CN216913392U - Grinding head replacing structure of straight engraving and grinding machine - Google Patents

Grinding head replacing structure of straight engraving and grinding machine Download PDF

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Publication number
CN216913392U
CN216913392U CN202121264448.6U CN202121264448U CN216913392U CN 216913392 U CN216913392 U CN 216913392U CN 202121264448 U CN202121264448 U CN 202121264448U CN 216913392 U CN216913392 U CN 216913392U
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China
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clamping
grinding head
rear end
straight
grinding
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CN202121264448.6U
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Chinese (zh)
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鲍晓峰
潘德才
蔡春波
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Ningbo Shengyang Machinery Co ltd
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Ningbo Shengyang Machinery Co ltd
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Abstract

The utility model discloses a grinding head replacing structure of a straight type engraving and milling machine, which comprises a cutting sleeve, a locking nut and a spring, wherein the locking nut is sleeved outside the cutting sleeve, the spring is arranged in the cutting sleeve, one end of the spring abuts against the front end of the cutting sleeve, the other end of the spring abuts against the rear end of the locking nut, a plurality of convex blocks which are uniformly distributed in the circumferential direction are arranged on the inner wall of the locking nut, a clamping groove is formed between every two adjacent convex blocks, and a convex point is arranged at the rear end of each convex block; the periphery of the rear end of the clamping sleeve is provided with a plurality of clamping blocks matched with the clamping grooves, and the front end of each clamping block is provided with a groove matched with the convex point; when the grinding head is replaced, the clamping block is matched with the clamping groove. The grinding head can be easily replaced by a single person, so that the replacement efficiency is improved, and the labor cost can be reduced.

