CN209887572U - Hand-held type hollow annular part inner and outer circle benchmark marking tool - Google Patents
Hand-held type hollow annular part inner and outer circle benchmark marking tool Download PDFInfo
- Publication number
- CN209887572U CN209887572U CN201920643109.5U CN201920643109U CN209887572U CN 209887572 U CN209887572 U CN 209887572U CN 201920643109 U CN201920643109 U CN 201920643109U CN 209887572 U CN209887572 U CN 209887572U
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- cross beam
- hollow annular
- marking
- scriber
- marking tool
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Abstract
The utility model relates to a hand-held hollow annular part inner and outer circle reference marking tool, which comprises a cross beam and a marking needle, wherein the marking needle is fixed at one end of the cross beam; the support body is also fixedly provided with at least two bearing supporting shafts perpendicular to the support body, and one ends of the bearing supporting shafts, which are close to the scriber, are matched with the fixed end face rolling bearings; the bracket is also provided with at least two matching holes for installing the rolling bearings with the circumferential surfaces; the scriber is arranged above the cross beam, a spring is sleeved on the scriber, a cylindrical spring adjusting screw rod is fixedly connected to the cross beam, and the spring adjusting screw rod is in threaded connection with a spring adjusting nut. The method is used for solving the problem of rapid and accurate positioning of the center distance of the holes of the large hollow annular part, improving the efficiency and accuracy of rapid marking of the inner and outer circles of the hollow annular part, and reducing the labor intensity.
Description
Technical Field
The utility model belongs to the technical field of machining, concretely relates to hand-held type hollow annular part inside and outside circle benchmark marking tool.
Background
Currently, most of machining plants in some enterprises are common machine tools, such as common lathes, radial drilling machines, common horizontal milling machines and common vertical milling machines. Most of these machines are based on mechanical feed and manual positioning, such as lathe four-jaw alignment, milling machine scriber alignment, etc. However, when the outer ring hole of the annular component is machined on a rocker arm drilling machine, the hole must be manually marked, positioned, punched and drilled. For example, a pressure testing ring is required for pressure testing of a large heat exchanger shell side. Due to different pressure grades of the heat exchanger, the number of the fastening bolts is correspondingly different. Generally, a pressure test ring of certain specifications processed in advance needs to be processed again with bolt holes for the original large pressure test ring due to different bolt hole numbers under the condition that the diameter of the pressure test ring is the same as that of a heat exchanger shell-side flange needing pressure test. There are problems in that: the original bolt hole of pressure testing ring is not matched with the center distance of the hole of the existing heat exchanger shell flange, and the center distance of the bolt hole of the pressure testing ring needs to be confirmed again according to the bolt hole of the heat exchanger shell flange and the pressure testing ring is machined again. In the past, the center distance of the pressure testing ring bolt hole is marked by a center compensation method and a special fixed ground gauge alignment method of a radial drilling machine.
The heart tonifying method comprises the following specific steps: a cross support is added in the middle of the original pressure test ring by a batten or channel steel and is fixed on the inner circular surface of the circular ring, and a long ruler is used for marking two crossed straight lines by using original symmetrical bolt holesThe radial line and the intersection point are positioned on the middle point of the cross support, and the center of the pressure test ring is determined. The center of the cross support is used as a round point by a ground gauge, and the radius is 600mmAn eye-heart distance of 1200. And finding out the position of the modified bolt hole by using a chord length method. And finally, sampling and punching the hole. The advantage of the method of the center distance of the eye is simple operation, the disadvantage is that each pair of hollow ring with one specification is marked, a pair of cross frames is specially manufactured, and a large amount of materials are wasted. And moreover, riveting and welding procedures are required to be matched in manufacturing and installation, so that manufacturing procedures are increased, and labor and time are increased. The coring scoring is not applicable in the modification of the single-piece hollow annular part which is urgently needed.
The specific method for fixing the special ground standard alignment method of the radial drilling machine comprises the following steps: still take the transformation of pressure testing ring as an example, make a special ground gage, the centre of a circle connecting piece of the ground gage is transformed into and can be fixed on the main shaft of the drilling machine or the upper part of the drill chuck, the other end marking gage is invariable. When the line is marked, the circle center of the ground gauge is fixed on the main shaft of the drilling machine, and the rocker arm of the drilling machine is locked. And the scribing end extends to the inner diameter or the outer diameter of the test pressing ring, the scribing gauge is rotated, the test pressing ring is knocked and moved, and the rotary track of the scribing gauge is concentric with the inner diameter or the outer diameter of the test pressing ring. Fixing the test pressure ring, adjusting the radius of the marking gauge to 600mm, and drawingAn eye-heart distance of 1200. And finding out the position of the modified bolt hole by using a chord length method. And finally, sampling and punching the hole.
The fixed special ground gage alignment method of the radial drilling machine has the following defects: during scribing, the main shaft is rotated while the pressure testing ring is knocked, and whether the scribing track is concentric with the pressure testing ring is determined visually; the scribing precision is low and is influenced by the precision of the drilling machine; the marking-out must be operated on a rocker drill machine, which adds 2 times of hoisting operation. The alignment method for marking lines fixed and specially used by the radial drilling machine has the advantages of marking lines on small hollow ring parts, but is not suitable for marking large workpieces or more precise parts.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a hand-held type hollow annular part inner and outer circle benchmark marking tool for solve large-scale hollow annular part punchhole heart apart from quick accurate positioning problem, improve the quick marking efficiency of hollow annular part inner and outer circle benchmark and precision, reduce intensity of labour.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a handheld marking tool for reference of inner and outer circles of a hollow annular component comprises a cross beam and a marking awl, wherein the marking awl is fixed at one end of the cross beam, the handheld marking tool further comprises a support body, the support body is provided with a matching through hole for movably mounting the cross beam, and the top end of the support body is further provided with a threaded hole matching bolt for fixing the cross beam; the support body is also fixedly provided with at least two bearing supporting shafts perpendicular to the support body, and one ends of the bearing supporting shafts, which are close to the scriber, are matched with the fixed end face rolling bearings; the bracket is also provided with at least two matching holes for installing the rolling bearings with the circumferential surfaces, and the bottom end of the bracket body is also provided with a pin matching hole for fixing the rolling bearings with the circumferential surfaces; the cross beam is provided with a through hole matched with the scriber to move up and down, the scriber above the cross beam is sleeved with a spring, the cross beam is fixedly connected with a cylindrical spring adjusting screw rod, and the spring adjusting screw rod is in threaded connection with a spring adjusting nut.
Furthermore, the bearing supporting shaft is sleeved with a spacer ring between the support body and the end face rolling bearing, and the spacer ring is used for limiting the end face rolling bearing. The end face rolling bearing is prevented from being shaken.
Furthermore, the top end of the scriber is fixedly connected with a spring seat. The bottom end of the spring can also be provided with a spring seat, and the spring is clamped between the cross beam and the spring seat at the top end of the scriber.
Furthermore, two groups of end face rolling bearings and two groups of circumferential face rolling bearings are arranged.
Furthermore, the end part of the pin for fixing the rolling bearing with the circumferential surface is provided with threads, and the matching hole of the pin is in threaded connection with the pin.
Further, the crossbeam is square pole, crossbeam and support body cooperation through-hole are square cooperation. Therefore, the scribing needle is prevented from rotating, and the scribing precision is improved.
Furthermore, the matching of the scriber and the cross beam adopts square matching. Therefore, the scribing needle is prevented from rotating, and the scribing precision is improved.
Furthermore, scales are arranged on the cross beam. The cross beam and the support body can move relatively, and scales are arranged on the cross beam to facilitate quick and accurate marking.
Further, the support body is provided with a matching hole of the bearing supporting shaft, and the hole shaft between the bearing supporting shaft and the matching hole of the support body is in interference fit.
Furthermore, the end face rolling bearing is in interference fit with the bearing supporting shaft, and the circumferential face rolling bearing is in clearance fit with the pin.
Further, the support body is a metal plate section.
The principle is as follows: a hand-held inner and outer circle reference marking tool is a universal marking tool designed and manufactured based on advantages and disadvantages of a 'center-filling method' and a 'special ground standard alignment method for fixing an arm drilling machine'. The principle is as follows: the end face rolling bearing and the circumferential surface roll to act as a walking bearing, if the part to be machined has one or two reference surfaces, the walking bearing of the marking tool rolls and advances along the reference surface of the part to be machined, and the scriber draws a fixed marking relative to the reference surface on the end face of the part.
Has the advantages that:
(1) the volume is small, the weight is light, the carrying is easy, the operation is simple, the operation can be carried out by one hand, and the storage is convenient;
(2) the application range is wide, the operation is not limited by the field, the line can be marked at any time, and the hoisting operation in the line marking process is avoided;
(3) the tool is not influenced by the shape of the annular part, and the size of the tool can be used for marking;
(4) the tool can also be used for linear scribing of a super-long workpiece;
(5) through the close fit of all parts in the machining process, if the cross beam is a square rod, the cross beam is matched with the support body through hole in a square shape; the scriber is matched with the cross beam in a square mode. Therefore, the scribing needle is prevented from rotating, and the scribing precision is improved.
