CN210755687U - Pull rod supporting device of horizontal type electrolytic machining tool - Google Patents
Pull rod supporting device of horizontal type electrolytic machining tool Download PDFInfo
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- CN210755687U CN210755687U CN201921196826.4U CN201921196826U CN210755687U CN 210755687 U CN210755687 U CN 210755687U CN 201921196826 U CN201921196826 U CN 201921196826U CN 210755687 U CN210755687 U CN 210755687U
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- steel ball
- pull rod
- supporting seat
- cylindrical section
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Abstract
The utility model relates to a pull rod supporting device of a horizontal type electrolytic machining tool, which comprises a base (1), a supporting seat (2) and a steel ball (3); one surface of the base (1) is provided with a plurality of threaded holes, and the axes of the threaded holes are parallel to each other; the other side is provided with a tooth-shaped groove which is meshed with a rack of the machine tool body; one end of the supporting seat (2) is fixedly connected with one surface of the base (1) provided with a plurality of threaded holes, the other end of the supporting seat is provided with a groove along the axis, a steel ball (3) is placed in the groove, and the steel ball (3) is not contacted with the bottom of the groove; the pull rod to be processed is arranged on the steel ball (3), and the pull rod to be processed and the steel ball are in mutual rolling friction during processing. The steel balls are purchased outside the steel ball production line, and can be replaced at any time when the steel balls are worn or damaged, the replacement operation only needs 5 minutes, the labor intensity is low, and the economical efficiency is good.
Description
Technical Field
The utility model relates to a supporting device, in particular to a pull rod supporting device of a horizontal type electrolytic machining tool
Background
The electrochemical machining adopts the principle of electrochemical dissolution to machine parts, has the advantages of no cathode loss, no stress in machining, good surface roughness and the like, and has remarkable advantages in machining of materials which are difficult to machine and parts with complex shapes or thin walls. At present, the electrolytic machining is widely applied, such as the machining of rifling of a gun barrel, an internal spline, a metal stator of an internal spiral screw, a special-shaped hole, a special-shaped part and the like. Since the parts such as the rifling of the gun barrel, the internal spline, the metal stator of the internal helical screw, the special-shaped hole and the like are generally long, the electrolytic machining of the parts can be carried out only on a horizontal electrolytic machining machine.
When the horizontal type electrolytic machining machine tool is used for machining inner cavity characteristics such as a gun barrel rifling, an internal spline, an internal spiral screw metal stator and the like, a machine tool main shaft drives a pull rod to move in Z, C two directions, wherein according to the standard of a Cartesian coordinate system, the axial direction of the pull rod is a Z axis, the rotating motion around the axis of the pull rod is defined as a C axis, the Z axis of the pull rod moves axially, and the C axis moves rotationally, namely Z, C axes are linked. In order to ensure the running stability of the cathode, the accuracy of the processing quality of parts and the protection of a main shaft of a machine tool, a supporting device is required for the long pull rod, so that the deformation and the bending of the pull rod in the motion process are ensured to be as small as possible.
According to the pull rod supporting structure disclosed in the patent with the patent number ZL201120151106.3 and the name of horizontal type electrolytic machining machine tool, a hole-shaft matched support is arranged between the pull rod and the supporting seat; during processing, the supporting seat does not move, the pull rod does rotation-axial two-way movement, sliding movement is carried out between the pull rod and the support, and the friction coefficient is about 0.15; when the diameter of the pull rod is increased and the dead weight of the pull rod is increased, the situation is particularly prominent, and the following three defects exist:
① when the dead weight of the pull rod is large, the friction force is large because of the sliding motion between the pull rod and the support, which may cause the support to deform or even overturn, and the support structure is worn greatly during long-term operation;
②, because of the large friction force between the pull rod and the support, the cathode may creep during the processing movement, even the machine tool straight line and the rotating motor are overloaded, and the processing cannot be continued;
③ when the pull rod of different types and sizes needs to be replaced, the device also needs to be replaced correspondingly, the labor intensity of installation is high, the purchase cost of the tool is high, and the economical efficiency is poor.
