CN217845000U - Device for measuring width of step on end face of shaft part - Google Patents
Device for measuring width of step on end face of shaft part Download PDFInfo
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- CN217845000U CN217845000U CN202222145707.4U CN202222145707U CN217845000U CN 217845000 U CN217845000 U CN 217845000U CN 202222145707 U CN202222145707 U CN 202222145707U CN 217845000 U CN217845000 U CN 217845000U
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Abstract
The utility model discloses a device for measuring the width of the end surface step of an axle part, which comprises a V-shaped support to be placed on the big end of the end surface step of a measured axle; the lower part of the V-shaped support is hinged with a measuring rod, two ends of the measuring rod respectively support the outer end face of the small end of the end face step of the measured shaft and the lower end of the meter type length measuring tool, and the distances from the contact points at the two ends to the hinged part are the same, so that the meter type length measuring tool fixed on the upper part of the V-shaped support can reflect the variation of the width size of the end face step; when the measuring instrument is used, a sample column is calibrated and zero-marked, the zero reference of the table type length measuring tool is the width dimension of the end surface step of the sample column, then a measured workpiece is measured, and the indicating value of the table type length measuring tool is the dimension error between the width of the end surface step of the workpiece and the width of the step of the sample column. The utility model discloses axle type part terminal surface step can be overcome and the problem that is difficult to measure is processed man-hour on the lathe to efficient, measure accurate, convenient to use.
Description
Technical Field
The utility model belongs to the technical field of axle type processing, a internal-combustion engine camshaft measurement technique is related to, specifically is an axle type part terminal surface step width measuring device.
Background
The end surface steps of the shaft parts are usually used for an anti-thrust structure, are commonly used for a stepped shaft-shaped cam shaft, and the anti-thrust structure needs to control the feeding amount according to axial measurement data in the grinding process so as to ensure the dimensional precision requirement of a workpiece during the grinding process.
Axial measurement of the end surface step (as shown in fig. 1) is generally performed by using a general measuring tool such as a depth micrometer, a digital display depth caliper, or the like. However, when the step width of the end face of the shaft part is measured on the machine tool, the step width is affected by the tailstock of the machine tool, so that the step width cannot be measured or cannot be measured due to interference. In addition, the camshaft is detached from the machine tool for measurement and then is installed again, so that the machining standard is damaged due to multiple clamping, and the camshaft is not suitable for use. Therefore, in order to guide the machining of the shaft parts already clamped on the machine tool, there is no measuring device for online measuring the step width of the clamping part of the tail end of the shaft part close to the tailstock of the machine tool.
Disclosure of Invention
In order to overcome not enough among the background art, the utility model provides an axle type part terminal surface step width measuring device and method, aim at, through designing an axle type part terminal surface step width measuring device and application method, on-line measuring terminal surface step width error avoids repeated clamping to guide to process the terminal surface step of this axle type part, and evade the influence of grinding machine tailstock to measuring through the device.
In order to achieve the above object, the utility model provides a following technical scheme: the device for measuring the width of the step on the end face of the shaft part comprises a V-shaped support, wherein a pair of wing plates which are symmetrical to each other is fixedly arranged at the lower part of the V-shaped support, and when the V-shaped support is placed on the large end of the step at one end of a workpiece to be detected, the inner side of each wing plate is tangent to the circumferential side face of the large end of the step; the end face of one side of each wing plate is fixedly connected with a baffle plate, and when the V-shaped support is placed on the large end of the step, the side face of the baffle plate is attached to the outer end face of the large end of the step;
a measuring rod is hinged between the lower part of the V-shaped support and the two wing plates; the measuring rod is L-shaped and comprises a straight rod part with the middle part hinged on the V-shaped support and an extension part fixedly connected with one end of the straight rod part; the lower end of the extension part is provided with a measuring head, and when the V-shaped support is placed on the large step end, the inner end face of the measuring head abuts against the outer end face of the small step end; a contact head is arranged on the upper surface of the other end of the straight rod part, which is far away from the extension part;
the meter type length measuring tool is vertically and fixedly connected to the V-shaped support, and a measuring head at the lower end of the meter type length measuring tool is abutted against the contact head;
the inner end surface of the measuring head is designed to be an arc surface, and when the measuring rod rotates around the hinged position of the measuring rod, the inner end surface of the measuring head can always abut against the outer end surface of the small step end; and when the straight rod part is in a horizontal state, the hinged part is positioned at the midpoint of a horizontal projection connecting line between the innermost side of the measuring head and the measuring head at the lower end of the meter-type length measuring tool.
