CN211332739U - Guide sleeve structure for deep hole grinding head - Google Patents
Guide sleeve structure for deep hole grinding head Download PDFInfo
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- CN211332739U CN211332739U CN201922069453.0U CN201922069453U CN211332739U CN 211332739 U CN211332739 U CN 211332739U CN 201922069453 U CN201922069453 U CN 201922069453U CN 211332739 U CN211332739 U CN 211332739U
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- guide sleeve
- groove ball
- deep groove
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Abstract
The utility model discloses a guide sleeve structure for a deep hole grinding head, which comprises a tubular guide sleeve, a drill rod bearing shaft core, a bearing spacer, a bearing pressing piece, a left deep groove ball bearing and a right deep groove ball bearing; the inner wall of the drill rod bearing shaft core is used for mounting a drill rod, and a left deep groove ball bearing, a bearing spacer and a right deep groove ball bearing are sequentially sleeved on the outer wall of the drill rod bearing shaft core from left to right and then are accommodated in the guide sleeve; a bearing stopping step is arranged on the left side of the inner wall of the guide sleeve and is abutted against the left end of the left deep groove ball bearing, two ends of a bearing spacing piece are respectively abutted against the right end of the left deep groove ball bearing and the left end of the right deep groove ball bearing, and a bearing pressing piece is arranged at the right end of the guide sleeve and is abutted against the right end of the right deep groove ball bearing; the drill rod bearing shaft core rotates relative to the guide sleeve. The utility model discloses make guide pin bushing and drilling rod, grinding head keep apart, prevent the high-speed pivoted grinding head wearing and tearing guide pin bushing, lead to the direction precision to become invalid.
Description
Technical Field
The utility model relates to a deep hole bores processing technology field, especially relates to a deep hole is guide pin bushing structure for grinding head.
Background
As most auxiliary accessories of deep hole processing equipment on the market are specially arranged for metal processing, for some non-metal workpieces, the auxiliary accessories cannot be directly placed on a general deep hole processing machine for processing, and some equipment on a machine tool needs to be changed, such as a drill bit, a guide sleeve, a chip removal system, a filtering system and the like.
Machining a cutting tool made of a quartz glass material is performed in a manner of polishing, that is, the cutting tool needs to be operated at a high speed and cut in extremely slow steps.
The grinding head of the existing deep hole drill is arranged at the head of a drill rod during grinding, and then the guide sleeve is directly sleeved outside the grinding head of the drill rod, so that if the existing deep hole drill is used for cutting quartz glass materials, the grinding head rotating at a high speed can grind the aperture of a positioning hole of the guide sleeve to be large, and the guiding precision is caused to be invalid.
Therefore, the prior art has yet to be developed.
SUMMERY OF THE UTILITY MODEL
In view of above-mentioned prior art's weak point, the utility model aims at providing a deep hole is guide pin bushing structure for grinding head aims at making guide pin bushing and drilling rod, grinding head keep apart, prevents the high-speed pivoted grinding head wearing and tearing guide pin bushing, leads to the direction precision to become invalid.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a guide sleeve structure for a deep-hole grinding head comprises a tubular guide sleeve, a drill rod bearing shaft core, a bearing spacer, a bearing pressing piece, a left deep groove ball bearing and a right deep groove ball bearing;
the inner wall of the drill rod bearing shaft core is used for mounting a drill rod, and a left deep groove ball bearing, a bearing spacer and a right deep groove ball bearing are sequentially sleeved on the outer wall of the drill rod bearing shaft core from left to right and then are accommodated in the guide sleeve;
a bearing stopping step is arranged on the left side of the inner wall of the guide sleeve and is abutted against the left end of the left deep groove ball bearing, two ends of a bearing spacing piece are respectively abutted against the right end of the left deep groove ball bearing and the left end of the right deep groove ball bearing, and a bearing pressing piece is arranged at the right end of the guide sleeve and is abutted against the right end of the right deep groove ball bearing;
the drill rod bearing shaft core rotates relative to the guide sleeve.
