Adjustable eccentric drill handle for automatic lathe
By designing an adjustable clamping seat and adjustment seat structure, the problem of eccentricity of the drill handle and the unadjustable end surface parallelism in the heart-moving equipment is solved, which improves processing accuracy and reduces wear costs.
Patent Information
- Application Number
- CN202422184703.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-05
AI Technical Summary
In existing scheduling equipment, there is eccentricity during the installation of the drill handle, resulting in low dimensional accuracy of the machining parts, and the parallelism of the end face of the drill handle and the end face of the back shaft tool holder cannot be adjusted, which affects the machining accuracy.
An adjustable eccentric drill handle including a clamping seat, an adjustment seat and a drill bit mounting assembly is designed. The adjustable parallelism of the drill bit center axis and the drill handle end surface is achieved by providing a plurality of threaded holes and bolts, and equipped with a wear-resistant sleeve to reduce wear costs.
The parallelism of the drill bit center axis and the drill handle end surface is adjusted, the dimensional accuracy of the processed parts is improved, and the wear replacement cost of the adjustment seat is reduced.
Smart Images
Figure CN223129424U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of drill shanks for Swiss-type lathes, and more specifically to an adjustable eccentric drill shank for Swiss-type lathes. Background Art
[0002] Swiss-type CNC lathes, also known as Swiss-type CNC lathes, are precision machining equipment that can complete composite machining such as turning, milling, drilling, boring, tapping, and engraving at the same time. They are mainly used for batch processing of precision hardware and special-shaped non-standard shaft parts.
[0003] It should be noted that, in the existing Swiss-type lathe equipment, when the clamping part on the back-axis tool holder is eccentric due to wear or improper assembly, the drill shank will also be eccentric when installed on the clamping part. Since the central axis of the drill bit on the drill shank cannot be adjusted, the dimensional accuracy of the workpiece is low. In addition, since the parallelism between the end face of the drill shank with the drill bit clamped and the end face of the back-axis tool holder cannot be adjusted, when the flatness of the back-axis tool holder is not good, the dimensional accuracy of the workpiece will also be reduced.
[0004] Therefore, there is a demand for providing an adjustable eccentric drill shank for a Swiss-type lathe with an adjustable drill center axis and adjustable parallelism of the drill shank end face. Utility Model Content
[0005] The main purpose of the present application is to provide an adjustable eccentric drill shank for a Swiss machine, which is installed on the Swiss machine, wherein the adjustable eccentric drill shank for a Swiss machine comprises a clamping seat, an adjusting seat and a drill bit mounting assembly, the clamping seat comprises a clamping portion and an adjusting portion, the adjusting portion has a receiving hole, the side wall of the adjusting portion has four first threaded holes arranged in an annular shape, the first threaded hole is connected to the receiving hole, the end surface of the adjusting portion away from the clamping portion has four second threaded holes arranged in an annular shape, the adjusting seat comprises a screwing portion, a disk body portion and an extending portion, the two ends of the disk body portion are divided into The drill bit mounting assembly is installed on the screwing part, and the parallelism of the center axis and the end face of the adjusting seat can be adjusted by setting the first threaded hole, the second threaded hole, the third threaded hole and the fourth threaded hole on the adjusting seat. Compared with the prior art, the drill bit mounting assembly has the advantages of adjustable center axis of the drill bit and adjustable end face parallelism of the drill shank.
[0006] Another object of the present application is to provide an adjustable eccentric drill shank for a Swiss machine, wherein the adjustable eccentric drill shank for a Swiss machine also includes a wear-resistant sleeve, which is arranged on the extension part and connected to the extension part. By providing the wear-resistant sleeve, the replacement cost of the adjustment seat extension part after wear is reduced.
[0007] In order to achieve at least one of the above invention purposes, the present application provides an adjustable eccentric drill shank for a Swiss machine, which is installed on a Swiss machine, wherein the adjustable eccentric drill shank for a Swiss machine comprises:
[0008] A clamping seat, the clamping seat comprising a clamping portion and an adjusting portion, the adjusting portion having a receiving hole, a side wall of the adjusting portion having four first threaded holes arranged in an annular manner, the first threaded hole being connected to the receiving hole, and an end surface of the adjusting portion facing away from the clamping portion having four second threaded holes arranged in an annular manner; and
[0009] an adjustment seat, the adjustment seat comprising a screwing portion, a disc portion and an insertion portion, the two ends of the disc portion are respectively connected to the screwing portion and the insertion portion, the insertion portion is inserted into the accommodating hole, the disc portion has four third threaded holes and four fourth threaded holes, one fourth threaded hole is provided between two adjacent third threaded holes, and the second threaded holes correspond to the third threaded holes one by one; and
[0010] A drill bit mounting assembly is mounted on the screwing portion.
