CN219026697U - Porous processing frock clamp of thin wall casing - Google Patents
Porous processing frock clamp of thin wall casing Download PDFInfo
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- CN219026697U CN219026697U CN202223140281.XU CN202223140281U CN219026697U CN 219026697 U CN219026697 U CN 219026697U CN 202223140281 U CN202223140281 U CN 202223140281U CN 219026697 U CN219026697 U CN 219026697U
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- wall shell
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- mandrel
- hole
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model discloses a fixture for machining a plurality of holes in a thin-wall shell, which comprises a mandrel base, a gland, bolts and the thin-wall shell, wherein the mandrel base is provided with a plurality of holes; the mandrel base is coaxially arranged on a machine tool rotary worktable, and the top of the mandrel base is provided with a threaded hole; the thin-wall shell is sleeved outside the upper end of the mandrel base, and a central inner hole with the upper end and the lower end penetrating is formed in the thin-wall shell; a gland is sleeved in the upper end opening of the thin-wall shell, and an axle center slot hole which is communicated with the outside is formed in the gland; the bolt passes through the axle center slot hole of the gland and the center inner hole of the thin-wall shell until the lower end of the bolt is screwed into the threaded hole of the mandrel base, and the end face of the head of the bolt is tightly pressed on the gland to tightly fix the thin-wall shell on the mandrel base. The fixture for processing the multiple holes of the thin-wall shell is convenient and quick to clamp and high in production efficiency; the whole processing process only needs one-time clamping, so that errors brought to processing precision by reference transformation are reduced, and the processing quality of products is ensured.
Description
Technical Field
The utility model relates to a fixture, in particular to a fixture for machining multiple holes in a thin-wall shell.
Background
The shell is a container or a thin pipe fitting with similar thin wall, and the cutting force is small during processing. In order to meet the assembly and use requirements, various axial or radial round holes or kidney-shaped holes with different sizes are processed on the steel plate. The traditional processing method is to finish the processing in multiple steps on a milling machine or a drilling machine. However, when the requirement on the machining size precision or the position precision of each hole is high, the traditional machining method needs to be clamped for many times, the reference transformation possibly causes errors to the machining precision, the product quality is difficult to ensure, and the rejection rate is not low; the speed of the dress clamp is low when the thin-wall shell is replaced, the production efficiency is to be improved, and the processing efficiency is low.
Disclosure of Invention
In view of the above, the utility model provides a tool fixture for machining a plurality of holes in a thin-wall shell.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a thin-wall shell multi-hole machining fixture comprises a mandrel base, a gland, bolts and a thin-wall shell; the mandrel base is coaxially arranged on a machine tool rotary workbench, and a threaded hole is formed in the top of the mandrel base; the thin-wall shell is sleeved outside the upper end of the mandrel base, and a central inner hole with the upper end and the lower end penetrating is formed in the thin-wall shell; a gland is sleeved in the upper end opening of the thin-wall shell, the gland is in a cross-shaped disc cover shape, and an axle center slot hole communicated with the outside is formed in the gland; the bolt penetrates through the axle center slotted hole of the gland and the center inner hole of the thin-wall shell until the lower end of the bolt is screwed into the threaded hole of the mandrel base, and the end face of the head of the bolt is tightly pressed on the gland to tightly fix the thin-wall shell on the mandrel base.
Preferably, the mandrel base is of a hollow stepped shaft structure, and the hollow stepped shaft structure is composed of a lower section large flange, a middle section transition support cylinder and an upper section mandrel small cylinder, wherein the outer diameter of the lower section large flange, the middle section transition support cylinder and the upper section mandrel small cylinder are sequentially reduced; the bottom surface of the large flange is a positioning reference surface, and the large flange at the lower section is arranged on a rotary worktable of the machine tool; a threaded hole is formed in the center of the small mandrel cylinder; the thin-wall shell is sleeved on the cylindrical surface of the small cylinder of the mandrel in a matched mode through the inner hole in the center of the thin-wall shell.
