CN212431970U - Threaded hole end face run-out measuring device - Google Patents
Threaded hole end face run-out measuring device Download PDFInfo
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- CN212431970U CN212431970U CN202021360541.2U CN202021360541U CN212431970U CN 212431970 U CN212431970 U CN 212431970U CN 202021360541 U CN202021360541 U CN 202021360541U CN 212431970 U CN212431970 U CN 212431970U
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- checking fixture
- barrel
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Abstract
The utility model belongs to the technical field of the measuring technique of end face runout and specifically relates to a screw hole end face runout measuring device. The device comprises a detection tool barrel, wherein a vertically through mounting cavity is arranged in the detection tool barrel, a sliding rod capable of moving up and down is arranged in the mounting cavity, and the lower end of the sliding rod extends out of the detection tool barrel and is connected with an end face measuring head; a dial indicator is arranged above the checking fixture cylinder, and the measuring end of the dial indicator extends into the mounting cavity of the checking fixture cylinder and contacts the upper end of the sliding rod; the middle part of the sliding rod is provided with a knob, and the left side and the right side of the checking fixture cylinder are provided with operation grooves for accommodating the knobs to extend out; and the outer surface of the lower part of the checking fixture cylinder is provided with a thread positioning head. The utility model has convenient and fast measurement operation, lower requirement on operators and good adaptability; the accuracy of measuring the end face run-out can be effectively improved, so that the product quality is improved; different threads are adopted for workpieces with different threaded holes, and the application range is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of the measuring technique of end face runout and specifically relates to a screw hole end face runout measuring device.
Background
The common rail technology is a kind of oil supply technology that completely separates the generation of injection pressure and the injection process from each other in a closed loop system consisting of a high pressure oil pump, a pressure sensor, and an ECU. The high-pressure oil rail is used for storing fuel oil, and simultaneously, pressure fluctuation generated by oil supply of the high-pressure pump and oil injection of the oil injector is restrained, so that the pressure stability of the system is ensured. In the process of processing the high-pressure oil rail, a sealing joint needs to be screwed into one end of the high-pressure oil rail so as to ensure the sealing performance of the high-pressure oil rail in use.
In the machining process of the high-pressure oil rail, in order to ensure that the components reach the corresponding performance index after being combined, high requirements are provided for the jumping values of the threaded holes of the high-pressure oil rail and the end faces of the threaded holes. Therefore, after the machining is completed, the runout value of the threaded hole of the high-pressure oil rail and the end face of the threaded hole needs to be measured, and whether the machining requirement is met or not is judged.
In the prior art, the detection of the runout of the threaded hole and the threaded hole end face of the high-pressure oil rail is mainly realized by a three-coordinate detection device. The measuring head of the three-coordinate detecting device is spherical, when the inner hole of the threaded hole is measured, a plurality of measuring points need to be taken, and the thread top or the thread space can be taken due to the error of the thread pitch of the thread, so that inaccurate measurement is easily caused; a columnar measuring head is used for measuring the threaded hole, but the requirement on the clamping precision of the workpiece is high. Meanwhile, the three-coordinate measuring device has high requirement on operators and low detection efficiency, and is not suitable for rapid detection of machining sites of machines.
SUMMERY OF THE UTILITY MODEL
The applicant provides a screw hole end face runout measuring device with a reasonable structure aiming at the defects in the prior art, and can effectively improve the accuracy of end face runout measurement and the detection efficiency and improve the product quality.
The utility model discloses the technical scheme who adopts as follows:
the threaded hole end face run-out measuring device comprises a detecting tool barrel, wherein a vertically-through mounting cavity is formed in the detecting tool barrel, a sliding rod capable of moving up and down is arranged in the mounting cavity, and the lower end of the sliding rod extends out of the detecting tool barrel and is connected with an end face measuring head; a dial indicator is arranged above the checking fixture cylinder, and the measuring end of the dial indicator extends into the mounting cavity of the checking fixture cylinder and contacts the upper end of the sliding rod; the middle part of the sliding rod is provided with a knob, and the left side and the right side of the checking fixture cylinder are provided with operation grooves for accommodating the knobs to extend out; the lower part of the checking fixture barrel is provided with a thread positioning head, and the outer surface of the thread positioning head is provided with threads.