The bearing spacing piece comprises an inner washer and an outer washer sleeved outside the inner washer, and the bearing pressing piece comprises a first hollow bearing pressing piece and a second hollow bearing pressing piece;
the inner ring of the left deep groove ball bearing, the inner washer, the inner ring of the right deep groove ball bearing and the first bearing pressing piece are respectively rotatably sleeved on the outer wall of the drill rod bearing shaft core from left to right, and the outer ring of the left deep groove ball bearing, the outer washer, the outer ring of the right deep groove ball bearing and the second bearing pressing piece are respectively and fixedly arranged on the inner wall of the guide sleeve from left to right;
the left end of the outer ring of the left deep groove ball bearing is abutted with the bearing stopping step, the right end of the outer ring of the left deep groove ball bearing is abutted with the left end of the outer gasket, the right end of the outer gasket is abutted with the left end of the outer ring of the right deep groove ball bearing, and the right end of the outer ring of the right deep groove ball bearing is abutted with the left end of the second bearing clamping piece;
the right end of the inner ring of the left deep groove ball bearing is abutted with the left end of the inner gasket, the right end of the inner gasket is abutted with the left end of the inner ring of the right deep groove ball bearing, and the right end of the inner ring of the right deep groove ball bearing is abutted with the left end of the first bearing clamping piece;
gaps are arranged between the outer gasket and the inner gasket and between the second bearing pressure member and the first bearing pressure member;
the drill rod bearing shaft core, the inner ring of the left deep groove ball bearing, the inner washer, the inner ring of the right deep groove ball bearing and the first bearing clamping piece rotate in the guide sleeve relative to the guide sleeve.
Wherein the diameter of the inner wall of the drill rod supporting shaft core for installing the drill rod is 0.01-0.02 mm larger than the outer diameter of the drill rod,
the inner wall of the guide sleeve is provided with a limiting step on the left side of the bearing stopping step;
the drill rod bearing shaft core is characterized in that a limiting flange is convexly arranged on the left side of the outer wall of the drill rod bearing shaft core, and the limiting flange is clamped into the limiting step.
The inner wall of the guide sleeve is provided with a first thread on the outer side of the outer ring of the right deep groove ball bearing;
and the outer wall of the right side of the second shaft pressure-bearing member is convexly provided with an adjusting flange with the diameter larger than that of the inner wall of the guide sleeve, the outer wall of the left side of the second shaft pressure-bearing member is provided with a second thread, and the left side of the second shaft pressure-bearing member is accommodated in the guide sleeve and is spirally connected with the first thread through the second thread.
The outer wall of the drill rod bearing shaft core is provided with a third thread on the outer side of the inner ring of the right deep groove ball bearing;
and the inner wall of the first bearing clamping member is provided with a fourth thread, and the first bearing clamping member is sleeved outside the drill rod bearing shaft core and is connected with the third thread through the fourth thread.
And the right end of the inner wall of the drill rod bearing shaft core is provided with a horn chamfer.
The outer wall of the guide sleeve is convexly provided with a mounting flange on the left side, and the mounting flange is used for being connected with the guide sleeve seat.
The outer wall of the guide sleeve is further provided with a mounting conical surface on the left side of the mounting flange, and the mounting conical surface is used for being matched with the guide sleeve gland.
