has the following beneficial effects:
The special indexing grinder for the mandrel push rod realizes indexing adjustment of various angles of the mandrel push rod by replacing the special indexing disc. The indexing accuracy is high, the indexing accuracy can be easily ensured, and the special indexing disc is used for indexing a single product, so that the structure is simple, and the positioning of the angle position can be quickly changed. The positioning references are the positioning of the two end center holes during the processing of the push rod, and the form and position tolerance is guaranteed very well, so that the special indexing grinder is convenient to operate and high in practicability, and the processing efficiency can be improved by more than 30%, thereby improving the processing capacity and market share.
Drawings
Fig. 1 is a block diagram (front view) of a special indexing grinder for machining a spindle push rod according to the present invention.
Fig. 2 is a block diagram (side view) of a special indexing grinder for machining a spindle push rod according to the present invention.
Fig. 3 is a diagram of a base positioning block of fig. 1.
Fig. 4 is a view showing a construction of the movable positioning group of fig. 1.
Fig. 5 is a view showing the structure of the index group of fig. 1.
Fig. 6 is a first structural view of a spindle pushrod processed according to the present invention.
Fig. 7 is a second structural view of the spindle push rod processed according to the present invention.
FIG. 8 is a schematic view of a large end flat dimension of a spindle pushrod according to the present invention.
FIG. 9 is a schematic view of the tapered angle surface and the major-end flat length dimension of the spindle pushrod according to the invention.
In the figure: a main board base, a left end positioning seat, a left center, a 4T-shaped key, a right end movable positioning seat, a right side center sliding block, a right side sliding block, an 8 right center tightness adjusting block, a right center, a special index plate for 10, an 11-degree positioning pin seat, a 12-degree pin, a 13-degree pin inner spring, a 14-degree pin cap, a 15 pin and a 16-degree pin;
B positioning flat, C positioning flat length, D big end flat, E big end flat length, F conical surface angle, G positioning round rod, H push rod length, I conical rod length, J exhaust hole, K big end excircle and P exhaust cross hole.
Detailed Description
The present invention will be described in detail below with reference to the drawings and examples, but the present invention is not limited to the specific examples.
Example 1
As shown in fig. 1-5, an indexing grinder special for a processing method of a push rod of a tank expansion mold core shaft comprises: base positioning group, movable positioning group and indexing group.
The base locating group includes: motherboard base 1, left end positioning seat 2, left top 3. The left end positioning seat 2 is arranged at the left end of the main board base 1 and is screwed up by using a hexagon socket head cap screw after being positioned by a pin. The left center 3 is arranged in a center fixing hole of the left end positioning seat 2. The main board base 1 is the base of the index grinder and is the core that supports the entire system. The left end positioning seat 2 and the left center 3 form a machine head of the indexing grinder, and play a role in positioning a left end positioning hole of a product.
The movable positioning group comprises: t-shaped key 4, right-hand movable positioning seat 5, right top slider 6, right slider plate 7, right top elasticity adjusting block 8, right top 9, transposition pin 16, movable positioning group constitutes tailstock system. The function is that the position of tailstock can be adjusted according to the different length of dabber ejector pins. The right slider plate 7 is arranged below the right center slider 6 and is fixed tightly by using a cylindrical head screw to form a sliding mechanism. The right center tightness adjusting block 8 is arranged on the right side of the right movable positioning seat 5 and is fixedly locked by using a cylindrical head screw. The right top slider 6 is arranged on the right movable positioning seat 5 and is fixed by using a hexagon socket head cap screw. The lower part of the right movable positioning seat 5 installed by the T-shaped key 4 is connected by using a hexagon socket head cap screw. The transposition pin 16 is arranged in a movable positioning hole of the right movable positioning seat 5 to play a role in positioning after shifting. The tailstock system formed by the movable positioning group is arranged at the right end of the main board base 1 and adjusts and positions the length distance according to the different lengths of the mandrel push rods.
The indexing group includes: the special indexing disc 10, the indexing positioning pin seat 11, the indexing pin 12, the indexing pin inner spring 13, the indexing pin cap 14 and the pin 15. The inner spring 13 of the index pin is arranged in the index pin 12 and has the function of elastically contracting the index pin during indexing in the product processing, thereby playing an automatic locking function. The indexing pin 12 is arranged in a pin positioning hole on the indexing positioning pin seat 11, and the indexing pin 12 performs telescopic movement in a pin hole to position and lock the special indexing disk 10. The index pin cap 14 is screwed down after the index pin 12 is mounted, and the index pin cap 14 plays a role of manually pulling the index pin 12 when the special index plate 10 rotates to an angle. The special index plate 10 is a reference positioning part arranged on the mandrel push rod and plays a role in linking the indexing of the mandrel push rod. The indexing system is formed into a positioning indexing system, is arranged at the left front part of the main board base 1, and can be used for indexing the mandrel push rod according to different product indexing positioning reference positions of the mandrel push rod, and the indexing system can be used for adjusting the positions left and right to perform indexing action on the mandrel push rod.