Preferably, the cylindrical surface of the small mandrel cylinder is perpendicular to the bottom surface of the large flange, and the end surface of the shaft shoulder of the small mandrel cylinder is parallel to the bottom surface of the large flange.
Preferably, a large counter bore is formed in the bottom surface of the large flange.
Preferably, the upper section of the outer circle of the gland is a cylindrical surface, the lower section of the outer circle of the gland is a conical surface, and the outer diameter of the cylindrical surface of the gland is larger than the outer diameter of the conical surface of the gland, so that a flange is formed; the flange cover of the gland is arranged on the upper end opening of the thin-wall shell.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The fixture and the method for machining the multiple holes of the thin-wall shell are innovative in design, convenient and quick in clamping, high in production efficiency and suitable for mass production;
(2) The whole processing process only needs one-time clamping, so that errors brought to processing precision by reference transformation are reduced; the machining precision and the assembly precision of each positioning element of the device are reasonably designed, and the machining quality of products is well ensured.
Drawings
FIG. 1 is an overall front view of the present utility model;
FIG. 2 is a front view of a mandrel base of the present utility model;
FIG. 3 is a front view of a gland according to the present utility model;
FIG. 4 is a top plan view of the gland of the present utility model;
fig. 5 is a schematic view of a thin-walled housing structure according to the present utility model.
In the figure: 1. a mandrel base; 11. a large flange; 12. a transition support cylinder; 13. a small cylinder of the mandrel; 14. a threaded hole; 2. a gland; 21. a flange; 22. an axial slot; 3. a bolt; 4. a thin-walled shell.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Examples:
as shown in figures 1-5, the device mainly comprises a mandrel base 1, a gland 2, a bolt 3 and a thin-wall shell 4. The mandrel base 1 is coaxially arranged on a machine tool rotary table, the central inner hole of the thin-wall shell 4 is sleeved on the mandrel small cylinder 13 of the mandrel base 1 in a clearance fit manner, the flange 21 of the gland 2 is covered on the top opening of the thin-wall shell 4, the bolt 3 penetrates through the axial slot hole of the gland 2 and the central inner hole of the thin-wall shell 4 until the lower end of the bolt 3 is screwed into the central threaded hole 14 at the upper end of the mandrel base 1, and the end face of the head of the bolt 3 presses the gland 2 to move downwards so as to fasten the thin-wall shell 4 on the mandrel base 1.
The mandrel base 1 is a hollow stepped shaft, and the mandrel base 1 is sequentially provided with a large flange 11, a transition support cylinder 12 and a mandrel small cylinder 13, wherein the outer diameter of the large flange is gradually reduced, from bottom to top. The large flange 11 is formed by the large end with larger diameter and thinner thickness, and the bottom surface of the large flange 11 is used as a positioning reference surface of the whole device, so that the machining precision is high, and the large flange is used for being installed with a workbench. The middle section is a transition support cylinder 12. The cylindrical surface and the shaft shoulder end surface of the upper section mandrel small cylinder 13 are used as the positioning surfaces of the thin-wall shell 4, the cylindrical surface of the mandrel small cylinder 13 is designed with the perpendicularity requirement on the positioning reference surface and the parallelism requirement of the shaft shoulder end surface on the positioning reference surface, and the dimension processing precision is higher. The cylindrical surface of the mandrel small cylinder 13 is matched with the inner hole of the thin-wall shell 4 by adopting a small clearance to guide the thin-wall shell 4, so that the machining precision of each hole of the thin-wall shell 4 can be well ensured. The shoulder of the small mandrel cylinder 13 is provided with a tool retracting groove, so that the interference between the corner and the edge of the shell can be avoided; the edge at the intersection of the upper end surface of the mandrel small cylinder 13 and the small cylindrical surface is designed to be a long chamfer so as to be quickly led in when the thin-wall shell 4 is clamped. The inner hole of the mandrel base 1 is a stepped through hole. The bottom surface of the large flange 11 is provided with a large counter bore with larger diameter and shallower height, so that the contact surface with a machine tool rotary worktable can be reduced, clamping is more stable, the grinding processing range of the contact surface can be reduced, and the processing cost is saved. The middle larger round hole of the transition support cylinder 12 is for reducing. The top threaded hole 14 of the mandrel small cylinder 13 is used for connection when the bolt 3 presses the thin-wall shell 4.
