CN213916186U - Hole locating surface machining device - Google Patents
Hole locating surface machining device Download PDFInfo
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- CN213916186U CN213916186U CN202022089771.6U CN202022089771U CN213916186U CN 213916186 U CN213916186 U CN 213916186U CN 202022089771 U CN202022089771 U CN 202022089771U CN 213916186 U CN213916186 U CN 213916186U
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- measuring
- inner hole
- hole
- locating surface
- pad
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Abstract
The utility model belongs to the technical field of auxiliary hole processing devices, and particularly relates to a hole positioning surface processing device, which comprises an inner hole pad, wherein one end of the inner hole pad is used for being connected with a processed workpiece; the outer side surface of the inner hole pad is used as a contact surface for contacting with the drilling tool and limiting the movement of the drilling tool to play a role in processing and positioning. When the drilling tool is used, the inner hole cushion tool is connected with a processed workpiece, then the drilling tool is used for drilling, after the lower surface of the drilling tool is contacted with the outer side surface of the inner hole cushion tool, the depth of required drilling is achieved, at the moment, the outer side surface of the inner hole cushion tool can limit the drilling tool to move, and the positioning effect is achieved. So that the convenience of operation and reliability can be improved.
Description
Technical Field
The utility model belongs to the technical field of spot facing work auxiliary device, concretely relates to hole locating surface processingequipment.
Background
In order to ensure the safety of the whole supercharger, the rotor is required to work within a certain rotating speed range. The magnetoelectric tachometer sensor is popular among many supercharger manufacturers because of its strong anti-interference performance. The sensor has the characteristics of non-contact indirect measurement, and the acquisition of the rotating speed signal can be realized only when the distance from the measuring head to the measured rotor is kept within a certain range. The bearing body is used as a bearing piece of the speed measuring sensor and is inevitably provided with an installation positioning surface. The correct position of the positioning surface directly determines the working reliability of the speed measuring sensor.
When the positioning surface is manually machined by a radial drilling machine, the machining reference is the central line of the central hole 30 of the bearing body, the central line is a virtual element and is inconvenient to measure, the feed depth of a cutter cannot be controlled, and the position size of the cutter on the bearing body cannot be guaranteed. Secondly, due to the interference phenomenon, the measurement cannot be directly performed by using a general measuring tool. The traditional measurement method is as follows: after the rotating shaft, the small shafting part and the speed measuring sensor are assembled to the bearing body, a clearance between a measuring head of the speed measuring sensor and the outer circle of the rotor is detected by using a feeler gauge. The method has the following defects: the positioning surface is not separately detected, and once a measuring result is found to be unqualified, all parts need to be dismounted again, so that the method is time-consuming, labor-consuming and low in efficiency.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a hole locating surface processingequipment, this processingequipment can play the positioning action, improves the processing reliability.
In order to solve the technical problem, the utility model discloses a technical scheme be:
a hole positioning surface processing device comprises an inner hole cushion tool, wherein one end of the inner hole cushion tool is used for being connected with a processed workpiece; the outer side surface of the inner hole pad is used as a contact surface for contacting with the drilling tool and limiting the movement of the drilling tool to play a role in processing and positioning.
The inner hole pad is of a tubular structure.
And one end of the inner hole pad, which is used for being connected with the processed workpiece, is provided with a counterweight structure.
The counterweight structure is a circle of boss arranged in the inner hole pad.
The inner hole pad is inserted with the processed workpiece.
The inner hole cushion is made of a material with the hardness of 58-64 HRC.
The device also comprises a measuring mandrel and a measuring piece, wherein one end of the measuring mandrel is an assembling end and is used for being connected with a processed workpiece; the other end of the measuring core shaft is a measuring end and can be matched with a measuring piece.
The measuring piece is a measuring bolt.
The measuring mandrel is a hollow stepped shaft.
The assembling end of the measuring mandrel is a conical shaft.
Compared with the prior art, the utility model, the beneficial effect who has is:
during the use with hole pad utensil with by processing the work piece be connected, then punch through the drilling tool, after the lower surface of drilling tool and the lateral surface contact of hole pad utensil, reach the degree of depth of required drilling promptly, the lateral surface of hole pad utensil can restrict the drilling tool and remove this moment, plays the effect of location to can improve the convenient degree and the reliability of operation.
The inner hole pad is used for being provided with a counterweight structure at one end connected with a processed workpiece, so that the gravity center of the inner hole pad can fall on the cylindrical surface of the central hole of the processed workpiece, and the inner hole pad is prevented from inclining or even falling off due to the self gravity and the contact pressure of a drilling tool (countersink) during processing.