Drawings
FIG. 1 is a schematic diagram of a Han nationality key structure of a scribing tool;
FIG. 2 is a schematic structural view of a stent body;
in the figure, a cross beam 1, a spring adjusting screw 11, a spring adjusting nut 12, a bracket body 2, a bolt 21, a matching through hole 22, a threaded hole 23, an end face rolling bearing 3, a supporting shaft 31, a spacer ring 32, a circumferential surface rolling bearing 4, a pin 41, a scriber 5, a spring 51 and a spring seat 52.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Fig. 1 to 2 show a handheld hollow annular component internal and external circle reference marking tool, which comprises a cross beam 1 and a scriber 5, wherein the scriber 5 is fixed at one end of the cross beam 1, the handheld hollow annular component internal and external circle reference marking tool further comprises a support body 2, the support body 2 is provided with a matching through hole 22 for movably mounting the cross beam 1, and the top end of the support body 2 is also provided with a threaded hole 23 for fixing the cross beam 1 and a matching bolt 21; the support body 2 is also fixedly provided with at least two bearing supporting shafts 31 which are vertical to the support body, and one ends of the bearing supporting shafts 31, which are close to the scriber 5, are matched with the fixed end face rolling bearings 3; the bracket is also provided with at least two matching holes for installing the circumferential surface rolling bearing 4, and the bottom end of the bracket body 2 is also provided with a pin 41 matching hole for fixing the circumferential surface rolling bearing 4; the cross beam 1 is provided with a through hole which is matched with the scriber 5 to move up and down, the scriber 5 is sleeved with a spring 51 above the cross beam 1, the cross beam 1 is fixedly connected with a cylindrical spring adjusting screw rod 11, and the spring adjusting screw rod 11 is in threaded connection with a spring adjusting nut 12. The spring adjusting screw 11 and the spring adjusting nut 12 are used for adjusting the space of the scriber 5 floating up and down and the elastic force of the spring 51. In this embodiment, two sets of the face rolling bearing 3 and the circumferential surface rolling bearing 4 are provided.
The bearing supporting shaft 31 is sleeved with a spacer ring 31 between the bracket body 2 and the end face rolling bearing 3, and the spacer ring 31 is used for limiting the end face rolling bearing 3 and preventing the end face rolling bearing 3 from shaking.
The top end of the scriber 5 is fixedly connected with a spring seat 52. The bottom end of the spring 51 can also be provided with a spring seat 52, and the spring 51 is clamped between the cross beam 1 and the spring seat 52 at the top end of the scriber 5.
The end of the pin 41 for fixing the rolling bearing 4 with the circumferential surface is provided with a thread, and the matching hole of the pin 41 is in threaded connection with the pin 41, as shown in fig. 2, the matching hole is a threaded hole 23.
Scales are arranged on the cross beam 1. The cross beam 1 and the support body 2 can move relatively, and scales are arranged on the cross beam 1 to facilitate quick and accurate marking.
The support body 2 is provided with a matching hole of a bearing supporting shaft 31, and the hole shaft between the bearing supporting shaft 31 and the matching hole of the support body 2 is in interference fit. The end face rolling bearing 3 is in interference fit with the bearing supporting shaft 31, and the circumferential face rolling bearing 4 is in clearance fit with the pin 41.
The support body 2 is a metal plate section bar, and the cross beam 1 is a square metal section bar.
The principle is as follows: a hand-held inner and outer circle reference marking tool is a universal marking tool designed and manufactured based on advantages and disadvantages of a 'center-filling method' and a 'special ground standard alignment method for fixing an arm drilling machine'. The principle is as follows: the rolling of the end face rolling bearing 3 and the circumferential face act as a walking bearing, if the part to be machined has one or two reference surfaces, the walking bearing of the scribing tool rolls and advances along the reference surface of the part to be machined, and the scriber 5 draws a fixed scribing line on the end face of the part relative to the reference surface. Based on above, marking tool need not be too big, small.
In order to reduce the weight, the tool bracket body 2 of the utility model is made of aluminum plates, the pin 41 and the supporting shaft 31 are made of copper, so that the rusting can be prevented, and the beam 1 is processed by 45# steel and then quenched, so that the rigidity is increased; the scriber 5 is made of high alloy tool steel; the walking bearing uses a common deep groove ball bearing.
