CN212653090U - Cutter fixing device on rocker drill - Google Patents
Cutter fixing device on rocker drill Download PDFInfo
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- CN212653090U CN212653090U CN202020636591.2U CN202020636591U CN212653090U CN 212653090 U CN212653090 U CN 212653090U CN 202020636591 U CN202020636591 U CN 202020636591U CN 212653090 U CN212653090 U CN 212653090U
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- steel ball
- clamping sleeve
- main shaft
- cutter
- fixing device
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Abstract
The utility model discloses a cutter fixing device on a radial drill.A cutter bar is fixedly embedded on a main shaft of the radial drill, a cutter is sleeved at the end of the cutter bar, a clamping sleeve is sleeved on the main shaft, and the inner surface of the clamping sleeve is clamped on the step surface of the cutter bar; a slotted hole is formed in the clamping sleeve and used for accommodating the locking mechanism; the locking mechanism comprises a steel ball; a steel ball groove is arranged on the radial outer side of the main shaft and is used for partially accommodating steel balls; the clamping sleeve is connected with the main shaft through steel balls. The utility model discloses a set up the steel ball and connect between clamping sleeve and main shaft, restricted clamping sleeve along the downward motion of axial, can prevent clamping sleeve axial motion. The axial fixation of the cutter is more compact and accurate.
Description
Technical Field
The utility model relates to a rocking arm bores the equipment field, concretely relates to cutter fixing device on rocking arm bores.
Background
In the machining process of mechanical parts, a rocker drill is generally used. The spindle of a radial drill is usually connected directly to the tool or through a universal bit holder to connect various tools, and then the spindle is connected directly to the bit holder to make an indirect connection to the tool.
For a specific cutter, particularly for machining of castings and forgings, the back surface of a screw hole of the connecting end face flange often needs a spot facing plane. The back side counter bore needs to be processed after the bolt hole is processed in the previous process, however, due to the limitation of space position, the counter bore cannot be processed from the front side by using a common cutter, and the counter bore can only be processed from the back side.
In general, when back reaming is carried out, after a cutter is installed from the back, the cutter and a cutter rod are specially fixed by bolts on the side surface or the end surface of the cutter so as to bear axial force and circumferential force, and the use is expensive and laborious.
In the prior art, as shown in fig. 1, the application date is 2010, 4 months and 16 days, and the publication number of the granted publication is CN201659315U, in the chinese utility model patent "a bolt hole counter bore cutter device", the following technical scheme is adopted: the utility model provides a bolt hole counter bore anti-countersink tool device, has radial drill, and fixed the embedding has cutter arbor 2 on radial drill's the main shaft 1, and the end department cover of cutter arbor 2 has cutter 3, and the cover has clamping sleeve 4 on the main shaft 1, and clamping sleeve 4's internal surface card is on the step face of cutter arbor 2. Wherein, two hexagon socket head cap screws on the clamping sleeve 4 are used for compressing tightly, and the inner hole of the clamping sleeve 4 is deformed to compress the circumferential surface of the main shaft 1, so that the fixing can be reliable.
The prior art has the disadvantage that the clamping sleeve 4 is circumferentially provided with an opening before use, the clamping sleeve is circumferentially fixed with the main shaft by bolts, and the clamping sleeve 4 cannot be accurately ensured not to fall down in the axial direction.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a make the cutter fixing device on 4 axial position of clamp sleeve more stable rocking arm bores.
In order to achieve the above object, the present invention provides the following technical solutions:
a cutter fixing device on a radial drill is characterized in that a cutter bar is fixedly embedded on a main shaft of the radial drill, a cutter is fixedly connected to the end of the cutter bar, a clamping sleeve is sleeved on the main shaft, and the inner surface of the clamping sleeve is clamped on the step surface of the cutter bar;
a slotted hole is formed in the clamping sleeve and used for accommodating the locking mechanism;
the locking mechanism comprises a steel ball;
a steel ball groove is arranged on the radial outer side of the main shaft and is used for partially accommodating steel balls;
the clamping sleeve is connected with the main shaft through steel balls.
Furthermore, the tail end of the locking mechanism comprises an inclined plate with an inclined surface; the steel balls can be driven to leave or enter the steel ball grooves by the up-and-down motion of the inclined plate.