The utility model discloses a deep hole is guide pin bushing structure for grinding head through set up relative guide pin bushing pivoted drilling rod bearing axle core in the guide pin bushing, installation drilling rod in the drilling rod bearing axle core, the front end installation grinding head of drilling rod, drilling rod and grinding head can not directly contact with the guide pin bushing like this when high-speed rotation, and can not wear and tear the guide pin bushing, guarantees the direction precision of guide pin bushing, makes it be applicable to the drilling cutting processing of quartz glass material.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of a first embodiment of a guide sleeve structure for a deep-hole grinding head according to the present invention;
FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1;
FIG. 3 is an exploded view of the structure of FIG. 1;
FIG. 4 is a cross-sectional view of the structure of FIG. 1 in use;
FIG. 5 is a cross-sectional view of the guide sleeve of FIG. 2;
FIG. 6 is a schematic cross-sectional view of the drill rod support core of FIG. 2;
FIG. 7 is a schematic cross-sectional view of the second bearing member of FIG. 2;
FIG. 8 is a schematic cross-sectional view of the first bearing member of FIG. 2;
description of reference numerals:
100-guide sleeve structure, 1-guide sleeve, 11-bearing stop step, 12-limit step, 13-first thread, 14-mounting flange, 15-mounting conical surface, 2-drill rod bearing shaft core, 21-limit flange, 22-third thread, 23-bell chamfer, 3-bearing spacer, 31-inner gasket, 32-outer gasket, 4-bearing pressing piece, 41-first bearing pressing piece, 411-fourth thread, 42-second bearing pressing piece, 421-adjusting flange, 422-second thread screw, 5-left deep groove ball bearing, 51-outer ring of left deep groove ball bearing, 52-inner ring of left deep groove ball bearing, 6-right deep groove ball bearing, 61-outer ring of right deep groove ball bearing, 62-outer ring of right deep groove ball bearing, 200-drill rod, 300-grinding head, 400-guide sleeve seat and 500-guide sleeve gland.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) 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 drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "connected" may be a fixed connection or a removable connection, or may be integral therewith; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In a first embodiment, please refer to fig. 1 to 4, the present invention provides a guide sleeve structure 100 for a deep-hole polishing head, which includes a tubular guide sleeve 1, a drill rod supporting shaft core 2, a bearing spacer 3, a bearing pressing member 4, a left deep groove ball bearing 5, and a right deep groove ball bearing 6.
The inner wall of the drill rod bearing shaft core 2 is used for installing a drill rod 200, and the outer wall of the drill rod bearing shaft core 2 is sequentially sleeved with a left deep groove ball bearing 5, a bearing spacer 3 and a right deep groove ball bearing 6 from left to right and then is contained in the guide sleeve 1. A bearing stopping step 11 is arranged on the left side of the inner wall of the guide sleeve 1 and is abutted to the left end of the left deep groove ball bearing 5, two ends of a bearing spacing piece 3 are respectively abutted to the right end of the left deep groove ball bearing 5 and the left end of the right deep groove ball bearing 6, and a bearing pressing piece 4 is arranged on the right end of the guide sleeve 1 and is abutted to the right end of the right deep groove ball bearing 6; the drill rod bearing shaft core 2 rotates relative to the guide sleeve 1.
Namely the utility model discloses an axial installation has drilling rod 200 in the pipy drilling rod bearing axle core 2, and grinding head 300 is installed to the front end of drilling rod, then drilling rod bearing axle core 2 outer respectively the cover be equipped with left deep groove ball bearing 5, bearing spacer 3, right deep groove ball bearing 6 and form a whole subassembly, this whole subassembly then install in guide pin bushing 1. Because left deep groove ball bearing 5, right deep groove ball bearing 6's effect for grinding head 300, drilling rod 200 rotate with drilling rod bearing axle core 2 guide pin bushing 1 is high-speed together relatively, like this, owing to with drilling rod bearing axle core 2's isolation effect, when grinding head 300 carries out drilling cutting man-hour to the quartz glass material, grinding head 300, drilling rod 200 can not contact with guide pin bushing 1, can not wear and tear like this and lead 1 cover, have guaranteed the direction precision of guide pin bushing 1 in the course of working, make the utility model discloses a guide pin bushing structure 100 can be applicable to the drilling cutting processing of quartz glass material.
The utility model discloses a left deep groove ball bearing 5, right deep groove ball bearing 6 all adopt the bronze material to improve the wearability, extend the life of guide pin bushing structure 100.
Preferably, the utility model discloses a drilling rod bearing axle core 2 is used for installing the inner wall diameter ratio drilling rod 200 external diameter of drilling rod 200 and is big 0.01mm ~ 0.02mm, can make drilling rod 200 axial displacement to the change of stress plays the cushioning effect in the adaptation course of working.
Specifically, as shown in fig. 2 and 3, the bearing spacer 3 of the present invention includes an inner washer 31 and an outer washer 32 sleeved outside the inner washer 31, and the bearing pressing member 4 includes a first hollow bearing pressing member 41 and a second hollow bearing pressing member 42.
The inner ring 52 of the left deep groove ball bearing 5, the inner washer 31, the inner ring 62 of the right deep groove ball bearing 6 and the first bearing pressure member 41 are respectively rotatably sleeved on the outer wall of the drill rod bearing shaft core 2 from left to right, and the outer ring 51 of the left deep groove ball bearing 5, the outer washer 32, the outer ring 61 of the right deep groove ball bearing 6 and the second bearing pressure member 42 are respectively fixedly arranged on the inner wall of the guide sleeve 1 from left to right.
The left end of the outer ring 51 of the left deep groove ball bearing 5 is abutted with the bearing stopping step 11, the right end of the outer ring 51 of the left deep groove ball bearing 5 is abutted with the left end of the outer gasket 32, the right end of the outer gasket 32 is abutted with the left end of the outer ring 61 of the right deep groove ball bearing 6, and the right end of the outer ring 61 of the right deep groove ball bearing 6 is abutted with the left end of the second shaft pressure bearing member 42.
The right end of the inner ring 52 of the left deep groove ball bearing 5 is abutted with the left end of the inner gasket 31, the right end of the inner gasket 31 is abutted with the left end of the inner ring 62 of the right deep groove ball bearing 6, and the right end of the inner ring 62 of the right deep groove ball bearing 6 is abutted with the left end of the first bearing clamping piece 41.
Namely, the fixation of the two deep groove ball bearings in the guide sleeve is as follows: the outer ring 51 of the left deep groove ball bearing 5 abuts against the bearing stop step 11 on the inner wall of the guide sleeve, the inner ring and the outer ring between the left deep groove ball bearing 5 and the right deep groove ball bearing 6 abut against the inner gasket 31 and the outer gasket 32 respectively, and the right end of the right deep groove ball bearing 6 abuts against the inner ring 62 and the outer ring 61 respectively by the first bearing pressing piece 41 and the second bearing pressing piece 42. The installation of the left deep groove ball bearing 5 and the right deep groove ball bearing 6 in the guide sleeve 1 is fixed, the bearing 6 is prevented from loosening in the machining process, and meanwhile, the rotation of the drill rod bearing shaft core 2 relative to the guide sleeve 1 is realized.
Gaps are arranged between the outer gasket 32 and the inner gasket 31, and between the second pressure bearing member 42 and the first pressure bearing member 41; the drill rod bearing shaft core 2, the inner ring 52 of the left deep groove ball bearing 5, the inner washer 31, the inner ring 62 of the right deep groove ball bearing 6 and the first bearing pressure-bearing member 41 rotate in the guide sleeve 1 relative to the guide sleeve 1. Because the inner washer 31 and the first bearing clamping member 41 rotate at a high speed along with the drill rod bearing shaft core 2, a gap is required between the outer washer 32 and the inner washer 31, and between the second bearing clamping member 42 and the first bearing clamping member 41, so that abrasion is prevented.
As shown in fig. 5 and 6, the inner wall of the guide sleeve 1 of the present invention is further provided with a limit step 12 on the left side of the bearing stop step 11; and a limiting flange 21 is convexly arranged on the left side of the outer wall of the drill rod bearing shaft core 2, and the limiting flange 21 is clamped into the limiting step 12. The arrangement of the limiting flange 21 and the limiting step 12 prevents the drill rod bearing shaft core 2 from axially dropping out of the guide sleeve 1.
Preferably, as shown in fig. 5 and 7, the inner wall of the guide sleeve 1 of the present invention is provided with a first thread 13 on the outer side of the outer ring 61 of the right deep groove ball bearing 6; an adjusting flange 421 with a diameter larger than that of the inner wall of the guide sleeve 1 is convexly arranged on the outer wall of the right side of the second shaft pressure retaining member 42, a second thread 422 is arranged on the outer wall of the left side of the second shaft pressure retaining member 42, and the left side of the second shaft pressure retaining member 42 is contained in the guide sleeve 1 and is connected with the first thread 13 through a second thread screw 422. Namely, the second bearing pressure-bearing member 42 is in threaded connection with the guide sleeve 1 at the right end of the guide sleeve 1 and presses the outer ring 61 of the right deep groove ball bearing 6. The provision of the adjustment flange 421 facilitates the mounting of the second bearing pressure member 42.
As shown in fig. 6 and 8, the outer wall of the drill rod bearing shaft core 2 of the present invention is provided with a third thread 22 outside the inner ring 62 of the right deep groove ball bearing 6; the inner wall of the first bearing clamping member 41 is provided with a fourth thread 411, and the first bearing clamping member 41 is sleeved outside the drill rod bearing shaft core 2 and is connected with the third thread 22 through the fourth thread 411. Namely, the first bearing pressing member 41 is in threaded connection with the drill rod bearing shaft core 2 at the right end of the drill rod bearing shaft core 2 and presses the inner ring 62 of the right deep groove ball bearing 6.
Preferably, as shown in fig. 6, the right end of the inner wall of the drill rod bearing shaft core 2 is provided with a bell-mouth chamfer 23. The flare chamfer 23 facilitates installation of the drill rod 200.
With continuing reference to fig. 4 and 5, the outer wall of the guide sleeve 1 of the present invention is provided with a mounting flange 14 protruding from the left side, and the mounting flange 14 is used for connecting with the guide sleeve seat 400. Mounting flange 14 facilitates a quick-install connection with guide sleeve mount 400.
The outer wall of the guide sleeve 1 is further provided with a mounting conical surface 15 on the left side of the mounting flange 14, and the mounting conical surface 15 is used for being matched with the guide sleeve gland 500. The installation conical surface 15 facilitates the pressing fit of the guide sleeve 1 and the guide sleeve gland 500.
The embodiment of the utility model provides a deep hole is guide pin bushing structure 100 for grinding head, through set up guide pin bushing 1 pivoted drilling rod bearing axle core 2 relatively in guide pin bushing 1, installation drilling rod 200 in drilling rod bearing axle core 2, drilling rod 200's front end installation grinding head 300, drilling rod 200 is when high-speed rotation like this, drilling rod 200 and grinding head 300 can not directly contact with guide pin bushing 1, and can not wear and tear guide pin bushing 1, has guaranteed guide pin bushing 1's direction precision, makes this real neotype guide pin bushing structure 100 be applicable to the drilling cutting processing of quartz glass material.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (9)
1. A guide sleeve structure for a deep-hole grinding head is characterized by comprising a tubular guide sleeve, a drill rod bearing shaft core, a bearing spacer, a bearing pressing piece, a left deep groove ball bearing and a right deep groove ball bearing;
the inner wall of the drill rod bearing shaft core is used for mounting a drill rod, and a left deep groove ball bearing, a bearing spacer and a right deep groove ball bearing are sequentially sleeved on the outer wall of the drill rod bearing shaft core from left to right and then are accommodated in the guide sleeve;
a bearing stopping step is arranged on the left side of the inner wall of the guide sleeve and is abutted against the left end of the left deep groove ball bearing, two ends of a bearing spacing piece are respectively abutted against the right end of the left deep groove ball bearing and the left end of the right deep groove ball bearing, and a bearing pressing piece is arranged at the right end of the guide sleeve and is abutted against the right end of the right deep groove ball bearing;
the drill rod bearing shaft core rotates relative to the guide sleeve.
2. The guide sleeve structure for the deep hole grinding head according to claim 1, wherein the bearing spacing piece comprises an inner washer and an outer washer sleeved outside the inner washer, and the bearing pressing piece comprises a first hollow bearing pressing piece and a second hollow bearing pressing piece;
the inner ring of the left deep groove ball bearing, the inner washer, the inner ring of the right deep groove ball bearing and the first bearing pressing piece are respectively rotatably sleeved on the outer wall of the drill rod bearing shaft core from left to right, and the outer ring of the left deep groove ball bearing, the outer washer, the outer ring of the right deep groove ball bearing and the second bearing pressing piece are respectively and fixedly arranged on the inner wall of the guide sleeve from left to right;
the left end of the outer ring of the left deep groove ball bearing is abutted with the bearing stopping step, the right end of the outer ring of the left deep groove ball bearing is abutted with the left end of the outer gasket, the right end of the outer gasket is abutted with the left end of the outer ring of the right deep groove ball bearing, and the right end of the outer ring of the right deep groove ball bearing is abutted with the left end of the second bearing clamping piece;
the right end of the inner ring of the left deep groove ball bearing is abutted with the left end of the inner gasket, the right end of the inner gasket is abutted with the left end of the inner ring of the right deep groove ball bearing, and the right end of the inner ring of the right deep groove ball bearing is abutted with the left end of the first bearing clamping piece;
gaps are arranged between the outer gasket and the inner gasket and between the second bearing pressure member and the first bearing pressure member;
the drill rod bearing shaft core, the inner ring of the left deep groove ball bearing, the inner washer, the inner ring of the right deep groove ball bearing and the first bearing clamping piece rotate in the guide sleeve relative to the guide sleeve.
3. The guide sleeve structure for the deep hole grinding head according to claim 1, wherein the diameter of the inner wall of the drill rod bearing shaft core for mounting the drill rod is 0.01 mm-0.02 mm larger than the outer diameter of the drill rod.
4. The guide sleeve structure for the deep-hole grinding head according to claim 2, wherein a limit step is further arranged on the inner wall of the guide sleeve on the left side of the bearing stop step;
the drill rod bearing shaft core is characterized in that a limiting flange is convexly arranged on the left side of the outer wall of the drill rod bearing shaft core, and the limiting flange is clamped into the limiting step.
5. The guide sleeve structure for the deep-hole grinding head according to claim 2, wherein the inner wall of the guide sleeve is provided with first threads on the outer side of the outer ring of the right deep groove ball bearing;
and the outer wall of the right side of the second shaft pressure-bearing member is convexly provided with an adjusting flange with the diameter larger than that of the inner wall of the guide sleeve, the outer wall of the left side of the second shaft pressure-bearing member is provided with a second thread, and the left side of the second shaft pressure-bearing member is accommodated in the guide sleeve and is spirally connected with the first thread through the second thread.
6. The guide sleeve structure for the deep-hole grinding head according to claim 2, wherein a third thread is arranged on the outer wall of the drill rod bearing shaft core and outside an inner ring of the right deep groove ball bearing;
and the inner wall of the first bearing clamping member is provided with a fourth thread, and the first bearing clamping member is sleeved outside the drill rod bearing shaft core and is connected with the third thread through the fourth thread.
7. The guide sleeve structure for the deep hole grinding head according to claim 6, wherein a bell-mouth chamfer is arranged at the right end of the inner wall of the drill rod bearing shaft core.
8. The guide sleeve structure for the deep hole grinding head according to claim 1, wherein a mounting flange is convexly arranged on the left side of the outer wall of the guide sleeve and is used for being connected with the guide sleeve seat.
9. The guide sleeve structure for the deep hole grinding head according to claim 8, wherein the outer wall of the guide sleeve is further provided with a mounting conical surface on the left side of the mounting flange, and the mounting conical surface is used for being matched with the guide sleeve gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922069453.0U CN211332739U (en) | 2019-11-26 | 2019-11-26 | Guide sleeve structure for deep hole grinding head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922069453.0U CN211332739U (en) | 2019-11-26 | 2019-11-26 | Guide sleeve structure for deep hole grinding head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211332739U true CN211332739U (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922069453.0U Active CN211332739U (en) | 2019-11-26 | 2019-11-26 | Guide sleeve structure for deep hole grinding head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211332739U (en) |
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2019
- 2019-11-26 CN CN201922069453.0U patent/CN211332739U/en active Active
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