Drawings
Fig. 1 is a schematic view of the usage state of the present invention;
FIG. 2 is a schematic structural diagram of a workpiece to be machined according to the present invention;
fig. 3 is a schematic structural diagram of the measuring mandrel of the present invention;
FIG. 4 is a schematic structural diagram of the measuring bolt of the present invention;
fig. 5 is a schematic view of the measuring state of the present invention;
wherein: 1 is the hole pad utensil, 10 is the counter weight structure, 11 is the lateral surface, 2 is the countersink, 3 is the work piece of being processed, 30 is the centre bore, 31 is the hole locating surface, 4 is the measurement dabber, 40 is the assembly end, 41 is the measuring end, 5 is the measuring bolt.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, a hole positioning surface processing device comprises an inner hole pad 1, wherein one end of the inner hole pad 1 is used for being connected with a processed workpiece 3; the outer side surface 11 of the inner hole pad 1 is used as a contact surface for contacting with a drilling tool and limiting the movement of the drilling tool to play a role in processing and positioning.
Taking a bearing body which is one of important parts of the supercharger as a workpiece 3 to be processed as an example:
when the bearing is used, the inner hole pad 1 is arranged in the bearing body and is matched with the central hole 30 of the bearing body for positioning, and clamping is not needed. If the installation is difficult, the end face of the inner hole pad 1 can be lightly knocked by a copper rod. After the bearing is installed, the bearing rotates left and right to ensure that the inner hole pad 1 is not inclined and jammed, and then the bearing body is installed on a rocker arm drilling machine. The countersink drill 2 (drilling tool) is arranged in a radial drilling machine, the machine tool is started, the countersink drill 2 feeds downwards, when the plane of the bottom of a guide column of the countersink drill contacts the outer circle of the inner hole pad tool 1, the main shaft of the machine tool stops rotating, the cutter stops feeding, and the hole positioning surface 31 is machined.
The position size of the hole positioning surface 31 is determined by the length of the countersink guide post, the diameter of the excircle of the inner hole pad 1 and the fit clearance between the inner hole pad 1 and the bearing body center hole 30. Through the calculation of size chain, the diameter deviation of the excircle of the inner hole pad 1 and the length deviation of the countersink guide post are reasonably distributed, and the machined hole positioning surface 31 is strictly ensured to be within the range of size requirements.
Further, the shape of the inner hole pad 1 is a tubular structure; of course, other shapes may be used depending on the actual situation.
Further, one end of the inner hole pad 1, which is used for being connected with the processed workpiece 3, is provided with a counterweight structure 10. Still take the bearing body as an example: after considering that hole pad utensil 1 adorns the bearing body, whole needs the axial level to place the processing, and hole pad utensil 1 left side position promptly the working part is overhanging, because the structure of work piece limits, can't adopt the frock to compress tightly hole pad utensil 1, so in order to prevent that hole pad utensil 1 location is unreliable, drops in the work piece, increases the counter weight design on hole pad utensil 1 right side for its focus falls on the face of cylinder of bearing body hole.
Further, the counterweight structure 10 is a circle of boss arranged in the inner hole pad 1, and the counterweight structure 10 and the inner hole pad 1 can be an integrated structure.
Further, the inner hole pad 1 is inserted with the processed workpiece 3.
Furthermore, the inner hole pad 1 is made of a material with the hardness of 58-64HRC, so that local depressions caused by insufficient hardness of the material under the action of machining pressure can be prevented, and machining precision is prevented from being affected.
The diameter of the excircle of the inner hole pad 1 is calculated through a dimension chain, so that the position dimension of a machined surface is ensured to meet the requirement; the length of the counter bit guide pillar, namely the distance from the bottom plane of the guide pillar to the cutting edge, is obtained through calculation of a size chain, the tolerance is small, and the precision is high.
Further, as shown in fig. 3 to 5, the measuring device further comprises a measuring mandrel 4 and a measuring piece, wherein one end of the measuring mandrel 4 is a mounting end 40 and is used for being connected with the workpiece 3 to be processed; the other end of the measuring mandrel 4 is a measuring end 41 which can be matched with a measuring piece.
In order to better express the central line position element and reduce the measurement error, the assembling end 40 of the measuring mandrel 4 is designed into various specifications with the same basic size and inconsistent upper and lower deviations; the assembling end has multiple specifications of outer diameters with consistent basic sizes and inconsistent deviation, and is used for matching with the central hole, so that the matching clearance is as small as possible, and the measurement error is reduced. And (3) selecting and matching the measuring mandrel 4 according to the actual size of the central hole 30, installing the measuring mandrel 4 into the central hole 30 of the bearing body, and performing clearance matching with the central hole 30. During measurement, a measuring piece is arranged in a processed hole, and then the feeler gauge is plugged to see whether the feeler gauge is qualified or not.
Further, the measuring member is a measuring bolt 5.