Disclosure of Invention
The utility model provides a technical problem be: in order to solve the problems of overlarge friction force, low device universality and poor economical efficiency of the pull rod in the operation process of the horizontal type electrolytic machining tool in the prior art, the utility model provides a pull rod supporting device of the horizontal type electrolytic machining tool.
The technical scheme of the utility model is that: a pull rod supporting device of a horizontal type electrolytic machining machine tool is characterized by comprising a base, a supporting seat and a steel ball; one surface of the base is provided with a plurality of threaded holes, and the axes of the threaded holes are parallel to each other; the other side is provided with a tooth-shaped groove which is meshed with a rack of the machine tool body; one end of the supporting seat is fixedly connected with one surface of the base, which is provided with a plurality of threaded holes, and the other end of the supporting seat is provided with a groove along the axis, a steel ball is placed in the groove and is not contacted with the bottom of the groove; the pull rod to be processed is arranged on the steel ball, and when the pull rod to be processed and the steel ball are processed, the pull rod to be processed and the steel ball are in mutual rolling friction.
The utility model discloses a further technical scheme is: the supporting seat is a T-shaped body, and a plurality of strip-shaped holes are symmetrically formed in two ends of the straight end along the axis and used for adjusting the distance between the supporting seat and the pull rod to be processed; one end of the 1-shaped end is coaxially provided with a special-shaped cavity groove.
The utility model discloses a further technical scheme is: the special-shaped cavity groove comprises a first cylindrical section, a second conical section and a third cylindrical section, and the diameter of the first cylindrical section is phi 91mm, so that the special-shaped cavity groove plays a limiting role; the sizes of the two ends of the second conical section are phi 91mm and phi 90mm respectively, so that the steel ball is supported, and the tangent point of the steel ball and the conical section of the support seat is positioned below the center of the steel ball; the diameter of the third cylindrical section is phi 60mm, and the third cylindrical section plays a role in storing lubricating oil.
The utility model discloses a further technical scheme is: the steel ball is positioned in the first cylindrical section and the second conical section and is in contact with lubricating oil in the third cylindrical section, so that the steel ball is lubricated.
The utility model discloses a further technical scheme is: the inner surface of the special-shaped cavity groove is plated with chrome, the thickness of the chrome layer is 0.03-0.05 mm, and the surface roughness is Ra0.8.
Effects of the invention
The technical effects of the utility model reside in that: compared with the prior art, the utility model has the advantages as follows:
① sliding friction is changed into rolling friction between the pull rod and the support, the steel ball can move along with the movement of the pull rod, the steel ball can freely rotate in a space range of 360 degrees, meanwhile, lubricating oil is stored in the support seat, the friction coefficient can be reduced to 0.01, and the reduction is 14 times;
② the supporting seat is integrally quenched, and the inner cavity is plated with chrome, so that the wear resistance and corrosion resistance of the device are enhanced;
③ the base is provided with screw holes at different positions 16, which can be adapted to pull rods of different types and sizes, and further extends the application range of the device;
④ the steel ball is purchased outside, and can be replaced at any time when worn or damaged, and the replacement only needs 5 minutes, the labor intensity is low, and the economical efficiency is good.