The gland 2 is a cross-shaped disc cover-shaped part, 4 notches are uniformly milled on the gland 2 to avoid a cutter in order to facilitate the processing of 4 axial uniform holes on the conical surface of the thin-wall shell 4, one notch is radially milled to the axis to form an axis slot 22, and the dimension of the axis slot 22 is slightly larger than the diameter of a bolt passing through the position. The design of the notch and the axle center slot 22 ensures that the bolt 3 does not need to be taken out from the base when the thin-wall shell 4 and the gland 2 are assembled and disassembled, and only the length of the bolt 3 which is withdrawn from the base is enough for the gland 2 to be pulled out from the side surface of the thin-wall shell 4, thereby saving the alignment time when the bolt 3 is screwed into the base and improving the clamping speed. The upper section of the outer circle of the gland 2 is a cylindrical surface, the lower section of the outer circle of the gland 2 is a conical surface, the outer diameter of the cylindrical surface of the gland 2 is larger than that of the conical surface of the gland 2, and a flange 21 is formed. When the bolt 3 is screwed down, the flange 21 of the gland 2 presses the upper end face of the thin-wall shell 4 to firmly fasten the thin-wall shell 4 on the mandrel base 1, thereby realizing the clamping of the thin-wall shell 4.
Referring to fig. 5, a in the thin-wall shell 4 is 4 axial uniform holes to be processed, b is 4 radial uniform holes to be processed, and c is 3 radial uniform kidney-shaped holes to be processed.
The embodiment of the utility model is as follows:
during the first clamping, as shown in fig. 1, a mandrel base 1 is arranged on a rotary table of a machine tool, so that the mandrel base 1 and the rotary table are coaxial; the thin-wall shell 4 is sleeved into the mandrel small cylinder 13 of the mandrel base 1, the thin-wall shell 4 is assembled in place by lightly rotating, and the bottom surface of the thin-wall shell 4 is attached to the shaft shoulder end surface of the mandrel small cylinder 13; then, the gland 2 is covered on the upper end of the thin-wall shell 4, then the bolt 3 sequentially penetrates through the axle center slotted hole 22 of the gland 2 and the central inner hole of the thin-wall shell 4 until the lower end of the bolt 3 is screwed into the threaded hole 14 of the mandrel base 1, and the bolt 3 is screwed to fasten the shell on the mandrel base 1.
In the machining process, a five-axis horizontal machining center is taken as an example, after the thin-wall shell 4 is clamped, the positions of a cutter arranged on a main shaft of a machine tool are adjusted according to the requirements of a drawing, and 3 radial uniformly distributed kidney-shaped groove c holes are machined; and after the first kidney-shaped groove c hole is machined, the workbench rotates around the center of the workbench for 120 degrees to machine a second hole, and a third hole is machined in sequence. And after the machining of the C holes of the waist-shaped grooves is finished, replacing the cutter, and adjusting the position of the cutter to machine 4 uniformly distributed radial b holes. After the first radial b hole is machined, the workbench rotates around the center of the workbench by 90 degrees to machine a second hole, and a third hole and a fourth hole are machined in sequence. After the radial holes are machined, the workbench carries the tool clamp and the shell to radially and clockwise rotate by 90 degrees towards the main shaft direction to machine 4 uniformly distributed axial holes a. Changing a cutter, adjusting the position of the cutter according to the drawing requirement to process a first hole a, and rotating a workbench around the center of the workbench by 90 degrees to process a second hole and sequentially process a third hole and a fourth hole after the first hole a is processed. After all the axial holes are machined, the workbench carries the tool clamp and the shell to rotate 90 degrees anticlockwise in the radial direction and return to the initial position. At this time, after all holes are machined, the bolts 3 are unscrewed to proper positions without being separated from the mandrel base 1, and at this time, the gland 2 is pulled out from the side, and the thin-walled shell 4 is quickly taken out from the upper part. When the thin-wall shell is clamped for the second time, the thin-wall shell is sleeved on the mandrel small cylinder 13 of the mandrel base 1 from the top, the gland 2 is inserted into the side face of the mandrel slot 22 from the side face of the mandrel slot to cover the upper end of the thin-wall shell, and the bolt 3 is screwed, so that the quick installation can be realized. The steps are repeated in sequence, so that batch production can be realized.