The tailstock system formed by the movable positioning group of the special indexing grinder is used for grinding along the axial direction of the mandrel pushing rod when the mandrel pushing rod is machined due to the center structure, the special indexing grinder is adjusted on a sine magnetic table by using the magnetic table, the angle range is only allowed to be within 0 to 14 degrees, and cannot be larger than 14 degrees, otherwise, the grinding wheel is ground to the right center sliding block 6. If the grinding direction without grinding is required, the sinusoidal magnetic table can be rotated by 90 degrees, so that the grinding lines form a 90-degree direction on the axis of the push rod, and the angle adjustment range of the sinusoidal magnetic table is allowed to be 0 to 25 degrees.
When the special indexing grinder is used, when the movable positioning system is adjusted according to the length of a product, the hexagon socket head cap screw on the T-shaped key 4 is loosened to pull out the transposition pin 16, the movable positioning system is moved backwards, then the mandrel push rod is placed on the special indexing grinder, the movable positioning system is moved forwards to be propped into the hole at the right end of the mandrel push rod, then the transposition pin 16 is inserted into the positioning hole, and the screw on the T-shaped key 4 is screwed. After the mandrel push rod is installed on the special indexing grinder, the mandrel push rod is rotated to check the jacking degree of the push rod to adjust the tightness of the push rod by the screw on the right center tightness adjusting block 8, and then the screw on the right center sliding block 6 is locked.
The special indexing grinder has the advantages of exquisite design, simple structure, convenient operation, very flexible and strong practicability, and can improve the processing efficiency by more than 30 percent, thereby improving the processing capacity and the market share.
Example 2
The mandrel push rod processing method of the expansion tank die firstly processes a first section of positioning round rod of two sections of ladder round rods of the mandrel push rod, then processes a positioning flat on the positioning round rod, and then processes a multi-surface cone on a second section of conical rod, as shown in fig. 6-7, and specifically comprises the following steps:
S1: the rough machining of the shape of the mandrel push rod comprises the following specific steps:
(1) And (3) carrying out outline machining on the push rod, drilling, clamping and pushing through an ordinary lathe, carrying out rough machining on the large end flat D, the length H of the push rod, the length I of the conical rod, the positioning round rod G and the size of the exhaust transverse hole P, and paying attention to the fact that the large end flat D is machined according to the size of the large end excircle K, wherein the outline allowance is 0.3-0.5mm.
(2) And (3) processing the exhaust hole J on the taper surface of the push rod, and clamping and drilling holes on a chuck of a universal dividing head on a milling machine. And meanwhile, the rough machining allowance of the locating flat B and the locating flat length C of the first section of rod is 0.5mm.
S2: the cylindrical grinding machine processes the large end face of the first section of round rod and the large end face of the cone part, and the specific steps are as follows:
The push rod is clamped between two centers of a workbench of a cylindrical grinder, rough grinding and precision of the size of a first section of positioning round rod G are carried out, the cylindricity tolerance is controlled within 0.005mm, and then the flatness and verticality of the large taper end face are controlled within 0.01. And the center holes at the two ends of the push rod are ground before clamping, so that the roundness and the positioning accuracy are ensured.
S3: the flat grinding machine processes each flat on the first section of round rod, and comprises the following specific steps:
and (3) clamping the push rod to a positioning flat B on the first section of rod of the precise V-shaped jig, wherein the parallelism of clamping alignment before machining is within 0.05mm, otherwise, the position of an air hole on the taper rod has deviation to influence the appearance and quality.
S4: the surface grinding machine processes the second section conical surface, and the specific steps are as follows:
(1) According to FIG. 8, a flat large end flat D is machined 18 equally dividing a flat surface by placing a special indexing grinder on the machine table with the grinder base parallel to the longitudinal rail of the machine table, i.e., the X-axis direction. And installing a special index plate on a standard rod of the positioning round rod G size of the mandrel push rod for alignment and locking. And then the mandrel push rod is arranged on a special indexing grinder, and the planes are subjected to rotary indexing processing through a special indexing disc, rough processing, semi-finishing processing and finish processing. During rough machining, all surfaces with large end flat D size are rough machined, then semi-finished and finished, and therefore symmetry accuracy of the product can be well controlled. The rough machining is carried out for about 0.05-0.08mm of semi-finishing allowance, and the semi-finishing is carried out for 0.005-0.01mm of finishing allowance. The grinding wheel is selected from a CBN grinding wheel with 80 granularity for rough grinding, a CBN grinding wheel with 230 granularity for semi-fine grinding and a CBN grinding wheel with 800 granularity for fine grinding.
