CN112692806A - Center-dividing scribing device and using method thereof - Google Patents

Center-dividing scribing device and using method thereof Download PDF

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Publication number
CN112692806A
CN112692806A CN202011542630.3A CN202011542630A CN112692806A CN 112692806 A CN112692806 A CN 112692806A CN 202011542630 A CN202011542630 A CN 202011542630A CN 112692806 A CN112692806 A CN 112692806A
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China
Prior art keywords
rack
caliper
workpiece
center
dividing
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CN202011542630.3A
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Chinese (zh)
Inventor
朱正锋
汪旭琪
曹松
杜天彬
王少平
姜伟航
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Leadrun Maoda Casting Co ltd Jiangsu
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Leadrun Maoda Casting Co ltd Jiangsu
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Priority to CN202011542630.3A priority Critical patent/CN112692806A/en
Publication of CN112692806A publication Critical patent/CN112692806A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25HWORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H7/00Marking-out or setting-out work
    • B25H7/04Devices, e.g. scribers, for marking
    • B25H7/045Devices, e.g. scribers, for marking characterised by constructional details of the marking elements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

The invention relates to the technical field of machining, in particular to a center-dividing marking device which comprises a support, a rack, calipers with zero position and millimeter scales, a cylindrical straight gear, a rotating shaft, a scriber, a rolling bearing and a nut, wherein the rack is provided with a plurality of straight gears; when the center-dividing scribing device is used, the center-dividing scribing device comprises the following steps: firstly, adjusting zero position; secondly, clamping the workpiece; thirdly, fixing a rack; fourthly, drawing a central line; and fifthly, obtaining the size. The center-dividing scribing device has the advantages of simple structure, simplicity and convenience in operation and high efficiency, can quickly perform center-dividing scribing on workpieces, and is suitable for large-batch processing and scribing production; when the device is used, the requirement on the placing mode of the workpiece is not high, the workpiece does not need to be placed vertically, and only the scribing operation space is enough; the position of the central line can be determined by utilizing the relative position of the size of the workpiece without marking tools such as a reference platform, a jack and the like; the straight gear and the rack are high in meshing transmission precision, and the size of a workpiece can be indirectly measured by utilizing scale conversion.

Description

Center-dividing scribing device and using method thereof
Technical Field
The invention relates to the technical field of machining, in particular to a center-dividing marking device for molding and manufacturing materials such as casting, forging and the like and a using method thereof.
Background
Scribing is a first process in machining and is also a very important process, the machining position and machining allowance of a workpiece are determined by scribing, and meanwhile, whether the shape and the size of a workpiece blank accord with drawings or not is checked. When the blank material size is not enough and the material shortage condition exists, the material borrowing is carried out through marking, meanwhile, the loss caused by batch disqualification is avoided, and the method is widely applied to single piece or small batch processing production.
When the machining position and the machining allowance of the workpiece are determined by scribing, no machining allowance exists on one side of the workpiece due to reasons of insufficient blank material shortage size, heat treatment deformation and the like, and in order to enable machining allowances to exist on two sides of the workpiece, the machining position needs to be adjusted to the other side through scribing a center line so as to perform remediation. However, the existing center-dividing scribing technology has the following disadvantages: 1. the middle marking process needs a plurality of tools, including a reference platform, a sizing block, a jack, a height vernier caliper, a marking needle and the like; 2. the operation is not simple and convenient, the workpiece needs to be centered only in the vertical direction, sometimes the workpiece needs to be placed in a standing mode, and the position of the center line is determined by utilizing the upper position and the lower position of the centered dimension and calculating the height difference through the measurement of a height vernier caliper; 3. the work efficiency is low, and the batch scribing processing production progress is influenced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects in the prior art, the center-dividing scribing device and the use method thereof are provided.
The technical scheme adopted by the invention is as follows: the utility model provides a center-parting marking device, is used for the work piece, including support, rack and adaptation in the cylinder straight-teeth gear of rack, cylinder straight-teeth gear suit cover establish antifriction bearing's axis of rotation outside the cover, antifriction bearing arranges in between cylinder straight-teeth gear and the axis of rotation its linkage. The support is used for fixing other parts of the center marking device and plays a supporting role.
The rack include first rack and second rack, first rack and second rack symmetry assembly are in the support, move on the removal track in the support and mesh with the cylinder straight-teeth gear, fixed first slide caliper rule and the second slide caliper rule that are equipped with spacing work piece respectively on first rack and the second rack, first slide caliper rule and second slide caliper rule adopt central symmetry to set up, first slide caliper rule and second slide caliper rule length equal. When the first rack and the second rack which are symmetrically assembled move, the displacements in opposite directions can be generated; the first caliper and the second caliper which are arranged in central symmetry can be respectively fixed on two sides of the workpiece; when the cylindrical straight gear is rotated, the first rack and the second rack can be driven to do linear motion with opposite displacement directions and equal distance, and the first caliper and the second caliper do the same motion with the first rack and the second rack.
The rotating shaft and the rolling bearing are assembled together in a support matched with the rotating shaft, and the lower end of the rotating shaft is fixedly connected with a scriber for determining the center of a workpiece. When the slide caliper moves, the tip end of the scriber is always positioned at the center of the clamping ends of the first caliper and the second caliper, and is used for determining the center of a workpiece and carrying out center division and scribing. The outer side or the inner side of the clamping section of the caliper clamps the inner side or the outer side of the workpiece, the center of the workpiece is determined by utilizing the principle that the scriber is always positioned at the center positions of the first caliper and the second caliper, the nut is screwed, the whole center dividing and scribing device is moved back and forth, the center line is scribed on the workpiece, and the size of the workpiece can be accurately measured through the millimeter scale on the caliper.
The end of the bracket is screwed with a nut, and the rack can be controlled to be fixed and moved by screwing and unscrewing the nut. Preferably, two nuts are arranged at the front end and the rear end of the bracket respectively.
The first rack and the first caliper, and the second rack and the second caliper are perpendicular to each other in the vertical direction, so that the workpiece can be fixed without displacement when the racks are displaced.
The horizontal heights of the first rack and the second rack are consistent or inconsistent. When the measuring tool is used, the tip end of the scriber is always positioned at the center of the clamping ends of the first caliper and the second caliper.
The left side and the right side of the support are communicated to form a cavity for fixing the rack and the cylindrical straight gear, the upper end of the support is provided with a hollow groove communicated with the cavity, and the lower side of the support is provided with a through hole communicated with the cavity for fixing the rotating shaft and the rolling bearing. The cylindrical straight gear and the rack are in meshed transmission, and the modulus, the tooth number and the pressure angle of the cylindrical straight gear and the modulus and the tooth number of the rack are calculated through design, so that the transmission precision can reach 0.1mm, and the center division and the lineation can be accurately performed.
The first caliper and the second caliper are provided with zero positions and millimeter scales and used for clamping two sides of a workpiece and measuring the size of the workpiece.
A method of using a center-of-gravity scribing apparatus for a workpiece, comprising the steps of:
step one, adjusting zero position: firstly, loosening a nut, and aligning the zero positions of the first caliper and the second caliper with the tip end of the scriber by moving the first rack and the second rack, wherein the three points are positioned on the same straight line;
secondly, clamping the workpiece: after the first caliper and the second caliper adjust zero positions, the cylindrical straight gear is rotated to drive the first rack and the second rack to move, so that the clamping ends of the first caliper and the second caliper simultaneously and respectively clamp two sides of a workpiece;
step three, fixing a rack: after the workpiece is clamped, the nut is screwed down to prevent the first rack and the second rack from moving;
fourthly, drawing a central line: after the rack is fixed, the centering scribing device is moved back and forth along two side edges of the workpiece, so that the scriber can scribe a central line on the workpiece;
and fifthly, obtaining the size: and after the central line is drawn, the scale values of the first caliper and the second caliper are read, and then the size of the workpiece is obtained through calculation.
Another method of using a center-of-line apparatus for a workpiece, comprising the steps of:
step one, adjusting zero position: firstly, loosening a nut, and aligning the zero positions of the first caliper and the second caliper with the tip end of the scriber by moving the first rack and the second rack, wherein the three points are positioned on the same straight line;
secondly, clamping the workpiece: after the first caliper and the second caliper adjust zero positions, the cylindrical straight gear is rotated to drive the first rack and the second rack to move, so that the clamping ends of the first caliper and the second caliper respectively abut against two sides of the inner contour of the workpiece;
step three, fixing a rack: after the workpiece is clamped, the nut is screwed down to prevent the first rack and the second rack from moving;
fourthly, drawing a central line: after the rack is fixed, the centering scribing device moves back and forth along two side edges of the inner contour of the workpiece, so that the scriber can scribe a central line on the workpiece;
and fifthly, obtaining the size: and after the central line is drawn, the scale values of the first caliper and the second caliper are read, and then the size of the workpiece is obtained through calculation.
Compared with the prior art, the invention has the following advantages:
1. the center-dividing scribing device has the advantages of simple structure, simplicity and convenience in operation and high efficiency, can quickly perform center-dividing scribing on workpieces, and is suitable for large-batch processing and scribing production;
2. in the using process of the center-dividing scribing device, the requirement on the placing mode of the workpiece is not high, the workpiece does not need to be vertically placed, and only the scribing operation space is enough;
3. the center line position can be determined by utilizing the relative position of the size of the workpiece without marking tools such as a reference platform, a jack and the like in the using process of the center marking device;
4. the center-dividing marking device has the advantages that the meshing transmission precision of the straight gear and the rack is high, the caliper is provided with millimeter scales, and the dimension of a workpiece can be indirectly measured by utilizing scale conversion.
Drawings
FIG. 1 is a schematic view of the center-scoring device of the present invention in an initial position;
FIG. 2 is a front view of the center scoring device of the present invention in an initial position;
FIG. 3 is a perspective view of the center-marking apparatus of the present invention in an initial position;
FIG. 4 is a schematic view of one embodiment of the center-scoring device of the present invention in operation;
fig. 5 is another schematic view of the center-scribing apparatus of the present invention in operation.
Reference numbers in the figures: 1-bracket, 2-1-first rack, 3-1-second rack, 2-first caliper, 3-2-second caliper, 4-cylindrical spur gear, 5-transmission shaft, 6-scriber, 7-rolling bearing, 8-nut, 9-workpiece.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the embodiments of the present invention, but the scope of the present invention is not limited to the following examples.
Example 1
The center-parting marking device shown in figures 1-4 is used for a workpiece 9 and comprises a bracket 1, a rack and a cylindrical spur gear 4 matched with the rack, wherein the cylindrical spur gear 4 is sleeved outside a rotating shaft 5 sleeved with a rolling bearing 7, and the rolling bearing 7 is arranged between the cylindrical spur gear 4 and the rotating shaft 5 to enable the cylindrical spur gear 4 and the rotating shaft 5 to be linked; the rack comprises a first rack 2-1 and a second rack 3-1, the first rack 2-1 and the second rack 3-1 are symmetrically assembled in the bracket 1, move on a moving track in the bracket 1 and are meshed with the cylindrical straight gear 4, a first caliper 2-2 and a second caliper 3-2 of a limiting workpiece 9 are respectively fixed on the first rack 2-1 and the second rack 3-1, the first caliper 2-2 and the second caliper 3-2 are arranged in a central symmetry manner, and the first caliper 2-2 and the second caliper 3-2 are equal in length; the rotating shaft 5 and the rolling bearing 7 are assembled together in the support 1 matched with the rotating shaft, the lower end of the rotating shaft 5 is fixedly connected with a scriber 6 for determining the center of a workpiece 9, and nuts 8 are screwed at the front end and the rear end of the support 1. The first rack 2-1 and the first caliper 2-2, and the second rack 3-1 and the second caliper 3-2 are vertical to each other, and the horizontal heights of the first rack 2-1 and the second rack 3-1 are not consistent. The left side and the right side of the bracket 1 are communicated to form a cavity for fixing the rack and the cylindrical straight gear 4, the upper end of the bracket is provided with a hollow groove communicated with the cavity, and the lower side of the bracket is provided with a through hole communicated with the cavity for fixing the rotating shaft 5 and the rolling bearing 7. The first caliper 2-2 and the second caliper 3-2 are provided with zero positions and millimeter scales.
The use method of the center scribing device is used for the workpiece 9 and comprises the following steps:
step one, adjusting zero position: firstly, loosening the nut 8, and aligning the zero positions of the first caliper 2-2 and the second caliper 3-2 with the tip of the scriber 6 by moving the first rack 2-1 and the second rack 3-1, wherein the three points are positioned on the same straight line;
step two, clamping the workpiece 9: after the first caliper 2-2 and the second caliper 3-2 adjust zero positions, the cylindrical straight gear 4 is rotated to drive the first rack 2-1 and the second rack 3-1 to move, so that the clamping ends of the first caliper 2-2 and the second caliper 3-2 clamp two sides of a workpiece 9 respectively;
step three, fixing a rack: after the workpiece 9 is clamped, the nut 8 is screwed to prevent the first rack 2-1 and the second rack 3-1 from moving;
fourthly, drawing a central line: after the rack is fixed, the centering scribing device moves back and forth along the two side edges of the workpiece 9, so that the scribing needle 6 can scribe a central line on the workpiece 9;
and fifthly, obtaining the size: and after a central line is drawn, the scale values of the first caliper 2-2 and the second caliper 3-2 are read, and then the size of the workpiece 9 is obtained through calculation.
Example 2
A center-parting marking device as shown in fig. 1-3 and fig. 5, which is used for a workpiece 9 and comprises a bracket 1, a rack and a spur gear 4 matched with the rack, wherein the spur gear 4 is sleeved outside a rotating shaft 5 of a rolling bearing 7, and the rolling bearing 7 is arranged between the spur gear 4 and the rotating shaft 5 to enable the spur gear 4 and the rotating shaft 5 to be linked; the rack comprises a first rack 2-1 and a second rack 3-1, the first rack 2-1 and the second rack 3-1 are symmetrically assembled in the bracket 1, move on a moving track in the bracket 1 and are meshed with the cylindrical straight gear 4, a first caliper 2-2 and a second caliper 3-2 of a limiting workpiece 9 are respectively fixed on the first rack 2-1 and the second rack 3-1, the first caliper 2-2 and the second caliper 3-2 are arranged in a central symmetry manner, and the first caliper 2-2 and the second caliper 3-2 are equal in length; the rotating shaft 5 and the rolling bearing 7 are assembled together in the support 1 matched with the rotating shaft, the lower end of the rotating shaft 5 is fixedly connected with a scriber 6 for determining the center of a workpiece 9, and nuts 8 are screwed at the front end and the rear end of the support 1. The first rack 2-1 and the first caliper 2-2, and the second rack 3-1 and the second caliper 3-2 are vertical to each other, and the horizontal heights of the first rack 2-1 and the second rack 3-1 are not consistent. The left side and the right side of the bracket 1 are communicated to form a cavity for fixing the rack and the cylindrical straight gear 4, the upper end of the bracket is provided with a hollow groove communicated with the cavity, and the lower side of the bracket is provided with a through hole communicated with the cavity for fixing the rotating shaft 5 and the rolling bearing 7. The first caliper 2-2 and the second caliper 3-2 are provided with zero positions and millimeter scales.
The use method of the center scribing device is used for the workpiece 9 and comprises the following steps:
step one, adjusting zero position: firstly, loosening the nut 8, and aligning the zero positions of the first caliper 2-2 and the second caliper 3-2 with the tip of the scriber 6 by moving the first rack 2-1 and the second rack 3-1, wherein the three points are positioned on the same straight line;
step two, clamping the workpiece 9: after the first caliper 2-2 and the second caliper 3-2 adjust zero positions, the cylindrical straight gear 4 is rotated to drive the first rack 2-1 and the second rack 3-1 to move, so that clamping ends of the first caliper 2-2 and the second caliper 3-2 respectively abut against two sides of the inner contour of the workpiece 9 at the same time;
step three, fixing a rack: after the workpiece 9 is clamped, the nut 8 is screwed to prevent the first rack 2-1 and the second rack 3-1 from moving;
fourthly, drawing a central line: after the rack is fixed, the centering scribing device moves back and forth along two side edges of the inner outline of the workpiece 9, so that the scriber 6 can scribe a central line on the workpiece 9;
and fifthly, obtaining the size: and after a central line is drawn, the scale values of the first caliper 2-2 and the second caliper 3-2 are read, and then the size of the workpiece 9 is obtained through calculation.
The above description is a preferred embodiment of the present invention, and other modifications are possible for those skilled in the art based on the technical idea of the present invention. All technical schemes without creative work on the basis of the technical scheme of the invention belong to the protection scope of the invention.

Claims (7)

1. A center-dividing scribing device for a workpiece (9), characterized by: comprises a bracket (1), a rack and a cylindrical straight gear (4) matched with the rack, wherein the cylindrical straight gear (4) is sleeved outside a rotating shaft (5) sleeved with a rolling bearing (7), the rolling bearing (7) is arranged between the cylindrical straight gear (4) and the rotating shaft (5) to enable the rolling bearing to be linked,
the racks comprise a first rack (2-1) and a second rack (3-1), the first rack (2-1) and the second rack (3-1) are symmetrically assembled in the bracket (1), move on a moving track in the bracket (1) and are meshed with the straight cylindrical gear (4),
a first caliper (2-2) and a second caliper (3-2) of a limiting workpiece (9) are respectively and fixedly arranged on the first rack (2-1) and the second rack (3-1), the first caliper (2-2) and the second caliper (3-2) are arranged in a centrosymmetric manner, the first caliper (2-2) and the second caliper (3-2) are equal in length, the first caliper (2-2) and the second caliper (3-2) are provided with a zero position and millimeter scales,
the rotating shaft (5) and the rolling bearing (7) are assembled together in the support (1) matched with the rotating shaft, the lower end of the rotating shaft (5) is fixedly connected with a scriber (6) for determining the center of a workpiece (9),
the end part of the bracket (1) is screwed with a nut (8).
2. The center-dividing scribing apparatus according to claim 1, wherein: the two nuts (8) are respectively arranged at the front end and the rear end of the bracket (1).
3. The center-dividing scribing apparatus according to claim 1, wherein: the horizontal heights of the first rack (2-1) and the second rack (3-1) are consistent or inconsistent.
4. The center-dividing scribing apparatus according to claim 1, wherein: the first rack (2-1) is vertical to the first caliper (2-2), and the second rack (3-1) is vertical to the second caliper (3-2) in the vertical direction.
5. The center-dividing scribing apparatus according to claim 1, wherein: the left side and the right side of the support (1) are communicated to form a cavity for fixing the rack and the cylindrical straight gear (4), the upper end of the support is provided with a hollow groove communicated with the cavity, and the lower side of the support is provided with a through hole communicated with the cavity for fixing the rotating shaft (5) and the rolling bearing (7).
6. Use of a device according to claims 1-5 for center-scoring of a workpiece (9), characterized in that: the method comprises the following steps:
step one, adjusting zero position: firstly, loosening a nut (8), and aligning zero positions of a first caliper (2-2) and a second caliper (3-2) with the tip of a scriber (6) by moving the first rack (2-1) and the second rack (3-1), wherein the three points are positioned on the same straight line;
secondly, clamping the workpiece (9): after the first caliper (2-2) and the second caliper (3-2) adjust zero positions, the cylindrical straight gear (4) is rotated to drive the first rack (2-1) and the second rack (3-1) to move, so that the clamping ends of the first caliper (2-2) and the second caliper (3-2) clamp two sides of a workpiece (9) simultaneously and respectively;
step three, fixing a rack: after the workpiece (9) is clamped, the nut (8) is screwed down to prevent the first rack (2-1) and the second rack (3-1) from moving;
fourthly, drawing a central line: after the rack is fixed, the centering scribing device is moved back and forth along two side edges of the workpiece (9) to enable the scriber (6) to scribe a central line on the workpiece (9);
and fifthly, obtaining the size: and after a central line is drawn, the scale values of the first caliper (2-2) and the second caliper (3-2) are read, and the size of the workpiece (9) is obtained through calculation.
7. Use of a device according to claims 1-5 for center-scoring of a workpiece (9), characterized in that: the method comprises the following steps:
step one, adjusting zero position: firstly, loosening a nut (8), and aligning zero positions of a first caliper (2-2) and a second caliper (3-2) with the tip of a scriber (6) by moving the first rack (2-1) and the second rack (3-1), wherein the three points are positioned on the same straight line;
secondly, clamping the workpiece (9): after the first caliper (2-2) and the second caliper (3-2) adjust zero positions, the cylindrical straight gear (4) is rotated to drive the first rack (2-1) and the second rack (3-1) to move, so that clamping ends of the first caliper (2-2) and the second caliper (3-2) respectively abut against two sides of the inner contour of the workpiece (9) at the same time;
step three, fixing a rack: after the workpiece (9) is clamped, the nut (8) is screwed down to prevent the first rack (2-1) and the second rack (3-1) from moving;
fourthly, drawing a central line: after the rack is fixed, the centering scribing device moves back and forth along two side edges of the inner outline of the workpiece (9) to enable the scriber (6) to scribe a central line on the workpiece (9);
and fifthly, obtaining the size: and after a central line is drawn, the scale values of the first caliper (2-2) and the second caliper (3-2) are read, and the size of the workpiece (9) is obtained through calculation.
CN202011542630.3A 2020-12-24 2020-12-24 Center-dividing scribing device and using method thereof Pending CN112692806A (en)

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CN114193423A (en) * 2021-12-17 2022-03-18 重庆川仪调节阀有限公司 Part bolt hole scribing and positioning method
CN115890121A (en) * 2023-01-06 2023-04-04 江苏金元环保科技集团有限公司 Frock clamp based on processing of electronic steel push-and-pull door

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CN114193423A (en) * 2021-12-17 2022-03-18 重庆川仪调节阀有限公司 Part bolt hole scribing and positioning method
CN115890121A (en) * 2023-01-06 2023-04-04 江苏金元环保科技集团有限公司 Frock clamp based on processing of electronic steel push-and-pull door

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