The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.
Claims (5)
1. A fixture for machining a thin-wall shell through multiple holes comprises a mandrel base (1), a gland (2), bolts (3) and a thin-wall shell (4); the automatic feeding device is characterized in that the mandrel base (1) is coaxially arranged on a machine tool rotary workbench, and a threaded hole (14) is formed in the top of the mandrel base (1); the thin-wall shell (4) is sleeved outside the upper end of the mandrel base (1), and a central inner hole with the upper end and the lower end penetrating is formed in the thin-wall shell (4); a gland (2) is sleeved in the upper end opening of the thin-wall shell (4), the gland (2) is in a cross-shaped disc cover shape, and an axle center slot hole (22) communicated with the outside is formed in the gland (2); the bolt (3) penetrates through an axle center slot hole (22) of the pressing cover (2) and a central inner hole of the thin-wall shell (4) until the lower end of the bolt (3) is screwed into a threaded hole (14) of the mandrel base (1), and the end face of the head of the bolt (3) is tightly pressed and connected onto the pressing cover (2) to tightly fix the thin-wall shell (4) on the mandrel base (1).
2. The fixture for machining the thin-wall shell porous according to claim 1 is characterized in that the mandrel base (1) is of a hollow stepped shaft structure, and the hollow stepped shaft structure is composed of a lower section large flange (11), a middle section transition support cylinder (12) and an upper section mandrel small cylinder (13) with the outer diameters decreasing in sequence; the bottom surface of the large flange (11) is a positioning reference surface, and the lower large flange (11) is arranged on a machine tool rotary workbench; a threaded hole (14) is formed in the center of the small mandrel cylinder (13); the thin-wall shell (4) is sleeved on the cylindrical surface of the mandrel small cylinder (13) in a matched mode through the central inner hole of the thin-wall shell.
3. The thin-wall shell multi-hole machining tool clamp according to claim 2, wherein the cylindrical surface of the small mandrel cylinder (13) is perpendicular to the bottom surface of the large flange (11), and the shoulder end surface of the small mandrel cylinder (13) is parallel to the bottom surface of the large flange (11).
4. A thin-walled casing multi-hole machining tool fixture according to claim 2 or 3, characterized in that the bottom surface of the large flange (11) is provided with a large counter bore.
5. The thin-wall shell multi-hole machining fixture according to claim 1, wherein the upper section of the outer circle of the gland (2) is a cylindrical surface, the lower section of the outer circle of the gland is a conical surface, the outer diameter of the cylindrical surface of the gland (2) is larger than the outer diameter of the conical surface of the gland, and a flange (21) is formed; the flange (21) of the gland (2) is covered on the upper end opening of the thin-wall shell (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223140281.XU CN219026697U (en) | 2022-11-25 | 2022-11-25 | Porous processing frock clamp of thin wall casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223140281.XU CN219026697U (en) | 2022-11-25 | 2022-11-25 | Porous processing frock clamp of thin wall casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219026697U true CN219026697U (en) | 2023-05-16 |
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ID=86293157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223140281.XU Active CN219026697U (en) | 2022-11-25 | 2022-11-25 | Porous processing frock clamp of thin wall casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219026697U (en) |
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2022
- 2022-11-25 CN CN202223140281.XU patent/CN219026697U/en active Active
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