Furthermore, the locking mechanism comprises a screw, a top plate, a spring, an inclined plate and a steel ball from top to bottom;
after the screw is connected through the thread and penetrates through the clamping sleeve, the lower end of the screw is connected with the upper surface of the top plate;
a spring is abutted between the lower surface of the top plate and the upper surface of the inclined plate;
the screw positions are different, and the inclined plane can be driven to move up and down.
Furthermore, a plurality of locking mechanisms are uniformly distributed in the circumferential direction of the clamping sleeve, and each inclined plane is in contact with one steel ball.
Furthermore, the bottom of the slotted hole is provided with an arc-shaped surface for containing the steel ball, and one end of the arc-shaped surface is tangent to the lower end of the steel ball slot.
Furthermore, the steel ball is fixedly connected with the clamping sleeve through a second spring.
Furthermore, the inclined plane is provided with a magnetic layer.
In the technical scheme, the utility model provides a cutter fixing device on rocking arm bores connects through setting up the steel ball between clamping sleeve and main shaft, has carried out the restriction to clamping sleeve along the downward motion of axial, can prevent clamping sleeve axial motion. The axial fixation of the cutter is more compact and accurate.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
FIG. 1 is a schematic diagram of a prior art structure;
fig. 2 is a schematic structural view of the cutter fixing device disclosed by the present invention;
fig. 3 is an initial structural schematic diagram of the tool fixing device disclosed by the present invention;
fig. 4 is a schematic top view of fig. 2.
Description of reference numerals:
1. a main shaft; 2. a cutter bar; 3. a cutter; 4. a clamping sleeve; 10. a steel bead groove; 40. a slot; 50. a bevel; 41. steel balls; 51. a screw; 52. a top plate; 53. a spring; 54. a sloping plate; 55. a second spring.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1-4, the embodiment of the present invention provides a tool fixing device for a radial drill, including a spindle 1 of the radial drill, in which a tool bar 2 is fixedly embedded, a tool 3 is fixedly connected to an end of the tool bar 2, a clamping sleeve 4 is sleeved on the spindle 1, and an inner surface of the clamping sleeve 4 is clamped on a step surface of the tool bar 2;
a slotted hole 40 is arranged in the clamping sleeve 4 and used for accommodating the locking mechanism;
the locking mechanism comprises a steel ball 41;
a steel ball groove 10 is arranged on the radial outer side of the main shaft 1 and is used for partially accommodating a steel ball 41;
the clamping sleeve 4 is connected with the main shaft 1 through steel balls 41.
The end of the locking mechanism includes a ramp 54 with a ramp 50; the up and down movement of the sloping plate 54 can drive the steel balls 41 out of or into the steel ball groove 10.
Specifically, the utility model discloses do not change the circumference fixed approach of clamping sleeve among the prior art, compress tightly by two hexagon socket head cap bolts on the clamping sleeve 4, the deformation of 4 holes of clamping sleeve compresses tightly 1 periphery of main shaft for can reliably fix. However, the structure of the contact part of the clamping sleeve 4 and the main shaft 1 is improved, a slotted hole 40 is formed in the clamping sleeve 4, a steel ball groove 10 is formed in the main shaft 1, and steel balls can move between the slotted hole 40 and the steel ball groove 10. When the clamping sleeve 4 is tightly sleeved on the outer side of the main shaft 1, the steel ball 41 is driven by the inclined surface 50 to be partially clamped into the steel ball groove 10 and partially clamped into the lower end of the groove hole 40. The clamping sleeve 4 and the main shaft 1 are axially positioned through steel balls. When the inclined plane 50 moves downwards, the distance from the tangent contact point of the outer side of the steel ball 41 and the inclined plane 50 to the main shaft 1 is smaller and smaller, and the steel ball 41 is driven to move towards the main shaft 1.
The locking mechanism comprises a screw 51, a top plate 52, a spring 53, a sloping plate 54 and a steel ball 41 from top to bottom;
after the screw 51 is connected through threads and penetrates through the clamping sleeve 4, the lower end of the screw 51 is connected with the upper surface of the top plate 52;
a spring 53 is abutted between the lower surface of the top plate 52 and the upper surface of the inclined plate 54;
the screw 51 is positioned differently to move the inclined surface 50 up and down.
Specifically, a top plate 52 is disposed in the slot 40 and can move up and down in the slot 40, and both ends of the spring 53 are fixedly connected to the top plate 52 and an inclined plate 54 with an inclined surface 50. The screw 51 is adjusted to be screwed into the clamping sleeve 4 for a length, when the screw 51 is locked, the top plate 52 can be driven to compress the spring 53, the spring 53 is compressed, and therefore the inclined surface 50 is pushed to move downwards, and the steel ball 41 is pressed towards the main shaft 1. The axial locking between the clamping sleeve 4 and the spindle 1 is completed. If the clamping sleeve 4 moves downwards during the movement of the tool shank 2, the inclined surface 50 moves downwards relative to the spindle and still drives the steel ball 41 to be locked into the steel ball groove 10. When the cutter bar 2 needs to be lowered, the screw 51 is screwed out upwards to drive the top plate 52 and the inclined plate 54 to move upwards, and the steel balls leave the steel ball groove 10.
Preferably, the bottom of the slot 40 is provided with an arc surface, i.e. a section line ab of the arc surface passing through the axis of the spindle 1 in fig. 2, for better accommodating the steel ball 41, and one end of the arc surface, i.e. the point b close to the spindle, is tangent to the lower end and the lower half of the steel ball groove 10. This facilitates the smooth and smooth movement of the steel ball 41 out of the ball groove 10. The arc surface is positioned below the steel ball groove, on the whole, the inclined surface of the inclined surface 50 and the bottom of the groove hole 40 are provided with arc surfaces, and the steel ball groove 10 forms an inclined long hole, and the inclined direction is approximately the same as the inclined surface 50.
The steel ball groove 10 is preferably provided with a whole circle of grooves along the axial direction of the main shaft 1 in an annular mode, the shapes are preferably two shapes shown in fig. 2, one shape is arc-shaped as a whole, and the section position d, preferably d, of the radial inner side of the steel ball groove 10 is smoothly connected with the arc line section ab; or a V-shaped opening with inclined upper and lower surfaces, the section position c, preferably cb, of the radial inner side of the steel ball groove 10 is tangent and smoothly connected with the arc line ab. It should be appreciated by those skilled in the art that the opening of the steel ball groove 10 is slightly larger than the diameter of the steel ball 41 to ensure the smooth entry of the steel ball 41. However, the radial opening distance of the steel ball groove 10 cannot be larger than the diameter of the steel ball 41, so that the steel ball 41 only partially enters the spindle 1.
A plurality of locking mechanisms are uniformly distributed on the circumference of the clamping sleeve 4, and each inclined surface 50 is contacted with one steel ball 41.
Specifically, as shown in fig. 4, each locking mechanism that can be considered by those skilled in the art corresponds to a separate slot 40, and the width of the slot 40 is slightly larger than the width of the steel ball 41; or a slot 40 starting the entire circumference inside the clamping set. The axial cross-section of the slot 40 resembles a rectangle.
The steel ball 41 can be stored separately from the clamping sleeve 4 and only then be inserted into the slotted hole 40 and the steel ball groove 10 when in use, and preferably the steel ball is locked before the inner hole of the clamping sleeve 4 is deformed to press the circumferential surface of the main shaft 1.
The steel ball 41 is fixedly connected with the clamping sleeve 4 through a second spring 55. In particular, in order to ensure that the steel ball 41 is stored without being separated from the clamping sleeve 4, it is conceivable for the person skilled in the art to install a second spring 55 below the steel ball 41. The arc-shaped surface at the bottom of the groove hole 40 is provided with a through hole communicated with the outside of the box clamping sleeve for installing a second spring 55, the second spring 55 is fixedly connected with the outside of the clamping sleeve 4, and the other end of the second spring is fixedly connected with the steel ball 41. When the screw 51 drives the inclined surface 50 upward to separate from the steel ball, the steel ball 41 is pulled by the second spring 55 to return to the initial position contacting with the arc-shaped surface at the bottom of the slot 40. In this case, the inner hole of the clamping sleeve 4 is preferably deformed to press the circumferential surface of the main shaft 1, and then the steel ball 41 is locked.
The ramp 50 is provided with a magnetic layer 501. Specifically, in order to ensure that the steel ball 41 and the clamping sleeve 4 are not required to be separated for storage, the bottom of the inclined surface 50 is provided with magnetic force, the upper part of the steel ball is attracted through the magnetic force, and the lower part of the steel ball is supported by an arc surface formed by a line segment ab.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (7)
1. A cutter fixing device on a radial drill is characterized in that a cutter bar (2) is fixedly embedded on a main shaft (1) of the radial drill, a cutter (3) is fixedly connected to the end of the cutter bar (2), a clamping sleeve (4) is sleeved on the main shaft (1), and the inner surface of the clamping sleeve (4) is clamped on the step surface of the cutter bar (2);
a slotted hole (40) is arranged in the clamping sleeve (4) and is used for accommodating the locking mechanism;
the locking mechanism comprises a steel ball (41);
a steel ball groove (10) is arranged on the radial outer side of the main shaft (1) and is used for partially accommodating a steel ball (41);
the clamping sleeve (4) is connected with the main shaft (1) through a steel ball (41).
2. The tool holder assembly of claim 1 wherein the locking mechanism includes a ramp (54) having a ramp surface (50) at the distal end thereof; the up-and-down motion of the sloping plate (54) can drive the steel balls (41) to leave or enter the steel ball groove (10).
3. The tool fixing device on the rocker drill of claim 2, characterized in that the locking mechanism comprises a screw (51), a top plate (52), a spring (53), a sloping plate (54) and a steel ball (41) from top to bottom;
after the screw (51) is connected through threads and penetrates through the clamping sleeve (4), the lower end of the screw (51) is connected with the upper surface of the top plate (52);
a spring (53) is abutted between the lower surface of the top plate (52) and the upper surface of the inclined plate (54);
the screw (51) can drive the inclined plane (50) to move up and down according to different positions.
4. The tool holder on a rocker drill according to claim 3, characterized in that a plurality of locking means are evenly distributed in the circumferential direction of the clamping sleeve (4), each inclined surface (50) being in contact with one steel ball (41).
5. The cutter fixing device on the rocker drill of claim 4, characterized in that the bottom of the slotted hole (40) is provided with an arc-shaped surface for accommodating the steel ball (41), and one end of the arc-shaped surface is tangent to the lower end of the steel ball groove (10).
6. The cutter fixing device on the rocker drill is characterized in that the steel ball (41) is fixedly connected with the clamping sleeve (4) through a second spring (55).
7. Tool holding device on a radial drill according to claim 5, characterized in that the ramp (50) is provided with a magnetic layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020636591.2U CN212653090U (en) | 2020-04-24 | 2020-04-24 | Cutter fixing device on rocker drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020636591.2U CN212653090U (en) | 2020-04-24 | 2020-04-24 | Cutter fixing device on rocker drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212653090U true CN212653090U (en) | 2021-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020636591.2U Active CN212653090U (en) | 2020-04-24 | 2020-04-24 | Cutter fixing device on rocker drill |
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| Country | Link |
|---|---|
| CN (1) | CN212653090U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113367843A (en) * | 2021-04-27 | 2021-09-10 | 杭州启明医疗器械股份有限公司 | Interventional instrument delivery system |
| CN114273039A (en) * | 2021-12-27 | 2022-04-05 | 浙江威肯特智能机械有限公司 | Self-locking type grinding mechanism of colloid mill |
| WO2022228088A1 (en) * | 2021-04-27 | 2022-11-03 | 杭州启明医疗器械股份有限公司 | Tube locking device |
-
2020
- 2020-04-24 CN CN202020636591.2U patent/CN212653090U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113367843A (en) * | 2021-04-27 | 2021-09-10 | 杭州启明医疗器械股份有限公司 | Interventional instrument delivery system |
| WO2022228088A1 (en) * | 2021-04-27 | 2022-11-03 | 杭州启明医疗器械股份有限公司 | Tube locking device |
| CN113367843B (en) * | 2021-04-27 | 2023-08-15 | 杭州启明医疗器械股份有限公司 | Delivery system for interventional instruments |
| CN114273039A (en) * | 2021-12-27 | 2022-04-05 | 浙江威肯特智能机械有限公司 | Self-locking type grinding mechanism of colloid mill |
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