To sum up, the utility model discloses obvious beneficial effect does:
(1) the volume is small, the weight is light, the carrying is easy, the operation is simple, the operation can be carried out by one hand, and the storage is convenient;
(2) the application range is wide, the operation is not limited by the field, the line can be marked at any time, and the hoisting operation in the line marking process is avoided;
(3) the tool is not influenced by the shape of the annular part, and the size of the tool can be used for marking;
(4) the tool can also be used for linear scribing of a super-long workpiece;
(5) through the close fit of all parts in the machining process, if the cross beam 1 is a square rod, the cross beam 1 is in square fit with the through hole 22 of the bracket body 2; the scriber 5 is matched with the beam 1 in a square mode. Thus, the scribing pin 5 is prevented from rotating, and the scribing accuracy is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept thereof within the technical scope of the present invention.
Claims (8)
1. A handheld marking tool for reference of inner and outer circles of a hollow annular component comprises a cross beam and a marking awl, wherein the marking awl is fixed at one end of the cross beam; the support body is also fixedly provided with at least two bearing supporting shafts perpendicular to the support body, and one ends of the bearing supporting shafts, which are close to the scriber, are matched with the fixed end face rolling bearings; the bracket is also provided with at least two matching holes for installing the rolling bearings with the circumferential surfaces, and the bottom end of the bracket body is also provided with a pin matching hole for fixing the rolling bearings with the circumferential surfaces; the cross beam is provided with a through hole matched with the scriber to move up and down, the scriber above the cross beam is sleeved with a spring, the cross beam is fixedly connected with a cylindrical spring adjusting screw rod, and the spring adjusting screw rod is in threaded connection with a spring adjusting nut.
2. The hand-held, hollow annular part inner and outer circle fiducial marking tool of claim 1, wherein the bearing support shaft nests a spacer ring between the holder body and the end face rolling bearing, the spacer ring for limiting the end face rolling bearing.
3. The hand held hollow annular member inner and outer circle fiducial marking tool of claim 1, wherein a spring seat is fixedly attached to the tip of the stylus.
4. The hand held hollow ring member inner and outer circumference reference marking tool as claimed in claim 1, wherein there are two sets of said end face rolling bearing and said circumferential face rolling bearing; the support body is a metal plate section.
5. The hand-held tool for marking reference to inner and outer circumferences of a hollow ring member as claimed in claim 1, wherein the end of the pin for fixing the rolling bearing having the circumferential surface is provided with a screw thread, and the fitting hole of the pin is screw-engaged with the pin.
6. The hand held hollow annular member inner and outer circle reference marking tool of claim 1 wherein said cross member is a square bar and said cross member is square in mating engagement with the bracket body mating through hole.
7. The hand held hollow annular member inner and outer circle fiducial marking tool of claim 1, wherein the stylus and cross bar fit in a square fit.
8. The hand held hollow annular member inner and outer circle reference marking tool of claim 1 wherein said cross member is graduated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920643109.5U CN209887572U (en) | 2019-05-07 | 2019-05-07 | Hand-held type hollow annular part inner and outer circle benchmark marking tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920643109.5U CN209887572U (en) | 2019-05-07 | 2019-05-07 | Hand-held type hollow annular part inner and outer circle benchmark marking tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209887572U true CN209887572U (en) | 2020-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920643109.5U Expired - Fee Related CN209887572U (en) | 2019-05-07 | 2019-05-07 | Hand-held type hollow annular part inner and outer circle benchmark marking tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209887572U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112917449A (en) * | 2021-01-08 | 2021-06-08 | 段佳龙 | Quick marking device of steel sheet for intelligent manufacturing |
| CN113714992A (en) * | 2021-09-01 | 2021-11-30 | 华能伊敏煤电有限责任公司 | Portable marking tool |
-
2019
- 2019-05-07 CN CN201920643109.5U patent/CN209887572U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112917449A (en) * | 2021-01-08 | 2021-06-08 | 段佳龙 | Quick marking device of steel sheet for intelligent manufacturing |
| CN112917449B (en) * | 2021-01-08 | 2024-05-10 | 保定福桥新材料科技有限公司 | Intelligent manufacturing steel plate quick scribing device |
| CN113714992A (en) * | 2021-09-01 | 2021-11-30 | 华能伊敏煤电有限责任公司 | Portable marking tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200103 Termination date: 20210507 |
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| CF01 | Termination of patent right due to non-payment of annual fee |