Drawings
FIG. 1 is a structural and assembly view of a pull rod supporting device of a horizontal type electrolytic machining tool of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a cross-sectional view A-A of FIG. 2;
FIG. 5 is a front elevational view of the base of FIG. 1;
FIG. 6 is a cross-sectional view of FIG. 5;
FIG. 7 is a front elevational view of the support base of FIG. 1;
FIG. 8 is a sectional view taken along line A-A of FIG. 7
FIG. 9 is a detail view of the pull rod of FIG. 1;
in the figure, 1-base, 2-supporting seat, 3-steel ball, 4-fastening screw, 5-pull rod, 6-first cylindrical section, 7-second conical section and 8-third cylindrical section
Detailed Description
Referring to fig. 1 to 9, in order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides a supporting device for a pull rod of a horizontal type electrolytic machining machine tool, which comprises two groups of devices with the same structure. Each set of device comprises a base 1, a supporting seat 2, a steel ball 3 and a fastening screw 4; the bottom surface of the base 1 is provided with a toothed groove which is meshed with a rack of a machine tool body and can perform axial linear motion along the machine tool body, the upper surface of the base 1 determines the position of the supporting seat 2 according to the diameter of a steel ball and the tangent point position of the pull rod, and M12 threaded holes are formed in different positions at 16 positions along two sides of the axis according to the installation position of the supporting seat 2; 2 fixed supporting seats 2 are fixedly connected to the base 1 through 8 fastening screws 4 and can adapt to pull rods with different types and diameters; the supporting seat 2 is of an inverted T shape, 4 long holes are formed in a base of the supporting seat, the distance between the supporting seat 2 and the pull rod can be conveniently adjusted, a special-shaped cavity is formed in the upper portion of the supporting seat, and the special-shaped cavity consists of a cylindrical section, a conical section and a cylindrical section and plays roles in limiting, supporting a steel ball and storing oil; the steel ball 3 is a phi 90 solid steel ball and is placed in the inner cavity of the supporting seat 2 in a free state;
the whole base 1 is a cuboid and is made of stainless steel materials; the bottom surface of the screw is provided with a tooth-shaped groove, and the other surface corresponding to the bottom surface is symmetrically provided with 16M 12 threaded holes along the axis.
The supporting seat 2 is of a T-shaped structure, 40Cr is adopted, 4 strip holes are symmetrically formed in a base, a special-shaped cavity is formed in the top end of the supporting seat, the special-shaped cavity consists of a cylindrical section, a conical section and a cylindrical section, the diameter of the upper cylindrical section is phi 91mm, and a limiting effect is achieved; the sizes of the two ends of the conical section are phi 91mm and phi 90mm respectively, so that the conical section plays a role in supporting the steel ball on one hand, and the tangent point of the steel ball 3 and the conical section of the supporting seat 2 is ensured to be positioned below the center of the steel ball 3 on the other hand; the diameter of the lower cylindrical section is phi 60mm, and the oil storage function is realized; the whole supporting seat 2 is quenched to 37-42 HRC through heat treatment, and meanwhile the inner surface of the special-shaped cavity at the top end of the supporting seat is plated with chromium, the thickness of the chromium layer is 0.03-0.05 mm, and the surface roughness is Ra0.8.
The steel ball 3 is a solid nonmagnetic stainless steel ball with surface roughness Ra0.8 and roundness within 0.01.
The fastening screw 4 is a stainless steel standard screw, and the specification of the fastening screw is M12 multiplied by 45.
The installation and the working process are as follows:
the two supporting seats 2 are symmetrically and fixedly connected to the base 1 through fastening screws 4, and the two steel balls 3 are respectively arranged in the special-shaped cavities at the top ends of the supporting seats 2; the assembly of the pull rod supporting device of the utility model is completed;
two groups of the pull rod supporting devices of the utility model are used in the work; the distance between each group of two supporting seats 2 is adjusted to ensure that the steel balls 3 at the two sides are tangent to the pull rod, so that the supporting effect is achieved, and the deformation and the bending of the pull rod are prevented; 8 fastening screws 4 respectively penetrate through a U-shaped groove in the fixed supporting seat 2 and a threaded hole in the base 1, and the base 1 is fixedly connected with the supporting seat 2;
when in processing, the left end of the pull rod 5 is connected with the main shaft of the machine tool through a 7:24 cone, the right end of the pull rod 5 is connected with a cathode through threads, and the pull rod 5 is driven by the main shaft of the machine tool to do two-way motion in the rotating-axial direction; according to the standard of a Cartesian coordinate system, the axis direction of the pull rod is defined as a Z axis, and the rotation motion around the axis of the pull rod is defined as a C axis, namely the pull rod is linked with the Z axis and the C axis; the steel ball 3 is pressed, under the action of tangential force, the steel ball rolls for 360 degrees, and the friction between the steel ball and the supporting structure is rolling friction; lubricating oil is stored in the special-shaped cavity at the top end of the supporting seat 2, so that the friction coefficient between the pull rod and the support is reduced by about 0.01, the friction force between the pull rod and the support is further reduced, the creeping phenomenon possibly occurring due to the overlarge friction force of the cathode is prevented, and meanwhile, the linear and rotary motion electrodes can be effectively protected.