When the hole positioning surface 31 is measured, firstly, the bearing body central hole 30 is purged, then, the diameter of the central hole 30 is accurately measured by using an inside micrometer, and the measuring mandrel 4 is selected and matched according to the actual size of the central hole 30. The measuring mandrel 4 is inserted into the bearing body central bore 30 in such a way that it can be mounted with the bore pad 1, which will not be described in detail here. And then screwing the measuring bolt 5 into the threaded hole of the bearing body until the root plane of the measuring bolt 5 is attached to the threaded hole positioning surface 31. And finally, plugging a 0.2mm feeler gauge required in the embodiment into a gap between the outer circle of the measuring end 41 of the measuring mandrel 4 and the bottom of the measuring bolt 5. If the feeler gauge passes, the feeler gauge is unqualified; if the clearance is reserved but the feeler cannot pass through the clearance, the feeler is qualified; if there is no gap, it is rejected, thereby completing an indirect measurement of the hole-locating surface 31 to centerline distance.
The measuring bolt 5 and the measuring mandrel 4 are matched to ensure that the sum of the length of the rod part of the measuring bolt 5 and the outer circle radius of the measuring end 41 of the measuring mandrel 4 is equal to the allowable minimum value of the position dimension D. The feeler gauge is used for detecting whether the gap between the measuring bolt 5 and the measuring mandrel 4 meets the requirement.
The basic thought adopted by the detection method is as follows: in this embodiment, the hole positioning surface 31 has a position size of
The position dimension D of the hole-positioning surface 31 is allowedThe minimum value (i.e., X-0.2) is equal to the value of the outer radius of the measuring end 41 of the measuring spindle 4 plus the length of the shaft of the measuring bolt 5. The thickness of the feeler gauge is chosen to be equal to the tolerance value (i.e. 0.2) of the position dimension D of the positioning surface. If no gap exists between the measuring bolt 5 and the measuring mandrel 4, the actual machining size value is smaller than the minimum value X-0.2; if the clearance is reserved between the two, but the clearance gauge of 0.2mm cannot pass through, the actual machining size value is smaller than the maximum value X and larger than the minimum value X-0.2; if a gap exists between the two and the feeler can pass through the gap, the actual machining size value is larger than the maximum value X. The reception criterion is thus: no gap exists, and the product is unqualified; the clearance is reserved but the feeler gauge cannot pass through the clearance, and the clearance is qualified; and if the clearance is formed and the feeler can pass through, the feeler is unqualified.
Further, the measuring mandrel 4 is a hollow stepped shaft.
Further, the measuring spindle 4 fitting end 40 is a tapered shaft. If no interference exists, the measuring mandrel 4 is preferably a tapered mandrel (i.e., a tapered mandrel) with better centering effect. In this embodiment, because the bearing body center hole 30 interferes with the taper mandrel, the taper mandrel cannot function, so a plurality of specifications of mandrels are selected to match the center hole 30, and the purpose is to minimize the matching gap.
The above description has been made in detail only for the preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art, and all such changes are intended to be encompassed by the present invention.
Claims (10)
1. The utility model provides a hole locating surface processingequipment which characterized in that: the machining tool comprises an inner hole pad (1), wherein one end of the inner hole pad (1) is used for being connected with a machined workpiece (3); the outer side surface (11) of the inner hole pad (1) is used as a contact surface and is used for being in contact with a drilling tool to limit the drilling tool to move so as to play a role in machining and positioning.
2. A hole locating surface machining device as defined in claim 1, wherein: the inner hole pad (1) is of a tubular structure.
3. A hole locating surface machining device as claimed in claim 1 or 2, wherein: one end of the inner hole pad (1) used for being connected with the processed workpiece (3) is provided with a counterweight structure (10).
4. A hole locating surface machining device as claimed in claim 3, wherein: the counterweight structure (10) is a circle of boss arranged in the inner hole pad (1).
5. A hole locating surface machining device as defined in claim 1, wherein: the inner hole pad (1) is inserted with the processed workpiece (3).
6. A hole locating surface machining device as defined in claim 1, wherein: the inner hole pad (1) is made of a material with the hardness of 58-64 HRC.
7. A hole locating surface machining device as defined in claim 1, wherein: the device is characterized by also comprising a measuring mandrel (4) and a measuring piece, wherein one end of the measuring mandrel (4) is an assembling end (40) and is used for being connected with a workpiece (3) to be processed; the other end of the measuring mandrel (4) is a measuring end (41) which can be matched with a measuring piece.
8. A hole locating surface machining device as defined in claim 7, wherein: the measuring part is a measuring bolt (5).
9. A hole locating surface machining device as defined in claim 7, wherein: the measuring mandrel (4) is a hollow stepped shaft.
10. A hole locating surface machining device as defined in claim 7, wherein: the assembling end (40) of the measuring mandrel (4) is a conical shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022089771.6U CN213916186U (en) | 2020-09-22 | 2020-09-22 | Hole locating surface machining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022089771.6U CN213916186U (en) | 2020-09-22 | 2020-09-22 | Hole locating surface machining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213916186U true CN213916186U (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022089771.6U Active CN213916186U (en) | 2020-09-22 | 2020-09-22 | Hole locating surface machining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213916186U (en) |
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2020
- 2020-09-22 CN CN202022089771.6U patent/CN213916186U/en active Active
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