As a further optimization, the device also comprises a first spring and a second spring; the first spring and the second spring are arranged in the V-shaped support, the lower ends of the first spring and the second spring are respectively supported on the upper surfaces of the left side and the right side of the hinge point in the middle of the straight rod part, and the first spring and the second spring are used for driving the measuring rod to keep balance in a normal state and do not rotate around the hinge point.
As further optimization, the upper part of the V-shaped support is provided with a set screw mounting hole and a plug mounting hole; the first spring and the second spring are respectively arranged at the lower parts of the fastening screw mounting hole and the plug mounting hole; the upper parts of the fastening screw mounting hole and the plug mounting hole are respectively in threaded connection with a slotted long cylindrical end fastening screw and a plug, and the fastening screw mounting hole and the plug mounting hole are used for respectively pressing against the upper surfaces of the first spring and the second spring.
As a further optimization, the gauge-type length measuring tool is a dial gauge.
And as further optimization, the fixing rod in the middle of the dial indicator is detachably inserted into the chuck positioning hole preset in the V-shaped support.
Preferably, the baffle is mounted on the end face of the wing plate through a socket head cap screw, and the baffle is detachable.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) The device converts the variation of the horizontal size into the variation of the vertical size through the rotatable measuring rod, and solves the problem that the distance between the end surface step of the shaft part and the tailstock of the machine tool is narrow and difficult to measure;
(2) The device has compact structure, light weight, single-hand operation of workers, convenient use and high efficiency;
(3) The parts clamped on the machine tool are measured, so that the machining reference offset error caused by repeated clamping is avoided;
(4) When the error value measuring device is used, the error value of the workpiece to the sample piece is taken as a measuring object, the feeding amount required by the machine tool can be quickly and accurately obtained, and therefore the working efficiency is improved.
In a word, the utility model discloses can overcome axle type part terminal surface step and add man-hour problem that is difficult to the measurement on the lathe to efficient, measure accurate, convenient to use.
Drawings
FIG. 1 is a schematic structural view of an end surface step of a shaft part mounted on a machine tool;
fig. 2 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 3 is a schematic structural view of the measuring rod of embodiment 1 of the present invention rotating at different angles;
FIG. 4 is a right side view of FIG. 2;
fig. 5 is a schematic structural view of a workpiece to be detected according to embodiment 1 of the present invention;
fig. 6 is a schematic structural view of a sample column according to embodiment 1 of the present invention.
In the figure: 1 denotes a V-shaped support, 100 denotes a wing plate, 2 denotes a cylindrical pin, 3 denotes a measuring rod, 4 denotes a spring, 5 denotes a slotted long cylindrical end set screw, 6 denotes a chuck positioning hole, 7 denotes a chuck, 8 denotes a knurled flat head screw, 9 denotes a bush, 10 denotes a dial gauge, 11 denotes a set screw mounting hole, 12 denotes a plug, 13 denotes a plug mounting hole, 14 denotes a spring, 15 denotes a measuring head, 16 denotes a baffle, 17 denotes an inner hexagonal screw, 18 denotes a workpiece large end outer circle, 19 denotes a workpiece large end outer end face, 20 denotes a spline, 21 denotes a spline large end outer end face, 22 denotes a spline large end outer circle, 31 denotes a straight rod portion, 32 denotes an extension portion, and 33 denotes a contact head.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only some of the preferred embodiments of the present invention, not all of them. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Example 1: please refer to fig. 1-6;
the embodiment provides the following technical scheme: the device for measuring the end face step width of the shaft part comprises a V-shaped support 1, wherein a pair of wing plates 100 which are symmetrical to each other is fixedly arranged at the lower part of the V-shaped support 1, and when the V-shaped support 1 is placed on the large end of a step at one end of a workpiece to be detected, the inner side of each wing plate 100 is tangent to the circumferential side face of the large end of the step; a baffle 16 is fixedly connected to the end face of one side of each wing plate 100, and when the V-shaped support 1 is placed on the large end of the step, the side face of the baffle 16 is attached to the outer end face of the large end of the step;
a measuring rod 3 is hinged between the two wing plates 100 at the lower part of the V-shaped support 1; in one embodiment, a hinge hole is formed in the middle of the measuring rod 3, the V-shaped support 1 is provided with a hinge shaft, and the measuring rod 3 is hinged on the V-shaped support 1 through the rotation of the hinge shaft in the hinge hole;
the measuring rod 3 is L-shaped and comprises a straight rod part 31 with the middle part hinged on the V-shaped support 1 and an extension part 32 fixedly connected with one end of the straight rod part; a measuring head 15 is arranged at the lower end of the extension part 32, and when the V-shaped support 1 is placed on the large step end, the measuring head 15 abuts against the outer end face of the small step end; a contact head 33 for supporting the lower end measuring head of the length measuring tool 10 is arranged on the upper surface of the other end of the straight rod part 31, which is far away from the extension part 32; therefore, at this time, the hinge hole is formed in the middle of the straight rod portion 31;
as shown in fig. 3, the inner end surface of the measuring head 15 is configured as an arc surface, and when the measuring rod 3 rotates around the hinge joint, the inner end surface of the measuring head 15 always abuts against the outer end surface of the small end of the step; when the straight rod part 31 is in a horizontal state, the hinge joint is positioned at the midpoint of a horizontal projection connecting line between the innermost side of the measuring head 15 and the measuring head at the lower end of the watch-type length measuring tool 10; it can be seen that if the initial position is set to be the horizontal state of the straight rod 31, there are D22> D20, D20= D1, D1> D21, that is, when the extending portion 32 swings upward, the measured step width dimension is increased to D22, which is a positive deviation, and when the extending portion 32 swings downward, the measured step width dimension is decreased to D21, which is a negative deviation. At this time, when the measuring rod 3 is moved within a small angle range, the error of the axial variation and the vertical variation is within 0.005 mm.
The length measuring instrument 10 is then attached to the V-shaped support 1, the lower measuring head of which abuts against the contact head 33. Therefore, the gauge-type length measuring tool 10 contacts the contact head 33 on the measuring rod 3 to vertically measure the length variation, and the width variation of the end surface step of the workpiece is reflected by the hinged measuring rod 3.
When the measuring head 15 is used, the V-shaped support 1 is pressed against the large step end of the workpiece, and meanwhile, the extending part 32 of the measuring rod 3 needs to be manually pushed, so that the measuring head 15 is abutted against the outer end face of the small step end, and the measuring error is avoided.
In order to facilitate the operation, the measuring head 15 is automatically abutted against the outer end face of the small end of the step, the measuring head further comprises a first spring 4 and a second spring 14, the first spring 4 and the second spring 14 are both arranged in the V-shaped support 1, and the lower ends of the first spring 4 and the second spring 14 are respectively abutted against the upper surfaces of the left side and the right side of the hinge point in the middle of the straight rod part 31, so that the measuring rod 3 is driven to keep balance in a normal state and does not rotate around the hinge point. When the device is used, the two springs are opposite in pushing direction, the measuring rod 3 can be driven to rotate in the positive direction and the negative direction, when the V-shaped support 1 is pressed against the large end of the step of the workpiece, the balance state of the measuring rod 3 is destroyed through the position relation of all parts of the workpiece to be measured until the measuring head 15 abuts against the outer end face of the small end of the step of the workpiece, so that the abutting of the measuring head 15 can be automatically completed, and an operator can conveniently operate the device by one hand.