Furthermore, the outer surface of the knob is provided with knurled screw threads.
Further, the thread of the thread positioning head can be a go-gauge thread or a tapered thread or an open thread.
Further, a clamping sleeve is arranged in the checking fixture cylinder mounting cavity and located between the dial indicator and the checking fixture cylinder mounting cavity inner surface, an upper threaded hole is radially formed in the side surface of the checking fixture cylinder, an upper locking bolt is connected in the upper threaded hole through threads, and one end of the upper locking bolt is in pressing contact with the outer surface of the clamping sleeve.
Furthermore, the upper portion and the lower portion in the inspection tool cylinder installation cavity are respectively provided with an upper guide sleeve and a lower guide sleeve, the outer surfaces of the upper guide sleeve and the lower guide sleeve are in interference fit with the inner side wall in the inspection tool cylinder installation cavity, and the inner surfaces of the upper guide sleeve and the lower guide sleeve are in sliding fit with the slide rod.
Furthermore, a spring is sleeved on the sliding rod, the upper end of the spring is contacted with the lower end face of the upper guide sleeve, and the lower end of the spring is contacted with the upper end face of the knob.
Further, a lower threaded hole is formed in the lower portion of the checking fixture barrel along the radial direction, a lower limiting bolt is connected in the lower threaded hole through threads, a circle of limiting sliding groove is formed in the side face of the sliding rod, and the end portion of the lower limiting bolt extends into the limiting sliding groove.
The utility model has the advantages as follows:
the utility model has compact and reasonable structure, convenient operation, convenient and fast measurement operation, lower requirement on operators and good adaptability; the accuracy of measuring the end face run-out can be effectively improved, so that the product quality is improved; different threads are adopted for workpieces with different threaded holes, and the application range is greatly improved.
Drawings
Fig. 1 is a front view half-section view of the utility model.
Fig. 2 is a side view of the present invention.
Fig. 3 is a test state diagram of the present invention.
Wherein: 1. a gauge barrel; 2. a slide bar; 201. a limiting chute; 3. a dial indicator; 4. a clamping sleeve; 5. locking the bolt; 6. a knob; 601. knurling threads; 7. an operation slot; 8. a spring; 9. an upper guide sleeve; 10. a lower limit bolt; 11. a lower guide sleeve; 12. a thread positioning head; 13. an end face measuring head; A. and (5) the workpiece to be tested.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and 2, the utility model discloses mainly including long tubular structure examine a barrel 1, examine the installation cavity that link up from top to bottom in the barrel 1, be equipped with the slide bar 2 that can reciprocate in the installation cavity, slide bar 2 lower extreme stretches out and examines a barrel 1 and connect terminal surface gauge head 13, and terminal surface gauge head 13 adopts high wearability punctiform gauge head. A dial indicator 3 is arranged above the checking fixture barrel 1, and the measuring end of the dial indicator 3 extends into the mounting cavity of the checking fixture barrel 1 and contacts the upper end of the sliding rod 2.
As shown in fig. 1 and 2, the middle part of the sliding rod 2 is provided with a knob 6, the left side and the right side of the detection tool barrel 1 are provided with operation grooves 7 for accommodating the knob 6 to extend out, and the knob 6 is exposed out of the detection tool barrel 1 through the operation grooves 7, so that an operator can rotate the knob 6 conveniently.
As shown in fig. 1 and 2, in order to avoid slippage when the operator turns the knob 6, the outer surface of the knob 6 is provided with knurled screw threads 601.
