CN114226801A - Device and method for controlling drilling depth of common horizontal lathe - Google Patents
Device and method for controlling drilling depth of common horizontal lathe Download PDFInfo
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- CN114226801A CN114226801A CN202111578619.7A CN202111578619A CN114226801A CN 114226801 A CN114226801 A CN 114226801A CN 202111578619 A CN202111578619 A CN 202111578619A CN 114226801 A CN114226801 A CN 114226801A
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- screw
- conical sleeve
- hole
- drilling depth
- steel ball
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/02—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for boring deep holes; Trepanning, e.g. of gun or rifle barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B43/00—Boring or drilling devices able to be attached to a machine tool, whether or not replacing an operative portion of the machine tool
- B23B43/02—Boring or drilling devices able to be attached to a machine tool, whether or not replacing an operative portion of the machine tool to the tailstock of a lathe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/048—Devices to regulate the depth of cut
- B23B2260/0482—Depth controls, e.g. depth stops
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a device and a method for controlling the drilling depth of a common horizontal lathe. The control device comprises a screw conical sleeve (1), a steel ball (2), a screw (3) and a standard nut (4); internal threads are formed on two sides of the screw conical sleeve (1) and matched with the screw (3); the middle of the screw conical sleeve (1) is provided with a large through hole and a small through hole which have the same central line, and the large through hole and the small through hole are respectively in clearance fit with the Morse conical sleeve and the taper shank twist drill; one end of the screw (3) is welded and fixed with the steel ball (2), and the other end of the screw is provided with an external thread and is connected with the screw conical sleeve (1); and the standard nut (4) is matched with the screw rod (3) and the screw rod conical sleeve (1) to fix the axial relative displacement of the screw rod (3) and the screw rod conical sleeve (1). The control device disclosed by the invention is simple in structure, strong in practicability, simple to operate, capable of effectively adjusting the drilling depth of the crankshaft, and greatly improving the production efficiency and reducing the rejection rate.
Description
Technical Field
The invention belongs to the technical field of engine crankshaft machining, and particularly relates to a device and a method for controlling the drilling depth of a common horizontal lathe.
Background
The crankshaft is one of the core components of the engine, and the machining process plays a critical role in the quality and performance of the crankshaft. The conventional method is to use a common horizontal lathe for processing, but the processing equipment does not have the function of limiting the drilling depth, but staff perform drilling processing by virtue of personal experience, so that the depth dimension of the hole cannot be effectively ensured, and the consistency of the hole depth is poor. The depth of the hole needs to be measured after drilling, if the hole is drilled shallowly, rework treatment is needed, the processing time is increased, and the production efficiency is reduced; once the hole drill is deep and even drills through the oil hole on the main journal, the whole crankshaft is scrapped.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a device and a method for controlling the drilling depth of a common horizontal lathe. The control device disclosed by the invention is simple in structure, strong in practicability, simple to operate, capable of effectively adjusting the drilling depth of the crankshaft, and greatly improving the production efficiency and reducing the rejection rate.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a control device for the drilling depth of a common horizontal lathe comprises a screw conical sleeve, a steel ball, a screw and a standard nut; internal threads are formed on two sides of the conical sleeve of the screw rod and are matched with the screw rod; the middle of the screw conical sleeve is provided with a large through hole and a small through hole which have the same central line, and the large through hole and the small through hole are respectively in clearance fit with the Morse conical sleeve and the taper shank twist drill; one end of the screw is welded and fixed with the steel ball, and the other end of the screw is provided with an external thread and is connected with the screw conical sleeve; the standard nut is matched with the screw and the screw conical sleeve to fix the axial relative displacement of the screw and the screw conical sleeve.
The axial relative position of the steel ball and the drill bit is set, and the large end face of the crankshaft is taken as the axial positioning reference, so that the drilling depth of the large end hole of the crankshaft can be effectively controlled; when the drill bit or the steel ball is abraded, the drilling depth can be ensured by adjusting the matching among the screw conical sleeve, the screw and the standard nut.
The invention further discloses that the external diameter phi of the internal thread formed on the two sides of the screw conical sleeve is = 6-14 mm. The screw conical sleeve is in threaded fit with the screw, and the axial displacement of the screw relative to the screw conical sleeve is adjusted by rotating.
The invention further discloses that the clearance between the large through hole formed in the middle of the screw conical sleeve and the Morse conical sleeve and the clearance between the small through hole and the taper shank twist drill are both 0.1-1 mm. The aperture of the big and small through holes of the screw conical sleeve can be adjusted according to the outer diameters of the Morse conical sleeve and the taper shank twist drill. The hole clearance is 0.1 ~ 1mm, can guarantee that this device can rotate when receiving the circumference power, and can not take place offset because of the too big relative to morse taper sleeve in clearance.