When the pull rod of different models, size need be changed, because there is prefabricated screw hole on the base 1, only need unscrew fastening screw 4, adjust the double-phase interval of relative supporting seat 2 on base 1, reuse fastening screw 4 fastening supporting seat 2 and base 1 can realize that steel ball 3 is tangent with pull rod 5, plays the effect of support.
Claims (5)
1. A pull rod supporting device of a horizontal type electrolytic machining tool is characterized by comprising a base (1), a supporting seat (2) and a steel ball (3); one surface of the base (1) is provided with a plurality of threaded holes, and the axes of the threaded holes are parallel to each other; the other side is provided with a tooth-shaped groove which is meshed with a rack of the machine tool body; one end of the supporting seat (2) is fixedly connected with one surface of the base (1) provided with a plurality of threaded holes, the other end of the supporting seat is provided with a groove along the axis, a steel ball (3) is placed in the groove, and the steel ball (3) is not contacted with the bottom of the groove; the pull rod to be processed is arranged on the steel ball (3), and the pull rod to be processed and the steel ball are in mutual rolling friction during processing.
2. The supporting device for the pull rod of the horizontal type electrolytic machining tool as claimed in claim 1, characterized in that the supporting seat (2) is a T-shaped body, and a plurality of elongated holes are symmetrically formed at two ends of the straight end along the axis for adjusting the distance between the supporting seat (2) and the pull rod to be machined; one end of the 1-shaped end is coaxially provided with a special-shaped cavity groove.
3. The pull rod supporting device of the horizontal type electrolytic machining tool as claimed in claim 2, wherein the special-shaped cavity groove comprises a first cylindrical section (6), a second conical section (7) and a third cylindrical section (8), the diameter of the first cylindrical section (6) is phi 91mm, and the first cylindrical section has a limiting effect; the sizes of the two ends of the second conical section (7) are phi 91mm and phi 90mm respectively, so that the steel ball is supported, and the tangent point of the conical section of the steel ball (3) and the supporting seat (2) is positioned below the center of the steel ball (3); the diameter of the third cylindrical section (8) is phi 60mm, and the third cylindrical section plays a role in storing lubricating oil.
4. A tie rod supporting device for a horizontal electrolytic machine tool according to claim 2, characterized in that the steel ball (3) is located in the first cylindrical section (6) and the second conical section (7) and is in contact with the lubricating oil in the third cylindrical section (8) for lubricating the steel ball (3).
5. The tie bar supporting device of a horizontal type electrolytic processing machine tool according to claim 2, wherein the inner surface of the special-shaped cavity groove is chrome-plated, the thickness of the chrome layer is 0.03-0.05 mm, and the surface roughness is Ra0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921196826.4U CN210755687U (en) | 2019-07-29 | 2019-07-29 | Pull rod supporting device of horizontal type electrolytic machining tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921196826.4U CN210755687U (en) | 2019-07-29 | 2019-07-29 | Pull rod supporting device of horizontal type electrolytic machining tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210755687U true CN210755687U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921196826.4U Active CN210755687U (en) | 2019-07-29 | 2019-07-29 | Pull rod supporting device of horizontal type electrolytic machining tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210755687U (en) |
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- 2019-07-29 CN CN201921196826.4U patent/CN210755687U/en active Active
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