[0011] In one or more embodiments of the present application, the drill bit mounting assembly includes a cover cap and a spring clip, the screwing portion has a first conical hole and a threaded portion, the spring clip has a plurality of clip petals arranged in a ring shape, each of the two ends of the clip petals has a conical surface portion, the cover cap has a fifth threaded hole and a second conical hole, the two conical surface portions are respectively fitted with the first conical hole and the second conical hole, and the fifth threaded hole is threadedly connected to the threaded portion.
[0012] In one or more embodiments of the present application, the adjustable eccentric drill shank for a central machining center further includes a wear-resistant sleeve, and the wear-resistant sleeve is sleeved on the insertion portion and connected to the insertion portion.
[0013] In one or more embodiments of the present application, the cap, the spring clip, the adjustment seat and the clamping seat all have a through hole.
[0014] In one or more embodiments of the present application, the clamping portion has a cut surface.
[0015] In one or more embodiments of the present application, cross-sections of both ends of the cap are respectively circular and regular hexagonal, and the end of the cap with the regular hexagonal cross-section is close to the adjustment seat.
[0016] In one or more embodiments of the present application, an end of the third threaded hole away from the second threaded hole has a hole expansion portion.
[0017] In the embodiments of the present application, the adjustable eccentric drill bit shank for a sliding headstock lathe includes a clamping seat, an adjusting seat, and a drill bit mounting assembly. The clamping seat includes a clamping portion and an adjusting portion. The adjusting portion has a receiving hole, and the side wall of the adjusting portion has four first threaded holes arranged in a ring. The first threaded holes communicate with the receiving hole. The end face of the adjusting portion facing away from the clamping portion has four second threaded holes arranged in a ring. The adjusting seat includes a screwing portion, a disk portion, and an extending portion. The two ends of the disk portion are respectively connected to the screwing portion and the extending portion. The extending portion extends into the receiving hole. The disk portion has four third threaded holes and four fourth threaded holes. There is a fourth threaded hole between two adjacent third threaded holes. The second threaded holes and the third threaded holes correspond to each other one by one. The drill bit mounting assembly is mounted on the screwing portion. By providing the first threaded holes, second threaded holes, third threaded holes, and fourth threaded holes on the adjusting seat, the adjustability of the central axis and the parallelism of the end face of the adjusting seat can be realized. Compared with the prior art, it has the advantages that the central axis of the drill bit is adjustable and the parallelism of the end face of the drill bit shank is adjustable. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] These and / or other aspects and advantages of the present application will become clearer and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, where:
[0019] Figure 1 FIG. shows a cross-sectional view of an adjustable eccentric drill bit shank for a sliding headstock lathe according to the present utility model;
[0020] Figure 2 FIG. shows a schematic structural view of an adjustable eccentric drill bit shank for a sliding headstock lathe;
[0021] Figure 3 FIG. shows a schematic structural view of the clamping seat;
[0022] Figure 4 FIG. shows a schematic structural view of the collet. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The terms and words used in the following description and claims are not limited to the literal meanings, but are used by the inventors only to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of the various embodiments of the present application is provided only for the purpose of illustration and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.
[0024] It can be understood that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" cannot be understood as a limitation on the number.
[0025] Although ordinal numbers such as "first", "second", etc. will be used to describe various components, those components are not limited herein. The term is only used to distinguish one component from another. For example, the first component can be referred to as the second component, and similarly, the second component can also be referred to as the first component, without departing from the teachings of the utility model concept. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.
[0026] The terms used herein are for the purpose of describing various embodiments only and are not intended to be limiting. As used herein, the singular forms are also intended to include the plural forms unless the context clearly indicates otherwise. Additionally, it will be understood that the terms "comprises" and / or "has" when used in this specification specify the presence of the stated features, numbers, steps, operations, components, elements, or combinations thereof, without precluding the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.
[0027] Schematic adjustable eccentric drill shank for a gang-type automatic lathe
[0028] Reference Figures 1 to 4 , an adjustable eccentric drill shank for a gang-type automatic lathe according to a preferred embodiment of the present utility model, is installed on the gang-type automatic lathe and includes a clamping seat 10, an adjusting seat 20, and a drill bit mounting assembly 30.
[0029] Specifically, as Figure 1 and Figure 2 shown, the clamping seat 10 includes a clamping portion 101 and an adjusting portion 102. The clamping portion 101 extends into the back spindle tool post mounting hole of the gang-type automatic lathe. The adjusting portion 102 has a receiving hole 1021. The adjusting seat 20 includes a screwing portion 201, a disc portion 202, and an extending portion 203. The two ends of the disc portion 202 are respectively connected to the screwing portion 201 and the extending portion 203. The extending portion 203 extends into the receiving hole 1021. The drill bit mounting assembly 30 is mounted on the screwing portion 201.
[0030] It should be noted that the radial dimension of the extending portion 203 is smaller than the aperture of the receiving hole 1021. The maximum radial dimension of the adjusting portion 102 is larger than the maximum radial dimension of the clamping portion 101. And the adjusting portion 102 is integrally in the shape of a circular disc, the clamping portion 101 is integrally in the shape of a circular shaft, and the thickness of the adjusting portion 102 is smaller than the length of the clamping portion 101.
[0031] In addition, as Figure 1 and Figure 2As shown, the side wall of the adjusting portion 102 has four first threaded holes 1022 arranged in a ring shape, and the first threaded holes 1022 extend from the side wall of the adjusting portion 102 toward the central axis direction of the clamping seat 10 until the first threaded holes 1022 are connected to the accommodating hole 1021 .
[0032] It should be noted that a bolt is threadedly connected in each of the first threaded holes 1022. By providing the first threaded holes 1022, when the insertion portion 203 is inserted into the receiving hole 1021, the bolt is screwed into the receiving hole 1021 by a predetermined distance and abuts against the insertion portion 203. Since the angle between two adjacent first threaded holes 1022 is 90°, the four bolts screwed into the first threaded holes 1022 are presented in two groups arranged oppositely. By adjusting the length of the corresponding group of two bolts inserted into the receiving hole 1021, the central axis of the adjustment seat 20 can be adjusted. Since the drill bit mounting assembly 30 is fixedly mounted on the adjustment seat 20, the advantage of the adjustable central axis of the drill bit mounting assembly 30 is achieved.
[0033] In addition, if Figure 3 As shown, the end surface of the adjusting portion 102 away from the clamping portion 101 has four second threaded holes 1023 arranged in a ring shape, and the second threaded holes 1023 are located outside the accommodating hole 1021, as shown in 1 and Figure 2 As shown, the disk body 202 has four third threaded holes 2021 and four fourth threaded holes 2022 , one fourth threaded hole 2022 is provided between two adjacent third threaded holes 2021 , and the second threaded holes 1023 correspond to the third threaded holes 2021 one by one.
[0034] It should be noted that each of the third threaded holes 2021 and each of the fourth threaded holes 2022 is threadedly connected with a bolt, and the bolt in the third threaded hole 2021 extends into the corresponding second threaded hole 1023 by a predetermined distance to achieve the connection between the adjusting part 102 and the disk body 202, and the bolt at the fourth threaded hole 2022 passes through the fourth threaded hole 2022 and abuts against the end face of the adjusting part 102.
[0035] It should be noted that when the parallelism between the end face of the disk body portion 202 and the end face of the back spindle tool rest exceeds the specified dimension, the bolts in the two third threaded holes 2021 on the corresponding side can be loosened, and the bolt nuts in the third threaded holes 2021 are spaced a predetermined distance from the disk body portion 202. Subsequently, the bolts in the fourth threaded holes 2022 on the same side are further tightened and abutted against the end face of the adjusting portion 102, then the disk body portion 202 on this side is deflected a predetermined angle in the direction away from the adjusting portion 102, thereby realizing the adjustment of the parallelism of the end face of the disk body portion 202. Obviously, compared with the prior art, the embodiment of the present application has the advantage that the parallelism of the drill shank end face is adjustable.
[0036] Further, to achieve the installation of the drill bit, as Figure 1 shown, the drill bit mounting assembly 30 includes a cap 301 and a collet 302. The screwing portion 201 has a first tapered hole 2011 and a threaded portion 2012. The first tapered hole 2011 is located at the center of the screwing portion 201, and the threaded portion 2012 is located on the outer wall of the end of the screwing portion 201. As Figure 4 shown, the collet 302 has a plurality of clamping petals 3021 arranged in a ring. Both ends of each clamping petal 3021 have a tapered surface portion 3022. The cap 301 has a fifth threaded hole 3011 and a second tapered hole 3012. The two tapered surface portions 3022 are respectively in contact with the first tapered hole 2011 and the second tapered hole 3012. The fifth threaded hole 3011 is threadedly connected to the threaded portion 2012.
[0037] In addition, as Figure 1 and Figure 4 shown, the cap 301, the collet 302, the adjusting seat 20, and the clamping seat 10 all have a through hole 3023.