As shown in figure 1, the lower part of the checking fixture cylinder 1 is provided with a thread positioning head 12, and the thread positioning head 12 and the checking fixture cylinder 1 are integrally formed. The thread positioning head 12 extends into a threaded hole to be measured to realize the positioning of a measuring device and a threaded hole of a measured workpiece, threads are arranged on the outer surface of the thread positioning head 12, the threads of the thread positioning head 12 are determined according to the thread specification of the measured threaded hole, and through gauge threads, taper threads or opening threads can be adopted.
When the end face of the threaded hole of the workpiece A to be measured is measured, the threaded positioning head 12 is screwed into the threaded hole of the workpiece A to be measured, and the end face measuring head 13 contacts the end face at the moment. Then, the end face measuring head 13 at the lower end of the slide rod 2 is driven to rotate through the knob 6, the end face runout value is fed back to the slide rod 2 through the measuring head, and is fed back to the dial indicator 3 through the slide rod 2, and the specific end face runout value is displayed through the dial indicator 3.
As shown in figure 1, in order to realize the stable installation of the dial indicator 3, a clamping sleeve 4 is arranged in the installation cavity of the detection tool cylinder 1, and the clamping sleeve 4 is positioned between the dial indicator 3 and the inner surface of the installation cavity of the detection tool cylinder 1. An upper threaded hole is formed in the side face of the checking fixture barrel 1 in the radial direction, an upper locking bolt 5 is connected in the upper threaded hole through threads, and one end of the upper locking bolt 5 is in pressing contact with the outer surface of the clamping sleeve 4.
As shown in fig. 1, in order to realize the guiding of the sliding rod 2 in the moving process, an upper guide sleeve 9 and a lower guide sleeve 11 are respectively arranged at the upper part and the lower part in the installation cavity of the detection tool cylinder 1, the outer surfaces of the upper guide sleeve 9 and the lower guide sleeve 11 and the inner side wall in the installation cavity of the detection tool cylinder 1 are in interference fit, and the inner surfaces of the upper guide sleeve 9 and the lower guide sleeve 11 and the sliding rod 2 are in sliding fit.
As shown in figure 1, a spring 8 is sleeved on the sliding rod 2, the upper end of the spring 8 is contacted with the lower end surface of the upper guide sleeve 9, and the lower end of the spring 8 is contacted with the upper end surface of the knob 6. Under the action of the spring 8, the end face measuring head 13 at the lower end of the sliding rod 2 can be ensured to be always in pressing contact with the measuring end face.
As shown in fig. 1, a lower threaded hole is radially formed in the lower portion of the checking fixture cylinder 1, a lower limiting bolt 10 is connected in the lower threaded hole through threads, a circle of limiting sliding groove 201 is formed in the side face of the sliding rod 2, and the end portion of the lower limiting bolt 10 extends into the limiting sliding groove 201. The corresponding arrangement of the limiting sliding chute 201 and the lower limiting bolt 10 can limit the up-and-down movement distance of the sliding rod 2.
The utility model discloses a theory of operation is: when the end face of the threaded hole of the workpiece A to be measured is measured, the threaded positioning head 12 is screwed into the threaded hole of the workpiece A to be measured until the threaded positioning head is not screwed, and the threaded hole of the workpiece A to be measured is positioned. At the moment, the end face measuring head 13 contacts the end face, and the end face measuring head 13 always effectively contacts the end face of the threaded hole of the workpiece A to be measured under the action of the spring. Then, the index of the dial indicator 3 is reset, the end face measuring head 13 at the lower end of the slide rod 2 is driven to rotate through the knob 6, the end face runout value is fed back to the slide rod 2 through the measuring head and is fed back to the dial indicator 3 through the slide rod 2, and the specific end face runout value is displayed through the dial indicator 3.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (7)
1. The utility model provides a screw hole endface measuring device that beats, is including examining a barrel (1), its characterized in that: a vertically through mounting cavity is formed in the detection tool barrel (1), a sliding rod (2) capable of moving up and down is arranged in the mounting cavity, and the lower end of the sliding rod (2) extends out of the detection tool barrel (1) and is connected with an end face measuring head (13); a dial indicator (3) is arranged above the checking fixture cylinder (1), and the measuring end of the dial indicator (3) extends into the mounting cavity of the checking fixture cylinder (1) and contacts the upper end of the sliding rod (2); a knob (6) is arranged in the middle of the sliding rod (2), and operation grooves (7) for accommodating the knobs (6) to extend out are formed in the left side and the right side of the detection tool barrel (1); the lower part of the checking fixture barrel (1) is provided with a thread positioning head (12), and the outer surface of the thread positioning head (12) is provided with threads.