In order to enable the two springs to be detachable, replaced and maintained, a set screw mounting hole 11 and a plug mounting hole 13 are formed in the upper portion of the V-shaped support 1; the first spring 4 and the second spring 14 are respectively arranged at the lower parts of the set screw mounting hole 11 and the plug mounting hole 13; the upper parts of the fastening screw mounting hole 11 and the plug mounting hole 13 are respectively in threaded connection with a slotted long cylindrical end fastening screw 5 and a plug 12, and are used for respectively pressing against the upper surfaces of the first spring 4 and the second spring 14.
The gauge-type length measuring tool 10 may be a dial gauge or a dial gauge, and the present embodiment uses a dial gauge.
In order to detachably mount the dial indicator, a fixing rod in the middle of the dial indicator is detachably inserted into a chuck positioning hole 6 preset in the V-shaped support 1; and the chuck 7, the knurled flat-head screw 8 and the bush 9 are matched in the chuck positioning hole 6, so that the dial indicator can be detached, the height position of the dial indicator can be adjusted, and the dial indicator is further convenient to use.
In order to make the frequently accessible components removable or replaceable, the baffle 16 is mounted to the end face of the wing 100 by means of socket head cap screws 17 for removal of the baffle 16.
When the device for measuring the width of the end surface step of the shaft part is used, the device comprises the following steps:
s1: manufacturing a sample column 20 so that the size of a step at the upper end of the sample column 20 is a qualified product size; namely, the error range of the theoretical design size is met;
s2: calibrating and zeroing, placing the step width measuring device on the sample column 20, enabling the wing plate 100 and the baffle plate 16 of the V-shaped support 1 to be respectively contacted with the outer circle 22 of the large end and the outer end face 21 of the large end of the step of the sample column 20, and driving the measuring head 15 to abut against the outer end face of the small end of the step of the sample column 20; rotating the dial plate of the dial indicator 10 to enable the pointer to point to 0, and finishing the calibration of the step width measuring device; therefore, no matter how the measuring rod 3 rotates, the width dimension of the end surface step of the workpiece to be measured is qualified when the pointer points to the 0 position, namely the width dimension is in accordance with the sample column 20.
S3, measuring a workpiece, stopping the machine tool, keeping a cutting tool away from the workpiece to be detected, placing the step width measuring device on the large step end at one end of the workpiece to be detected, enabling the wing plate 100 and the baffle plate 16 of the V-shaped support 1 to be respectively contacted with the outer circle 18 of the large step end of the workpiece and the outer end face 19 of the large step end of the workpiece, and driving the measuring head 15 to abut against the outer end face of the small step end of the workpiece; at this time, the indication value of the dial indicator 10 is the dimension error between the step width of the end face of the workpiece and the step width of the sample column 20. Therefore, the indication value of the dial indicator 10 only represents the error value from the qualified size at this time, not the absolute value of the end face step width; the error value is used for guiding and revising the feeding amount of the machine tool, so that the workpiece does not need to be detached from the machine tool, and repeated positioning is avoided.
The advantage of this embodiment is that, compared to the prior art,
(1) The device converts the variation of the horizontal dimension into the variation of the vertical dimension through the rotatable measuring rod 3, and solves the problem that the distance between the end surface step of the shaft part and the tailstock of the machine tool is narrow and difficult to measure;
(2) The device has compact structure, light weight, single-hand operation of workers, convenient use and high efficiency;
(3) The parts clamped on the machine tool are measured, so that the machining reference offset error caused by repeated clamping is avoided;
(4) When the error value measuring device is used, the error value of the workpiece to the sample piece is taken as a measuring object, the feeding amount required by the machine tool can be quickly and accurately obtained, and therefore the working efficiency is improved.
In a word, the problem that the end surface steps of the shaft parts are difficult to measure when being machined on a machine tool can be solved, and the method is high in efficiency, accurate in measurement and convenient to use.
The part of the utility model which is not detailed is the prior art; for a person skilled in the art, various technical features of the above embodiments may be arbitrarily combined, and for the sake of simplicity of description, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the technical features should be considered as the scope of the description in the present specification. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides an axle type part terminal surface step width measuring device which characterized in that: the device comprises a V-shaped support (1), wherein a pair of wing plates (100) which are symmetrical to each other is fixedly arranged at the lower part of the V-shaped support (1), and when the V-shaped support (1) is placed on the large end of a step at one end of a workpiece to be detected, the inner side of each wing plate (100) is tangent to the circumferential side surface of the large end of the step; the end face of one side of each wing plate (100) is fixedly connected with a baffle plate (16) for attaching the side face of each baffle plate (16) to the outer end face of the large step end when the V-shaped support (1) is placed on the large step end;
a measuring rod (3) is hinged to the lower part of the V-shaped support (1) and positioned between the two wing plates (100); the measuring rod (3) is L-shaped and comprises a straight rod part (31) with the middle part hinged on the V-shaped support (1) and an extension part (32) fixedly connected with one end of the straight rod part; a measuring head (15) is arranged at the lower end of the extension part (32) and is used for enabling the inner end face of the measuring head (15) to abut against the outer end face of the small end of the step when the V-shaped support (1) is placed on the large end of the step; a contact head (33) is arranged on the upper surface of the other end of the straight rod part (31) far away from the extension part (32);
the meter type length measuring tool (10) is vertically and fixedly connected to the V-shaped support (1), and a measuring head at the lower end of the meter type length measuring tool props against the contact head (33);
the inner end surface of the measuring head (15) is designed to be an arc surface, and when the measuring rod (3) rotates around the hinged position, the inner end surface of the measuring head (15) can always abut against the outer end surface of the small end of the step; and when the straight rod part (31) is in a horizontal state, the hinged part is positioned at the midpoint of a horizontal projection connecting line between the innermost side of the measuring head (15) and the measuring head at the lower end of the watch-type length measuring tool (10).
2. The shaft part end face step width measuring device according to claim 1, characterized in that: further comprises a first spring (4) and a second spring (14);
the first spring (4) and the second spring (14) are arranged in the V-shaped support (1), the lower ends of the first spring and the second spring are respectively supported on the upper surfaces of the left side and the right side of a hinge point in the middle of the straight rod part (31), and the first spring and the second spring are used for driving the measuring rod (3) to keep balance in a normal state and do not rotate around the hinge point.
3. The shaft part end face step width measuring device according to claim 2, characterized in that: a set screw mounting hole (11) and a plug mounting hole (13) are formed in the upper part of the V-shaped support (1); the first spring (4) and the second spring (14) are respectively arranged at the lower parts of the set screw mounting hole (11) and the plug mounting hole (13); the upper parts of the set screw mounting hole (11) and the plug mounting hole (13) are respectively in threaded connection with a slotted long cylindrical end set screw (5) and a plug (12) and are used for respectively pressing against the upper surfaces of the first spring (4) and the second spring (14).
4. The shaft part end face step width measuring device according to claim 3, characterized in that: the gauge-type length measuring tool (10) is a dial gauge.
5. The shaft part end face step width measuring device according to claim 4, characterized in that: and the fixing rod in the middle of the dial indicator is detachably inserted into a chuck positioning hole (6) preset in the V-shaped support (1).
6. The shaft part end face step width measuring device according to claim 5, characterized in that: the baffle (16) is mounted on the end face of the wing plate (100) through a hexagon socket head cap screw (17) and is used for dismounting the baffle (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222145707.4U CN217845000U (en) | 2022-08-16 | 2022-08-16 | Device for measuring width of step on end face of shaft part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222145707.4U CN217845000U (en) | 2022-08-16 | 2022-08-16 | Device for measuring width of step on end face of shaft part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217845000U true CN217845000U (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222145707.4U Active CN217845000U (en) | 2022-08-16 | 2022-08-16 | Device for measuring width of step on end face of shaft part |
Country Status (1)
| Country | Link |
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| CN (1) | CN217845000U (en) |
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2022
- 2022-08-16 CN CN202222145707.4U patent/CN217845000U/en active Active
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