[0038] It should be noted that the clamping petals 3021 have a certain elasticity and can move towards or away from the central axis of the collet 302. When installing the drill bit, one end of the drill bit is passed through the through holes 3023 on the cap 301 and the collet 302. By tightening the cap 301, the cap 301 moves towards the disk body portion 202. Then, the second tapered hole 3012 exerts a horizontal and vertical force on the tapered surface portion 3022 at one end of the clamping petal 3021. At the same time, the first tapered hole 2011 exerts a horizontal and vertical force on the tapered surface portion 3022 at the other end of the clamping petal 3021. Then each clamping petal 3021 moves towards the central axis of the collet 302 under the action of force and clamps the drill bit, realizing the installation of the drill bit.
[0039] Furthermore, since the surface of the extending portion 203 may be worn and pitted after being pressed against the bolts for many times, in order to reduce the replacement cost, Figure 1 As shown, the adjustable eccentric drill shank for a central machining center further includes a wear-resistant sleeve 40, which is sleeved on the insertion portion 203 and connected to the insertion portion 203, and the connection method is preferably a threaded connection. The wear-resistant sleeve 40 also has the through hole 3023.
[0040] Furthermore, in order to prevent the clamping portion 101 from rotating when it is assembled in the back shaft tool holder mounting hole, as Figure 2 As shown, the clamping portion 101 has a cut surface 1011 .
[0041] Further, in order to facilitate manual and wrench screwing of the cap 301, as Figure 2 As shown, the cross-sections of the two ends of the cap 301 are respectively circular and regular hexagonal, and the end of the cap 301 with the regular hexagonal cross-section is close to the adjustment seat 20 .
[0042] Furthermore, in order to conveniently hide the bolt cap portion of the bolt in the third threaded hole 2021, as Figure 2 As shown, one end of the third threaded hole 2021 away from the second threaded hole 1023 has an expanded hole portion 2023 , and the bolt cap portion of the bolt in the third threaded hole 2021 is placed in the expanded hole portion 2023 .
[0043] In summary, the adjustable eccentric drill shank for a Swiss machine based on the embodiment of the present application is explained, which provides the adjustable eccentric drill shank for a Swiss machine with advantages such as adjustable center axis of the drill bit and adjustable parallelism of the end face of the drill shank.
[0044] It is worth mentioning that in the embodiment of the present application, the adjustable eccentric drill shank for the Swiss-type machine tool has a simple structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the adjustable eccentric drill shank for the Swiss-type machine tool provided by the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further conducive to product promotion and use.
[0045] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.
Claims
1. An adjustable eccentric drill shank for a sliding headstock lathe, which is installed on the sliding headstock lathe, and is characterized in that: The adjustable eccentric drill shank for the Swiss-type lathe comprises A clamping seat, the clamping seat comprising a clamping portion and an adjusting portion, the adjusting portion having a receiving hole, a side wall of the adjusting portion having four first threaded holes arranged in an annular manner, the first threaded hole being connected to the receiving hole, and an end surface of the adjusting portion facing away from the clamping portion having four second threaded holes arranged in an annular manner; and an adjustment seat, the adjustment seat comprising a screwing portion, a disc portion and an insertion portion, the two ends of the disc portion are respectively connected to the screwing portion and the insertion portion, the insertion portion is inserted into the accommodating hole, the disc portion has four third threaded holes and four fourth threaded holes, one fourth threaded hole is provided between two adjacent third threaded holes, and the second threaded holes correspond to the third threaded holes one by one; and A drill bit mounting assembly is mounted on the screwing portion.
2. The adjustable eccentric drill shank for a sliding headstock lathe according to claim 1, characterized in that: The drill bit mounting assembly includes a cover cap and a spring clip, the screwing portion has a first conical hole and a threaded portion, the spring clip has a plurality of clip petals arranged in a ring shape, each of the two ends of the clip petals has a conical surface portion, the cover cap has a fifth threaded hole and a second conical hole, the two conical surface portions are respectively fitted with the first conical hole and the second conical hole, and the fifth threaded hole is threadedly connected to the threaded portion.
3. The adjustable eccentric drill shank for a sliding headstock lathe according to claim 2, characterized in that: The adjustable eccentric drill shank for a central lathe further comprises a wear-resistant sleeve, which is sleeved on the insertion portion and connected to the insertion portion.
4. The adjustable eccentric drill shank for a sliding headstock lathe according to claim 3, characterized in that: The cover cap, the spring clip, the adjustment seat and the clamping seat all have a through hole.
5. The adjustable eccentric drill shank for a sliding headstock lathe according to any one of claims 2-4, characterized in that: The clamping portion has a cut surface.
6. The adjustable eccentric drill shank for a sliding headstock lathe according to claim 5, wherein: The cross sections of the two ends of the cap are respectively circular and regular hexagonal, and the end of the cap with the regular hexagonal cross section is close to the adjustment seat.
7. The adjustable eccentric drill shank for a sliding headstock lathe according to claim 6, characterized in that: An end of the third threaded hole away from the second threaded hole has a hole expansion portion.