2. The threaded bore face runout measuring apparatus of claim 1, wherein: the outer surface of the knob (6) is provided with knurled screw threads (601).
3. The threaded bore face runout measuring apparatus of claim 1, wherein: the thread of the thread positioning head (12) can adopt a through gauge thread or a taper thread or an open thread.
4. The threaded bore face runout measuring apparatus of claim 1, wherein: the tool is characterized in that a clamping sleeve (4) is arranged in the mounting cavity of the tool barrel (1), the clamping sleeve (4) is located between the dial indicator (3) and the inner surface of the mounting cavity of the tool barrel (1), an upper threaded hole is formed in the side surface of the tool barrel (1) along the radial direction, a locking bolt (5) is connected in the upper threaded hole through threads, and one end of the upper locking bolt (5) is in pressing contact with the outer surface of the clamping sleeve (4).
5. The threaded bore face runout measuring apparatus of claim 1, wherein: the upper portion and the lower portion of the mounting cavity of the checking fixture barrel body (1) are respectively provided with an upper guide sleeve (9) and a lower guide sleeve (11), the outer surface of the upper guide sleeve (9), the outer surface of the lower guide sleeve (11) and the inner side wall of the mounting cavity of the checking fixture barrel body (1) are in interference fit, and the inner surface of the upper guide sleeve (9), the inner surface of the lower guide sleeve (11) and the slide rod (2) are in sliding fit.
6. The threaded bore face runout measuring apparatus of claim 1, wherein: the sliding rod (2) is sleeved with a spring (8), the upper end of the spring (8) is in contact with the lower end face of the upper guide sleeve (9), and the lower end of the spring (8) is in contact with the upper end face of the knob (6).
7. The threaded bore face runout measuring apparatus of claim 1, wherein: the lower part of the checking fixture barrel (1) is provided with a lower threaded hole along the radial direction, the lower threaded hole is connected with a lower limiting bolt (10) through threads, a circle of limiting sliding groove (201) is formed in the side face of the sliding rod (2), and the end part of the lower limiting bolt (10) extends into the limiting sliding groove (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021360541.2U CN212431970U (en) | 2020-07-10 | 2020-07-10 | Threaded hole end face run-out measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021360541.2U CN212431970U (en) | 2020-07-10 | 2020-07-10 | Threaded hole end face run-out measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212431970U true CN212431970U (en) | 2021-01-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021360541.2U Active CN212431970U (en) | 2020-07-10 | 2020-07-10 | Threaded hole end face run-out measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212431970U (en) |
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2020
- 2020-07-10 CN CN202021360541.2U patent/CN212431970U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Address after: 214192 east of Qingyun No.1 building, 99 Furong Zhongsan Road, Xishan Economic Development Zone, Wuxi City, Jiangsu Province Patentee after: Wuxi Wannaite Automation Equipment Co.,Ltd. Address before: 214192 east of Qingyun No.1 building, 99 Furong Zhongsan Road, Xishan Economic Development Zone, Wuxi City, Jiangsu Province Patentee before: WUXI VGAGE MEASURING EQUIPMENT Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |