CN216575722U - Sliding sleeve milling step groove indexing fixture - Google Patents
Sliding sleeve milling step groove indexing fixture Download PDFInfo
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- CN216575722U CN216575722U CN202123445437.0U CN202123445437U CN216575722U CN 216575722 U CN216575722 U CN 216575722U CN 202123445437 U CN202123445437 U CN 202123445437U CN 216575722 U CN216575722 U CN 216575722U
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- sliding sleeve
- positioning
- sleeve
- indexing
- rotary table
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Abstract
The utility model discloses a sliding sleeve mills step groove indexing fixture, its characterized in that: comprises a rotary table, an indexing driving mechanism, a sliding sleeve positioning sleeve, a pressing plate and an anti-rotation pressing block; the indexing driving mechanism is connected with the rotary table and is used for driving the rotary table to rotate in an indexing manner; the sliding sleeve positioning sleeve is fixed on the rotary table, and a step positioning hole is formed in the sliding sleeve positioning sleeve; the step positioning hole comprises an upper hole section, a step surface and a lower hole section; the upper hole section is used for concentrically positioning the sliding sleeve after the sliding sleeve is inserted, and the step surface is used for supporting the lower end surface of the sliding sleeve; the pressing plate is used for pressing the upper end face of the sliding sleeve; should prevent changeing the briquetting and be located sliding sleeve position sleeve and detachably fixes on the revolving stage, and should prevent changeing the briquetting and have on the briquetting and be used for preventing with the internal tooth of sliding sleeve or positioning tooth complex tooth. The utility model discloses be exclusively used in the sliding sleeve and fix a position the clamping when milling the step groove, it is big to reduce intensity of labour, can guarantee the relative position degree after four step groove processing of this sliding sleeve to can promote production efficiency greatly.
Description
Technical Field
The utility model relates to a sliding sleeve mills step groove indexing fixture.
Background
Referring to fig. 1-2, the sliding sleeve (N) is provided with a plurality of standard internal teeth (N-3) on the inner wall of the sliding sleeve (N) in the circumferential direction, and four positioning teeth (N-4) which are uniformly distributed on the inner wall of the sliding sleeve (N) in the circumferential direction, wherein stepped grooves (N-41) are milled on the upper ends of the four positioning teeth (N-4). The original processing mode is that the sliding sleeve (N) is fixed on a fixture and is kept immovable, a step groove (N-41) needs to be processed each time, and then a milling machine (a rocker arm milling machine) is manually operated to align the milling cutter to the next positioning tooth (N-4). However, the mode has the defects of high labor intensity and low processing efficiency, and simultaneously, the milling cutter is very difficult to control to a precise position, so that the relative position precision of the four step grooves (N-41) of the sliding sleeve (N) after processing is reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned defect problem or a plurality of defect problems that exist among the prior art, the utility model provides a sliding sleeve mills step groove indexing fixture.
In order to achieve the above object, the utility model provides a sliding sleeve mills step groove indexing fixture, its characterized in that: comprises a rotary table, an indexing driving mechanism, a sliding sleeve positioning sleeve, a pressing plate and an anti-rotation pressing block; the indexing driving mechanism is connected with the rotary table and is used for driving the rotary table to rotate in an indexing manner; the sliding sleeve positioning sleeve is fixed on the rotary table, and a step positioning hole is formed in the sliding sleeve positioning sleeve; the step positioning hole comprises an upper hole section, a step surface and a lower hole section; the upper hole section is used for concentrically positioning the sliding sleeve after the sliding sleeve is inserted, and the step surface is used for supporting the lower end surface of the sliding sleeve; the pressing plate is detachably fixed on the sliding sleeve positioning sleeve and is used for pressing the upper end face of the sliding sleeve; the anti-rotation pressing block is positioned in the sliding sleeve positioning sleeve and detachably fixed on the rotary table, and the anti-rotation pressing block is provided with anti-rotation teeth used for being matched with the internal teeth or/and the positioning teeth on the sliding sleeve.
By adopting the scheme, when clamping, the sliding sleeve is inserted into the upper hole section of the sliding sleeve positioning sleeve, the step surface is in surface contact fit with the lower end surface of the sliding sleeve and horizontally supports the lower end surface of the sliding sleeve, and the inner center and the height of the sliding sleeve are accurately positioned; the pressing plate is fixed on the sliding sleeve positioning sleeve and compresses the upper end face of the sliding sleeve, the anti-rotation teeth of the anti-rotation pressing block are matched with the inner teeth or the positioning teeth of the sliding sleeve, then the anti-rotation pressing block is fixed on the rotary table, the sliding sleeve is accurately positioned and compressed and is limited to rotate relative to the rotary table, and meanwhile, the anti-rotation pressing block also prevents the sliding sleeve and the sliding sleeve positioning sleeve from rotating relative to each other. During machining, the milling cutter K on the milling machine spindle is just above one of the positioning teeth of the sliding sleeve, and the milling step groove machining is realized by starting the machine tool to work, feeding the milling cutter K downwards and rotating the milling cutter K. And after the machining is finished, the milling machine is started again to enable the milling cutter K on the main shaft to move upwards and retreat to a certain height, the indexing driving mechanism is started again to work, the indexing driving mechanism drives the rotary table to perform accurate indexing motion, the adjacent next positioning tooth of the sliding sleeve is right positioned under the milling cutter K on the main shaft of the milling machine, then the machine tool works again and drives the milling cutter K to perform downward feeding and rotating motion to machine the next step groove, and then the machine tool works repeatedly to finish the milling machining in sequence. Therefore, the sliding sleeve can be specially used for positioning and clamping when the sliding sleeve is milled with step grooves, and after one part is milled, the sliding sleeve can be automatically indexed by the indexing driving mechanism to be sequentially indexed to the milling cutter to be accurately machined at a fixed point, so that the labor intensity can be reduced, the production efficiency can be improved, and the relative position degree of the sliding sleeve after four step grooves are machined can be ensured.
Preferably, the pressure plate is fixed on the upper surface of the sliding sleeve positioning sleeve through a first bolt.
Preferably, the rotation-preventing pressing block is fixed on the turntable by a second bolt.
Preferably, the indexing drive mechanism is a pneumatic indexing disc.
As another preference, the indexing drive mechanism employs a cam indexer.
Further, the rotary table is provided with a ring table which is used for being matched with the lower hole section to be concentrically positioned. The rotary table and the sliding sleeve positioning sleeve can be ensured to be fixed concentrically, and the sliding sleeve is ensured to keep rotating concentrically with the rotary table during indexing rotation.
The utility model discloses beneficial effect:
firstly, the utility model can be specially used for positioning and clamping the sliding sleeve when each step groove is milled, and after one part is milled, the sliding sleeve can be automatically indexed and rotated by the indexing driving mechanism to be sequentially indexed to the position of the milling cutter for fixed-point accurate processing, so that the labor intensity can be reduced, the production efficiency can be improved, and the relative position degree of the sliding sleeve after four step grooves are processed can be ensured;
secondly, the rotary table is provided with the ring table which is used for being matched with the lower hole section for concentric positioning, so that the rotary table and the sliding sleeve positioning sleeve can be ensured to be fixed concentrically, the sliding sleeve can keep concentric rotation with the rotary table when indexing rotation is carried out after clamping, and the positioning teeth of the sliding sleeve can be ensured to be accurately positioned and milled after indexing rotation;
third, the utility model discloses because the sliding sleeve inserts the downthehole center of step locating hole and the high location of sliding sleeve position sleeve, consequently can accurate control this sliding sleeve N's reference height through this step face, consequently can guarantee that the sliding sleeve mills behind its step groove at the graduation, the axial depth in each step groove can be completely unanimous.
Drawings
Fig. 1-2 are schematic structural views of a sliding sleeve.
Fig. 3 is a front view of the sliding sleeve milling step groove indexing fixture of the utility model.
Fig. 4 is a top view of the sliding sleeve milling step groove indexing fixture of the utility model.
Fig. 5 is a perspective view of the sliding sleeve milling step groove indexing fixture of the utility model.
Fig. 6 is the utility model discloses a front view when sliding sleeve mills step groove indexing fixture clamping sliding sleeve.
Fig. 7 is an enlarged view at a in fig. 6.
Fig. 8 is the utility model discloses a plan view when sliding sleeve mills step groove dividing anchor clamps clamping sliding sleeve.
Fig. 9 is a perspective view of the indexing fixture for milling a stepped groove in a sliding sleeve according to the present invention, when the sliding sleeve moves upward and moves back in place after the milling process is completed.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
example (b): referring to fig. 3-9, an indexing fixture for milling a step groove in a sliding sleeve comprises a rotary table 1, an indexing driving mechanism 2, a sliding sleeve positioning sleeve 3, a pressing plate 4 and an anti-rotation pressing block 5.
The indexing driving mechanism 2 is connected with the rotary table 1 and is used for driving the rotary table 1 to rotate in an indexing way.
In the present embodiment, the indexing drive mechanism 2 is a pneumatic indexing disk.
In the present embodiment, since the sliding sleeve mills four step grooves, the indexing drive mechanism 2 drives the turntable 1 to rotate 90 degrees at a time.
In other embodiments, when the sliding sleeve mills N (N is a positive integer greater than 2) step grooves, the indexing drive mechanism 2 drives the rotary table 1 to rotate 360/N degrees at a time.
In other embodiments, the indexing drive mechanism 2 is driven by a cam indexer or by a servo motor.
Specifically, the sliding sleeve positioning sleeve 3 is fixed on the upper surface of the turntable 1.
Referring to fig. 6-7, the sliding sleeve positioning sleeve 3 is provided with a step positioning hole 3-1 therein; the step positioning hole 3-1 comprises an upper hole section 3-11, a step surface 3-12 and a lower hole section 3-13; the upper hole section 3-11 is used for concentrically positioning the sliding sleeve N after being inserted, the lower end surface N-1 of the sliding sleeve N is in contact fit with the step surface 3-12, and the step surface 3-12 horizontally supports the lower end surface N-1 of the sliding sleeve N, so that the reference height of the sliding sleeve N can be accurately controlled through the step surface 3-12, and the axial depth of each step groove can be completely consistent after the sliding sleeve N is subjected to indexing milling.
The step positioning hole 3-1 of the sliding sleeve positioning sleeve 3 is concentric with the rotary table 1, so that the sliding sleeve N rotates concentrically with the rotary table 1 during rotation.
The pressing plate 4 is detachably fixed on the sliding sleeve positioning sleeve 3 and is used for pressing the upper end surface N-2 of the sliding sleeve N; the anti-rotation pressing block 5 is positioned in the sliding sleeve locating sleeve 3 and detachably fixed on the rotary table 1, and the anti-rotation pressing block 5 is provided with anti-rotation teeth 5-1 used for being matched with the inner teeth N-3 or the locating teeth N-4 of the sliding sleeve N.
Specifically, the anti-rotation teeth 5-1 are meshed with the inner teeth N-3 or the anti-rotation teeth 5-1 are meshed with or clamped with the positioning teeth N-4.
Referring to fig. 6-7, further, the turntable 1 has a ring table 1-1 thereon for concentric positioning in cooperation with the lower bore section 3-13. The turntable 1 and the sliding sleeve locating sleeve 3 can be ensured to be fixed concentrically, and the sliding sleeve N is ensured to keep rotating concentrically with the turntable 1 during indexing rotation.
Preferably, the pressing plate 4 is fixed on the upper surface of the sliding sleeve positioning sleeve 3 through a first bolt 6.
Preferably, the rotation-preventing pressing block 5 is fixed on the turntable 1 by a second bolt 7.
Specifically, the anti-rotation pressing block 5 is Z-shaped in appearance, and the anti-rotation teeth 5-1 are located at the distal end of the upper section of the anti-rotation pressing block 5.
In addition, the two pressing plates 4 are symmetrically distributed, so that the two sides of the upper end surface of the sliding sleeve can be symmetrically pressed.
Referring to fig. 6-7, when the utility model is used for clamping, the sliding sleeve N is firstly inserted into the upper hole section 3-11 of the sliding sleeve locating sleeve 3, the step surface 3-12 supports the lower end surface N-1 of the sliding sleeve N, and the inner center and the height of the sliding sleeve N are precisely located; fixing the pressing plate 4 on the sliding sleeve positioning sleeve 3 to compress the upper end surface N-2 of the sliding sleeve N, meshing and matching the anti-rotation teeth 5-1 of the anti-rotation pressing block 5 with the inner teeth N-3 or the positioning teeth N-4 of the sliding sleeve N, and then fixing the anti-rotation pressing block 5 on the turntable 1, wherein the sliding sleeve N and the turntable 1 are relatively fixed because the anti-rotation pressing block 5 is fixed on the turntable 1 and does not rotate relatively; at the moment, the sliding sleeve N is accurately positioned and compressed, and meanwhile, the sliding sleeve N and the sliding sleeve positioning sleeve 3 (the rotary table 1) cannot rotate relatively and can only rotate along with the sliding sleeve.
Referring to fig. 9, during machining, the milling cutter K on the milling machine spindle is positioned right above one of the positioning teeth N-4 of the sliding sleeve N, and the milling step groove N-41 is machined by starting the machine tool to feed downwards and rotating the milling cutter K. And after the machining is finished, the milling machine is started again to enable the milling cutter K on the main shaft to move upwards and retreat to a certain height, the indexing driving mechanism 2 is started again to work, the indexing driving mechanism 2 drives the rotary table 1 to perform accurate indexing motion, the adjacent next positioning tooth N-4 of the sliding sleeve N is just positioned right below the milling cutter K on the main shaft of the milling machine, then the machine tool works again and drives the milling cutter K to perform downward feeding and rotating motion to machine the next step groove N-41, and then the milling machining is finished sequentially by repeating the work. Therefore, the sliding sleeve can be specially used for positioning and clamping when the sliding sleeve is milled with step grooves, and after one part is milled, the sliding sleeve can be automatically indexed by the indexing driving mechanism to be sequentially indexed to the milling cutter to be accurately machined at a fixed point, so that the labor intensity can be reduced, the production efficiency can be improved, and the relative position degree of the sliding sleeve after four step grooves are machined can be ensured.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. The utility model provides a sliding sleeve mills step groove indexing fixture which characterized in that: comprises a rotary table (1), an indexing driving mechanism (2), a sliding sleeve locating sleeve (3), a pressing plate (4) and an anti-rotation pressing block (5);
the indexing driving mechanism (2) is connected with the rotary table (1) and is used for driving the rotary table (1) to rotate in an indexing manner;
the sliding sleeve positioning sleeve (3) is fixed on the rotary table (1), and a step positioning hole (3-1) is formed in the sliding sleeve positioning sleeve (3);
the step positioning hole (3-1) comprises an upper hole section (3-11), a step surface (3-12) and a lower hole section (3-13);
the upper hole section (3-11) is used for concentrically positioning the sliding sleeve (N) after being inserted, and the step surface (3-12) is used for supporting the lower end surface (N-1) of the sliding sleeve (N); the pressing plate (4) is detachably fixed on the sliding sleeve positioning sleeve (3) and is used for pressing the upper end face (N-2) of the sliding sleeve (N);
the anti-rotation pressing block (5) is positioned in the sliding sleeve positioning sleeve (3) and detachably fixed on the rotary table (1), and the anti-rotation pressing block (5) is provided with anti-rotation teeth (5-1) used for being matched with the internal teeth (N-3) or the positioning teeth (N-4) on the sliding sleeve (N).
2. The sliding sleeve milling step groove indexing fixture as claimed in claim 1, wherein: the pressing plate (4) is fixed on the upper surface of the sliding sleeve positioning sleeve (3) through a first bolt (6).
3. The sliding sleeve milling step groove indexing fixture as claimed in claim 1, wherein: the anti-rotation pressing block (5) is fixed on the rotary table (1) through a second bolt (7).
4. A sliding sleeve milling step groove indexing fixture as claimed in any one of claims 1-3, wherein: the indexing driving mechanism (2) adopts a pneumatic indexing disc.
5. A sliding sleeve milling step groove indexing fixture as claimed in any one of claims 1-3, wherein: the indexing driving mechanism (2) adopts a cam indexer.
6. A sliding sleeve milling step groove indexing fixture as claimed in any one of claims 1-3, wherein: the rotary table (1) is provided with a ring table (1-1) which is used for being matched with the lower hole section (3-13) to be concentrically positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123445437.0U CN216575722U (en) | 2021-12-31 | 2021-12-31 | Sliding sleeve milling step groove indexing fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123445437.0U CN216575722U (en) | 2021-12-31 | 2021-12-31 | Sliding sleeve milling step groove indexing fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216575722U true CN216575722U (en) | 2022-05-24 |
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ID=81631180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123445437.0U Active CN216575722U (en) | 2021-12-31 | 2021-12-31 | Sliding sleeve milling step groove indexing fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216575722U (en) |
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2021
- 2021-12-31 CN CN202123445437.0U patent/CN216575722U/en active Active
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