The invention further discloses that the steel ball is subjected to medium-frequency induction quenching surface heat treatment, so that the surface hardness and the wear resistance of the steel ball are improved, and the hardness is 50-60 HRC. The tool adopts the steel ball to contact with the end face of the big end of the crankshaft, so that the impact, scratch and the like on the end face of the big end can be effectively reduced.
The invention further discloses that the screw is made of high-strength steel so as to avoid bending deformation of the screw when the screw is subjected to larger circumferential force of the crankshaft.
The invention further provides that the thread direction of the standard nut is opposite to the internal thread direction of the screw conical sleeve. The standard nut can fix the axial relative displacement of the screw and the screw conical sleeve, and the relative displacement can be set according to the requirement of the drilling depth.
The invention also provides a control method of the drilling depth of the common horizontal lathe, which uses the control device of the drilling depth of the common horizontal lathe and specifically comprises the following steps:
1) preparing a drill hole; clamping a crankshaft, starting a motor to rotate at a certain rotating speed, selecting a proper taper shank twist drill according to the aperture to be processed of the crankshaft, selecting a Morse taper sleeve of a corresponding model according to the size of the taper shank twist drill, and adapting to a sleeve of a lathe tailstock through the reducing of a plurality of Morse taper sleeves;
2) mounting a tool; selecting a screw conical sleeve with a corresponding aperture according to the taper shank twist drill, screwing a screw into screw holes on two sides of the screw conical sleeve, fixing the relative position of the screw and the screw conical sleeve by using a standard nut according to the drilling depth and the axial relative distance between a steel ball head and the top end of a drill bit, and sleeving a tool on the taper shank twist drill and the Morse taper sleeve;
3) drilling; the taper shank twist drill is controlled to feed to drill through the hand-operated rotary table of the lathe tailstock, when the steel ball head just touches the end face of the large head of the crankshaft, the steel ball drives the tool to do circular motion due to the effect of the circumferential force of the crankshaft, and at the moment, drilling can be stopped, and drilling work is completed.
The invention has the advantages that:
1. the control device disclosed by the invention is simple in structure, strong in practicability, simple to operate, capable of effectively adjusting the drilling depth of the crankshaft, and greatly improving the production efficiency and reducing the rejection rate.
2. The invention can select different taper shank twist drills and Morse taper sleeves according to different apertures, and a special drilling depth control device is manufactured according to the hole depth, so that the drilling depth can be effectively controlled, the risk of drilling the hole and drilling through is reduced, and good economic benefit is obtained for enterprises.
3. The control device of the invention adopts the steel ball to contact with the end surface of the big end of the crankshaft, thereby effectively reducing the impact on the end surface of the big end, such as bruising, scratching and the like.
4. The control device of the invention adopts the standard nut to fix the axial relative displacement of the screw and the screw conical sleeve, and the relative displacement can be set according to the requirement of the drilling depth.
5. The clearance between the large through hole and the small through hole of the screw conical sleeve and the hole of the Morse conical sleeve and the hole of the taper shank twist drill is 0.1-1 mm, so that the device can rotate when being subjected to circumferential force, and the device cannot deviate relative to the Morse conical sleeve due to overlarge clearance.
Drawings
FIG. 1 is a schematic view of the overall structure of the apparatus;
FIG. 2 is a schematic view of the present apparatus;
FIG. 3 is a schematic view of a screw conical sleeve;
fig. 4 is a side view of fig. 3.
FIG. 5 is a schematic view of a screw.
Reference numerals: 1-screw conical sleeve, 2-steel ball, 3-screw, 4-standard nut, 5-lathe, 6-crankshaft, 7-taper shank twist drill, 8-Morse conical sleeve, 9-sleeve, 10-lathe tailstock, 11-hand rotary table.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1:
as shown in figure 2, the control device for the drilling depth of the common horizontal lathe comprises a screw conical sleeve 1, steel balls 2, a screw 3 and a standard nut 4.
As shown in fig. 3 and 4, two sides of the screw conical sleeve 1 are provided with internal threads to be matched with the screw 3; the middle of the screw conical sleeve 1 is provided with a large through hole and a small through hole which have the same central line, and the large through hole and the small through hole are respectively in clearance fit with the Morse conical sleeve and the taper shank twist drill.
As shown in figure 5, one end of the screw rod 3 is welded and fixed with the steel ball 2, and the other end is provided with an external thread and is connected with the screw rod conical sleeve 1.
The standard nut 4 is matched with the screw rod 3 and the screw rod conical sleeve 1, and the axial relative displacement of the screw rod 3 and the screw rod conical sleeve 1 is fixed.
In this embodiment, it is further limited that the external diameter of the internal thread formed on both sides of the screw conical sleeve 1 is phi =6 mm. The clearance between the large through hole formed in the middle of the screw conical sleeve 1 and the Morse conical sleeve and the clearance between the small through hole and the taper shank twist drill are both 0.1 mm.
Example 2:
a control device for the drilling depth of an ordinary horizontal lathe comprises a screw conical sleeve 1, steel balls 2, a screw 3 and a standard nut 4. The two sides of the screw conical sleeve 1 are provided with internal threads which are matched with the screw 3; the middle of the screw conical sleeve 1 is provided with a large through hole and a small through hole which have the same central line, and the large through hole and the small through hole are respectively in clearance fit with the Morse conical sleeve and the taper shank twist drill. One end of the screw rod 3 is welded and fixed with the steel ball 2, and the other end is provided with an external thread and is connected with the screw rod conical sleeve 1. The standard nut 4 is matched with the screw rod 3 and the screw rod conical sleeve 1, and the axial relative displacement of the screw rod 3 and the screw rod conical sleeve 1 is fixed. The steel ball 2 is subjected to medium-frequency induction quenching surface heat treatment, so that the surface hardness and the wear resistance of the steel ball are improved, and the hardness is 50 HRC.
In this embodiment, it is further limited that the external diameter of the internal thread formed on both sides of the screw conical sleeve 1 is phi =14 mm. The clearance between the large through hole formed in the middle of the screw conical sleeve 1 and the Morse conical sleeve and the clearance between the small through hole and the taper shank twist drill are both 1 mm.
Example 3:
a control device for the drilling depth of an ordinary horizontal lathe comprises a screw conical sleeve 1, steel balls 2, a screw 3 and a standard nut 4. The two sides of the screw conical sleeve 1 are provided with internal threads which are matched with the screw 3; the middle of the screw conical sleeve 1 is provided with a large through hole and a small through hole which have the same central line, and the large through hole and the small through hole are respectively in clearance fit with the Morse conical sleeve and the taper shank twist drill. One end of the screw rod 3 is welded and fixed with the steel ball 2, and the other end is provided with an external thread and is connected with the screw rod conical sleeve 1. The standard nut 4 is matched with the screw rod 3 and the screw rod conical sleeve 1, and the axial relative displacement of the screw rod 3 and the screw rod conical sleeve 1 is fixed. The steel ball 2 is subjected to medium-frequency induction quenching surface heat treatment, so that the surface hardness and the wear resistance of the steel ball are improved, and the hardness is 60 HRC. The screw 3 is made of high-strength steel.
In this embodiment, it is further limited that the external diameter of the internal thread formed on both sides of the screw conical sleeve 1 is phi =10 mm. The clearance between the large through hole formed in the middle of the screw conical sleeve 1 and the Morse conical sleeve and the clearance between the small through hole and the taper shank twist drill are both 0.5 mm.
Example 4:
a control device for the drilling depth of an ordinary horizontal lathe comprises a screw conical sleeve 1, steel balls 2, a screw 3 and a standard nut 4. The two sides of the screw conical sleeve 1 are provided with internal threads which are matched with the screw 3; the middle of the screw conical sleeve 1 is provided with a large through hole and a small through hole which have the same central line, and the large through hole and the small through hole are respectively in clearance fit with the Morse conical sleeve and the taper shank twist drill. One end of the screw rod 3 is welded and fixed with the steel ball 2, and the other end is provided with an external thread and is connected with the screw rod conical sleeve 1. The standard nut 4 is matched with the screw rod 3 and the screw rod conical sleeve 1, and the axial relative displacement of the screw rod 3 and the screw rod conical sleeve 1 is fixed. The steel ball 2 is subjected to medium-frequency induction quenching surface heat treatment, so that the surface hardness and the wear resistance of the steel ball are improved, and the hardness is 55 HRC. The screw 3 is made of high-strength steel. The thread direction of the standard nut 4 is opposite to the internal thread direction of the screw conical sleeve 1.
In this embodiment, it is further limited that the external diameter of the internal thread formed on both sides of the screw conical sleeve 1 is phi =8 mm. The clearance between the large through hole formed in the middle of the screw conical sleeve 1 and the Morse conical sleeve and the clearance between the small through hole and the taper shank twist drill are both 0.3 mm.
As shown in fig. 1, the method for controlling the drilling depth of the plain horizontal lathe by using the control device of the above embodiment 1 to embodiment 4 comprises the following steps:
1) preparing a drill hole; clamping a crankshaft, starting a motor to rotate at a certain rotating speed, selecting a taper shank twist drill according to the aperture to be processed of the crankshaft, selecting a Morse taper sleeve of a corresponding model according to the size of the taper shank twist drill, and adapting to a sleeve of a lathe tailstock through reducing of a plurality of Morse taper sleeves;
2) mounting a tool; selecting a screw conical sleeve 1 with a corresponding aperture according to the taper shank twist drill, screwing a screw 3 into screw holes at two sides of the screw conical sleeve 1, fixing the relative position of the screw 3 and the screw conical sleeve 1 by using a standard nut 4 according to the drilling depth and the axial relative distance between a steel ball head and the top end of a drill bit, and sleeving a tool on the taper shank twist drill and a Morse taper sleeve;
3) drilling; the taper shank twist drill is controlled to feed to drill through the hand-operated rotary table of the lathe tailstock, when the steel ball head just touches the end face of the large head of the crankshaft, the steel ball drives the tool to do circular motion due to the effect of the circumferential force of the crankshaft, and at the moment, the drilling can be stopped, and the drilling work is completed.
It should be understood that the above-described embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the practice of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description; this is not necessary, nor exhaustive, of all embodiments; and obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (7)
1. The utility model provides a controlling means of plain horizontal lathe drilling depth which characterized in that: comprises a screw conical sleeve (1), a steel ball (2), a screw (3) and a standard nut (4); internal threads are formed on two sides of the screw conical sleeve (1) and matched with the screw (3); the middle of the screw conical sleeve (1) is provided with a large through hole and a small through hole which have the same central line, and the large through hole and the small through hole are respectively in clearance fit with the Morse conical sleeve and the taper shank twist drill; one end of the screw (3) is welded and fixed with the steel ball (2), and the other end of the screw is provided with an external thread and is connected with the screw conical sleeve (1); and the standard nut (4) is matched with the screw rod (3) and the screw rod conical sleeve (1) to fix the axial relative displacement of the screw rod (3) and the screw rod conical sleeve (1).
2. The apparatus for controlling a drilling depth of a horizontal lathe according to claim 1, wherein: the outer diameter phi of the internal thread formed on the two sides of the screw conical sleeve (1) is = 6-14 mm.
3. The apparatus for controlling a drilling depth of a horizontal lathe according to claim 1, wherein: the clearance between the large through hole formed in the middle of the screw conical sleeve (1) and the Morse conical sleeve and the clearance between the small through hole and the taper shank twist drill are both 0.1-1 mm.
4. The apparatus for controlling a drilling depth of a horizontal lathe according to claim 1, wherein: the steel balls (2) are subjected to medium-frequency induction quenching surface heat treatment, so that the surface hardness and the wear resistance of the steel balls are improved, and the hardness is 50-60 HRC.
5. The apparatus for controlling a drilling depth of a horizontal lathe according to claim 1, wherein: the screw rod (3) is made of high-strength steel.
6. The apparatus for controlling a drilling depth of a horizontal lathe according to claim 1, wherein: the thread direction of the standard nut (4) is opposite to the internal thread direction of the screw conical sleeve (1).
7. A control method for the drilling depth of a common horizontal lathe is characterized by comprising the following steps: the device for controlling the drilling depth of the plain horizontal lathe, according to any one of claims 1 to 6, comprises the following steps:
1) preparing a drill hole; clamping a crankshaft, starting a motor to rotate at a certain rotating speed, selecting a taper shank twist drill according to the aperture to be processed of the crankshaft, selecting a Morse taper sleeve of a corresponding model according to the size of the taper shank twist drill, and adapting to a sleeve of a lathe tailstock through reducing of a plurality of Morse taper sleeves;
2) mounting a tool; selecting a screw conical sleeve (1) with a corresponding aperture according to the taper shank twist drill, screwing a screw (3) into screw holes on two sides of the screw conical sleeve (1), fixing the relative position of the screw (3) and the screw conical sleeve (1) by using a standard nut (4) according to the drilling depth and the axial relative distance between a steel ball head and the top end of a drill bit, and sleeving a tool on the taper shank twist drill and a Morse taper sleeve;
3) drilling; the taper shank twist drill is controlled to feed through the hand-operated rotary table of the lathe tailstock to drill, when the steel ball head just touches the end face of the large head of the crankshaft, the steel ball drives the tool to do circular motion due to the fact that the steel ball (2) is under the action of the circumferential force of the crankshaft, the drilling can be stopped at the moment, and the drilling work is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111578619.7A CN114226801A (en) | 2021-12-22 | 2021-12-22 | Device and method for controlling drilling depth of common horizontal lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111578619.7A CN114226801A (en) | 2021-12-22 | 2021-12-22 | Device and method for controlling drilling depth of common horizontal lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114226801A true CN114226801A (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111578619.7A Pending CN114226801A (en) | 2021-12-22 | 2021-12-22 | Device and method for controlling drilling depth of common horizontal lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114226801A (en) |
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2021
- 2021-12-22 CN CN202111578619.7A patent/CN114226801A/en active Pending
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