Description

Grinding head replacing structure of straight engraving and grinding machine
Technical Field
The utility model relates to the technical field of straight carving mills, in particular to a grinding head replacing structure of a straight carving mill.
Background
The existing engraving and milling machine comprises a handle, a cylinder arranged in the handle and a main shaft connected with a cylinder blade shaft, wherein a milling head is connected to the main shaft, and when the engraving and milling machine is used, the cylinder is ventilated, and airflow power is transmitted to the main shaft, so that the milling head rotates, and then a workpiece is polished. The grinding head of the engraving and milling machine with the structure is a quick-wear part, and the grinding head needs to be replaced at variable time in the using process.
The existing carving mill without the rapid grinding head structure needs to clamp and fix a main shaft when a grinding head is replaced, then the grinding head is manually rotated, so that the grinding head is separated from the main shaft, and finally a new grinding head is replaced on the main shaft. In addition, when the grinding head is replaced, the existing engraving and milling machine with the quick grinding head replacing structure needs to be pulled out by external force, rotate to lock the main shaft and replace the grinding head, and the outward pulling operation is still troublesome and labor-saving by adopting the mode to replace the grinding head.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem that exists among the prior art, aim at providing a straight formula and carve change bistrique structure of mill, through the change that single just can easily accomplish the bistrique, improve change efficiency, and can reduce the cost of labor.
The specific technical scheme is as follows:
the grinding head changing structure of the straight type engraving and milling machine comprises a clamping sleeve, a locking nut and a spring, wherein the locking nut is sleeved outside the clamping sleeve, the spring is arranged in the clamping sleeve, one end of the spring abuts against the front end of the clamping sleeve, the other end of the spring abuts against the rear end of the locking nut, a plurality of convex blocks which are uniformly distributed in the circumferential direction are arranged on the inner wall of the locking nut, a clamping groove is formed between every two adjacent convex blocks, and a convex point is arranged at the rear end of each convex block; the periphery of the rear end of the clamping sleeve is provided with a plurality of clamping blocks matched with the clamping grooves, and the front end of each clamping block is provided with a groove matched with the convex point; when the grinding head is replaced, the clamping block is matched with the clamping groove.
Compared with the prior art, the locking or unlocking of the main shaft of the straight engraving and milling machine is realized through the mutual matching of the ferrule and the locking nut, when the straight engraving and milling machine works normally, the convex points on the convex blocks of the locking nut are matched with the grooves on the ferrule and the clamping block, and the ferrule and the locking nut have no influence on the main shaft; when changing the bistrique, direct rotatory lock nut need not to pull out the operation outward, just can make the fixture block on the cutting ferrule slide in lock nut's block draw-in groove, realizes dying to the screens lock of main shaft, need not to accomplish the action of dying of lock of main shaft through other staff, and single just can change the bistrique, has reduced the cost of labor in the at utmost, and can improve change efficiency.
As an improvement of the utility model, the salient points are of spherical structures. Through this setting, straight formula carving mill when normal use, the bump of lug and the recess looks block of fixture block, the bump adopts spherical structure, and the operator singlehanded rotation cutting ferrule of being convenient for is in order to easily realize the restriction of cutting ferrule to the main shaft, improves and trades bistrique efficiency. Because normal operating, do not have the effect of power to cutting ferrule and lock nut in the circumference, so can not appear unexpected slippage and the locking condition between bump and the recess.
Preferably, the rear end of the projection is embedded with a steel ball, and the part of the steel ball protruding out of the rear end of the projection forms the salient point. Through this setting, be convenient for change light when bistrique rotatory, and the steel ball has better wearability, improves life.
As an improvement of the utility model, the number of the clamping grooves, the clamping blocks and the protruding blocks is 4. Through this setting, can guarantee the fixture block and the fashionable firm type of block draw-in groove block, also guarantee the fashionable steadiness of the recess of fixture block and the bump block simultaneously, make the cutting ferrule can be stabilized spacing.
As an improvement of the present invention, on the clamping sleeve, an opening of a notch formed between two adjacent clamping blocks is smaller than a length of each clamping block along a circumferential direction of the clamping sleeve. Through the arrangement, when the clamping block is matched with the clamping groove to lock the main shaft, the contact area between the clamping block and the clamping groove is increased, the stability of locking and matching between the clamping sleeve and the locking nut is better ensured, and the grinding head is convenient to replace.
As an improvement of the present invention, in the lock nut, a ratio of a length of the notch opening of the engaging groove to a length of each projection along a circumferential direction of the lock nut is 3: 1. Through the arrangement, the stability of the clamping block and the clamping groove in the matched locking process of the main shaft is optimal, and the grinding head is convenient to replace.
Drawings
FIG. 1 is an overall view of the grinding head changing structure of the straight type engraving and milling machine of the present invention;
FIG. 2 is a first schematic view of a mounting structure of a grinding head replacing structure of the straight type engraving and milling machine of the present invention;
FIG. 3 is a schematic view of a mounting structure of a grinding head exchanging structure of the straight type engraving and milling machine of the utility model;
fig. 4 is a sectional view of a mounting structure of a grinding head exchanging structure of the straight engraving and milling machine of the present invention;
fig. 5 is an exploded view one of the mounting structure of the grinding head exchanging structure of the straight engraving and milling machine of the present invention;
FIG. 6 is an exploded view II of the mounting structure of the grinding head exchanging structure of the straight engraving and milling machine of the present invention;
FIG. 7 is a schematic structural diagram of a cutting ferrule in the grinding head exchanging structure of the straight type engraving and milling machine of the present invention;
fig. 8 is a schematic structural diagram of a lock nut in the grinding head exchanging structure of the straight engraving and milling machine of the utility model.
In the attached drawings, 1, a main shaft; 2. a chuck; 3. an outer hex; 4. a card sleeve; 4.1, inner hexagonal holes; 4.2, clamping blocks; 4.3, grooves; 4.4, limiting steps; 5. locking the nut; 5.1, a bump; 5.2, clamping the clamping groove; 5.3, salient points; 6. a spring; 7. a gasket; 8. and (4) a nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
Fig. 1 to 3 are schematic diagrams of a grinding head exchanging structure of a straight carving and grinding machine and an installation structure thereof, wherein the straight carving and grinding machine comprises a handle, a power mechanism arranged in the handle, and a main shaft 1 connected with the power mechanism, and a chuck 2 for installing a grinding head is connected to the front end of the main shaft 1. Defining: the front end is one end close to the grinding head, and the rear end is one end close to the handle.