(2) As shown in fig. 9, the taper angle F and the large end prolate E value size are machined: the sine magnetic table is adjusted according to the angle of the conical surface angle F and then is arranged on a machine tool workbench, and then a special indexing grinder is arranged on the sine magnetic table. Both the sinusoidal magnetic table and the special indexing grinder are parallel to the machine table, i.e. the X-axis direction. Firstly, checking whether the angle of the magnetic table is correct or not, firstly, arbitrarily selecting two symmetrical planes for rough grinding and then semi-fine grinding, wherein the machining allowance is 0.1mm, and simultaneously, calculating the allowance of the E value size is as follows: 0.1/sinF degrees = E-retention value. And then, carrying out three circles to detect whether the angle F of the conical surfaces of the two symmetrical planes is within the tolerance and whether the allowance of the E value size of the large end prolate is correct, and if the angle F of the conical surfaces is not within the tolerance, carrying out the height new adjustment of the angle adjusting block of the sine magnetic table. Correcting the angle of the sine magnetic table, then carrying out rough grinding processing on other conical surfaces, and then carrying out semi-fine grinding processing and fine grinding processing, and ensuring the dimension tolerance of the E value of the length of the large end while processing the conical surface. The grinding wheel selection and allowance processing process is as described in (1). The grinding mode is required to finish all conicity of the mandrel push rod in a rough grinding mode, and then finish all conicity of the mandrel push rod in a semi-finish grinding mode and finish all conicity of the mandrel push rod in a finish grinding mode, so that symmetry degree and size consistency can be easily ensured.
The mandrel push rod completes a series of processing procedures on a special angle grinder, the angle of the special indexing grinder is only allowed to be within 0 to 14 degrees on a sine magnetic table, and cannot be larger than 14 degrees, otherwise, the grinding wheel grinds to a 6 right-side center slide block. If the grinding direction without grinding is required, the sinusoidal magnetic table can be rotated by 90 degrees, so that the grinding lines form a 90-degree direction on the axis of the push rod, and the angle adjustment range of the special indexing grinder on the sinusoidal magnetic table is allowed to be 0 to 25 degrees. The special grinder can meet different indexing requirements of the push rod, is convenient, accurate and quick to index, meets the grinding direction requirement of a product, reduces the friction force between the die core of the expansion filling die and the push rod of the mandrel, and prolongs the service lives of the die core and the push rod.
The above is a further detailed description of the present invention in connection with the preferred embodiments, and it should not be construed that the invention is limited to the specific embodiments. It should be understood by those skilled in the art that the present invention may be simply put forth and substituted without departing from the spirit of the invention.
Claims (5)
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| CN202210511039.4A CN114770246B (en) | 2022-05-11 | 2022-05-11 | A method for processing a mandrel push rod of an expansion can mold and a special indexing grinder |
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| CN202210511039.4A CN114770246B (en) | 2022-05-11 | 2022-05-11 | A method for processing a mandrel push rod of an expansion can mold and a special indexing grinder |
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| US4253279A (en) * | 1979-07-30 | 1981-03-03 | Sunnen Products Company | Precision honing device |
| JP2788725B2 (en) * | 1987-01-17 | 1998-08-20 | 豊田工機株式会社 | Numerical control unit |
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| DE10234707B4 (en) * | 2002-07-30 | 2007-08-02 | Erwin Junker Maschinenfabrik Gmbh | Method and device for grinding a rotationally symmetrical machine component |
| CN103447757A (en) * | 2012-06-04 | 2013-12-18 | 山迈工程机械(上海)有限公司 | Eccentric sleeve machining process |
| RU2523398C1 (en) * | 2012-12-11 | 2014-07-20 | Открытое акционерное общество "Челябинский трубопрокатный завод" | PRODUCTION OF SEAMLESS COLD-FORMED OIL-WELL TUBING SIZED TO 114,3×6, 8×9000-10700 mm FROM CORROSION-RESISTANT ALLOY OF "ХН30МДБ-Ш" GRADE |
| CN105081713B (en) * | 2014-05-15 | 2017-10-17 | 重庆智展齿轮传动有限公司 | The processing method of integral type bevel gear |
| CN105522345A (en) * | 2015-11-12 | 2016-04-27 | 陕西一品达石化有限公司 | Hexagonal mandrel machining method |
| TWI602654B (en) * | 2016-06-21 | 2017-10-21 | Spindle bore taper grinding machine | |
| CN106041715B (en) * | 2016-07-28 | 2019-04-19 | 成都成高阀门有限公司 | A kind of valve body tapered surface grinding tool and grinding method |
| JP7311171B2 (en) * | 2018-07-28 | 2023-07-19 | 天津大学 | Grinding disc set, equipment and method for finishing rolling surfaces of bearing rollers |
| CN208840389U (en) * | 2018-09-29 | 2019-05-10 | 浙江龙文精密设备股份有限公司 | Swell device |
| CN111843649B (en) * | 2020-08-18 | 2025-01-07 | 汉中天行智能飞行器有限责任公司 | A high-precision variable-section long thin rod parts processing device and processing method |
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