An outer hexagonal piece 3 is arranged outside the main shaft 1, a clamping sleeve 4 is sleeved outside the main shaft 1, and an inner hexagonal hole 4.1 clamped with the outer hexagonal piece 3 is formed in the front end of the clamping sleeve 4.
The cutting ferrule 4 is externally sleeved with a locking nut 5, as shown in fig. 4, 5 and 7, the inner wall of the locking nut 5 is provided with a plurality of convex blocks 5.1 which are uniformly distributed in the circumference, a clamping groove 5.2 is formed between every two adjacent convex blocks 5.1, and the rear end of each convex block 5.1 is provided with a convex point 5.3. The periphery of the rear end of the locking nut 5 is in threaded connection with the straight engraving and milling machine through threads.
The periphery of the rear end of the cutting sleeve 4 is provided with a plurality of clamping blocks 4.2 matched with the clamping grooves 5.2, as shown in figure 6, the front end of each clamping block 4.2 is provided with a groove 4.3 matched with the salient point 5.3.
The inner side of the inner hexagonal hole 4.1 is provided with a limiting step 4.4; a spring 6 is arranged in the clamping sleeve 4, one end of the spring 6 is abutted against the limiting step 4.4, and the other end of the spring 6 is abutted against the rear end of the locking nut 5. A gasket 7 is arranged in the rear end of the locking nut 5, and the gasket 7 is sleeved outside the main shaft 1; one end of the spring 6 is abutted against the limiting step 4.4, and the other end of the spring 6 is abutted against the gasket 7. The gasket 7 can play the abrasionproof effect, avoids the spring 6 constantly to lead to the condition of wearing and tearing to appear between the two with the friction of handle inner wall when cutting ferrule 4 is rotatory.
Furthermore, the convex points 5.3 are of spherical structures, preferably, the rear ends of the convex points 5.1 are provided with mounting grooves for mounting steel balls, one half of the steel balls are embedded in the mounting grooves, the other half of the steel balls protrude out of the rear ends of the convex points (5.1), the steel balls of the protruding parts form the convex points 5.3, the grinding head can be conveniently and easily rotated, the steel balls have better wear resistance, and the service life is prolonged.
Further, fixture block 4.2 is the arc, and curved fixture block 4.2 makes cutting ferrule 4 can be more smooth and easy when rotatory, is convenient for rotate cutting ferrule 4.
Furthermore, the number of the clamping grooves 5.2, the clamping blocks 4.2 and the lugs 5.1 is 4, so that the clamping stability of the clamping blocks 4.2 and the clamping grooves 5.2 can be ensured, the clamping stability of the grooves 4.3 of the clamping blocks 4.2 and the protrusions 5.3 of the lugs 5.1 can be ensured, and the clamping sleeve 4 can be stable and limited.
Further, on the cutting sleeve 4, the opening of the notch formed between two adjacent clamping blocks 4.2 is smaller than the length of each clamping block 4.2 along the circumferential direction of the cutting sleeve 4. In other words, the notch opening of the latching slot 5.2 in the locking nut 5 is greater than the length of each projection 5.1 in the circumferential direction of the locking nut 5. Through the arrangement, when the clamping block 4.2 is matched with the clamping groove 5.2 to lock the main shaft 1, the contact area between the clamping block 4.2 and the clamping groove 5.2 is increased, the stability of locking and matching between the clamping sleeve 4 and the locking nut 5 is better ensured, and the grinding head is convenient to replace.
Further, on the lock nut 5, the ratio of the length of the opening of the notch of the clamping slot 5.2 to the length of each projection 5.1 along the circumferential direction of the lock nut 5 is 3: 1. Or, on the cutting sleeve, the ratio of the opening length of the notch formed between two adjacent clamping blocks 4.2 to the length of each clamping block 4.2 along the circumferential direction of the cutting sleeve is 1: 3. Through the arrangement, the stability of the clamping block 4.2 and the clamping groove 5.2 in the process of matching and locking the main shaft is optimal, and the grinding head is convenient to replace.
The grinding changing principle of the grinding changing head structure of the straight engraving and milling machine is as follows:
when the straight type engraving and milling machine is normally used, the clamping block 4.2 at the rear end of the clamping sleeve 4 is pressed and abutted on the convex block 5.1 on the inner wall of the locking nut 5 under the action of the elastic force of the spring 6, the convex point 5.3 at the rear end of the convex block 5.1 is clamped with the groove 4.3 at the front end of the clamping block 4.2, the inner hexagonal hole 4.1 in the clamping sleeve 4 is not clamped with the outer hexagonal piece 3 on the main shaft 1, the two parts are in a separated state, therefore, the clamping sleeve 4 cannot influence the main shaft 1, the main shaft 1 can rotate under an unlimited state, the grinding head is driven to rotate, and then, a workpiece is polished.
When the grinding head is damaged due to long-time grinding of a workpiece and needs to be replaced, the straight grinding machine is closed, an operator holds the handle with one hand, holds the front end of the cutting sleeve 4 with the other hand, and then holds the hand at the front end of the cutting sleeve 4 to apply rotating external force to the cutting sleeve 4, and due to the fact that the salient points 5.3 are of the spherical structure, the cutting sleeve 4 is rotated under the action of the external force until the clamping block 4.2 of the cutting sleeve 4 is rotated into the clamping groove 5.2, and at the moment, the spring 6 can give elastic force to push the clamping block 4.2 into the clamping groove 5.2 and compress the clamping block. Because the lowest depth point of the clamping groove 5.2 is lower than the rear end of the bump 5.1, when the clamping block 4.2 is clamped into the groove bottom of the clamping groove 5.2 under the action of the spring 6, the hexagon socket 4.1 is just positioned outside the outer hexagonal part 3 and clamped with the outer hexagonal part. The clamping block 4.2 cannot rotate under the limitation of the clamping groove 5.2, so that the main shaft 1 is limited and clamped. The existence of spacing step 4.4 more can guarantee interior hexagonal hole 4.1 and the stability when outer hexagonal 3 block, alright utilize the hand of originally holding cutting ferrule 4 to go not hard up chuck 2 afterwards, dismantle the change with the bistrique, the bistrique is changed the completion after, the relocking chuck 2 can. At this moment, the cutting sleeve 4 is pushed by external force to slide out of the clamping groove 5.2, and the convex points 5.3 of the convex blocks 5.1 are clamped in the grooves 4.3 of the clamping blocks 4.2 through rotation again, so that the separation of the inner hexagonal hole 4.1 and the outer hexagonal piece 3 is completed, finally, the straight type engraving machine can be started for polishing, and the cutting sleeve 4 cannot influence the rotation of the main shaft 1.
In addition, the outer surface of the front end of the cutting sleeve 4 is provided with anti-slip lines, and the anti-slip lines can improve the friction degree between the hand of an operator and the front end of the cutting sleeve 4, so that the operator can apply force to the cutting sleeve 4 more conveniently; the nut 8 can be screwed at the front end of the cutting sleeve 4, the diameter of the front end of the cutting sleeve 4 is enlarged through the nut 8, the cutting sleeve is more beneficial to an operator to hold and take, and the cutting sleeve 4 is convenient to operate by the operator.
In conclusion, the spindle 1 can be locked in a clamping mode through the clamping of the clamping block 4.2 at the rear end of the clamping sleeve 4 and the clamping groove 5.2, the spindle 1 does not need to be locked by other workers, a grinding head can be replaced by a single person, the labor cost is reduced to the maximum extent, and the replacement efficiency can be improved.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, rear, inner and outer … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.

Claims (6)

1. The utility model provides a straight formula is carved bistrique structure of trading of mill, includes cutting ferrule (4), lock nut (5) and spring (6), lock nut (5) cover is established outside cutting ferrule (4), spring (6) set up in cutting ferrule (4), the one end of spring (6) is supported and is leaned on the front end at cutting ferrule (4), the other end of spring (6) supports and leans on the rear end at lock nut (5), its characterized in that: a plurality of convex blocks (5.1) which are uniformly distributed in the circumferential direction are arranged on the inner wall of the locking nut (5), a clamping groove (5.2) is formed between every two adjacent convex blocks (5.1), and a convex point (5.3) is arranged at the rear end of each convex block (5.1); a plurality of clamping blocks (4.2) matched with the clamping grooves (5.2) are arranged on the periphery of the rear end of the clamping sleeve (4), and a groove (4.3) matched with the salient point (5.3) is formed in the front end of each clamping block (4.2); when the grinding head is replaced, the clamping block (4.2) is matched with the clamping groove (5.2).
2. The grinding head structure of a straight grinding mill according to claim 1, wherein the salient points (5.3) are of a spherical structure.
3. The grinding head structure of the straight grinding miller as claimed in claim 2, wherein the rear end of the projection (5.1) is embedded with a steel ball, and the part of the steel ball protruding out of the rear end of the projection (5.1) forms the convex point (5.3).
4. The grinding head structure of the straight grinding machine according to claim 1, wherein the number of the clamping grooves (5.2), the clamping blocks (4.2) and the protrusions (5.1) is 4.
5. The grinding head structure of the straight grinding mill according to claim 1, wherein the opening of the notch formed between two adjacent fixture blocks (4.2) on the cutting sleeve (4) is smaller than the length of each fixture block (4.2) along the circumferential direction of the cutting sleeve (4).
6. The grinding head structure of the straight grinding machine according to claim 1, wherein the ratio of the length of the opening of the notch of the clamping slot (5.2) to the length of each bump (5.1) along the circumferential direction of the locking nut (5) on the locking nut (5) is 3: 1.
CN202121264448.6U 2021-06-07 2021-06-07 Grinding head replacing structure of straight engraving and grinding machine Active CN216913392U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121264448.6U CN216913392U (en) 2021-06-07 2021-06-07 Grinding head replacing structure of straight engraving and grinding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121264448.6U CN216913392U (en) 2021-06-07 2021-06-07 Grinding head replacing structure of straight engraving and grinding machine

Publications (1)

Publication Number Publication Date
CN216913392U true CN216913392U (en) 2022-07-08

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ID=82222634

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121264448.6U Active CN216913392U (en) 2021-06-07 2021-06-07 Grinding head replacing structure of straight engraving and grinding machine

Country Status (1)

Country Link
CN (1) CN216913392U (en)

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