CN215090769U - Clamp for rotary body - Google Patents
Clamp for rotary body Download PDFInfo
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- CN215090769U CN215090769U CN202121155204.4U CN202121155204U CN215090769U CN 215090769 U CN215090769 U CN 215090769U CN 202121155204 U CN202121155204 U CN 202121155204U CN 215090769 U CN215090769 U CN 215090769U
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- jaw
- hydraulic chuck
- jig
- jaws
- rotating body
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Abstract
The application discloses anchor clamps (1) for solid of revolution (2), its characterized in that, anchor clamps (1) include: -a hydraulic chuck (10), -jaws (20) arranged on the hydraulic chuck (10), -a pressure plate (30) arranged above the jaws (20) and at a distance from the jaws (20) and centrally provided with a through hole, -a support block (40) arranged between the jaws (20) and the pressure plate (30) and having an adjustable height, -a fastener (50) one part of which is fixed to the jaws (20) through the through hole and the other part of which is arranged above the through hole to prevent the pressure plate (30) from moving upwards.
Description
Technical Field
The application relates to a clamp, in particular to a clamp for a revolving body.
Background
Generally, in the field of turning, a method of machining a rotary body includes clamping twice with a common three-jaw hydraulic chuck to clamp the rotary body and perform machining. However, when the requirement for the coaxiality of the rotating body is relatively high, the required accuracy cannot be achieved by using a common three-jaw hydraulic chuck.
In addition, under the condition that inner holes at two ends of a revolving body need to be machined, a common machining method is to perform single clamping and adopt an inner hole hooking turning tool to perform reverse hooking machining. Under the condition that the diameter difference of inner holes at two ends of the revolving body is large, the precision requirement of the method for the inner hole hooking turning tool is high. Thus, the processing cost may be significantly increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, it is desirable to develop a fixture, which still adopts a method of twice clamping to process a revolving body, and can achieve high precision that a common three-jaw hydraulic chuck cannot achieve, so as to process a revolving body with high requirement on the coaxiality of outer circles or inner holes at two ends.
The application discloses anchor clamps for solid of revolution, its characterized in that, turning attachment includes: the hydraulic chuck includes a hydraulic chuck, a jaw provided on the hydraulic chuck, a pressure plate provided above and spaced apart from the jaw and centrally provided with a through-hole, a support block provided between the jaw and the pressure plate and having an adjustable height, and a fastener, a portion of which is fixed to the jaw through the through-hole and another portion of which is provided above the through-hole to prevent the pressure plate from moving upward.
According to an alternative embodiment, the hydraulic chuck has a cylindrical shape, the bottom center of which is provided with a fixing groove for fixing to and rotating together with a rotating shaft of the rotary actuator.
According to an alternative embodiment, the upper part of the hydraulic chuck is provided with two or more jaw abutments.
According to an alternative embodiment, the jaw abutments are partially embedded in the hydraulic chuck and are uniformly distributed along the circumference of the hydraulic chuck.
According to an alternative embodiment, the top of the jaw support is provided with a positioning groove.
According to an alternative embodiment, the jaws are arranged on top of the jaw support and are fixed to the jaw support.
According to an alternative embodiment, the hydraulic chuck includes a relaxed position in which the jaw carrier is free to translate in a radial direction of the hydraulic chuck to accommodate the size of the body of revolution to be clamped, and a clamped position in which the jaw carrier is moved inwardly in the radial direction of the hydraulic chuck to cause the jaws fixed to the jaw carrier to abut the body of revolution to limit circumferential and radial movement of the body of revolution.
According to an alternative embodiment, the hydraulic chuck comprises three said jaw supports.
According to an alternative embodiment, the bottom of the jaws is provided with a toothed structure cooperating with the positioning groove for blocking the relative movement of the jaws and the jaw support in the radial direction of the hydraulic chuck.
According to an optional embodiment, the jaw comprises a jaw positioning surface disposed at a position of a top of the jaw near an inner end, and a jaw positioning wall circumferentially disposed at an upper position of the inner end of the jaw.
By means of the clamp, the revolving body can be machined by a twice clamping method, and the high precision which cannot be achieved by a common three-jaw hydraulic chuck can be achieved, so that the revolving body with high requirement on the coaxiality of the outer circles or the inner holes at the two ends can be machined.
Drawings
The foregoing and other aspects of the present application will be more fully understood from the following detailed description, taken together with the following drawings. It is noted that the drawings may not be to scale for clarity of illustration and will not detract from the understanding of the present application.
Figure 1 is a top view of a clamp according to the present application,
figure 2 is a cross-sectional view of the clamp of figure 1 taken along line a-a,
figure 3 is a top view of the clamp of figure 1 in a clamped condition,
fig. 4 is a cross-sectional view of the clip of fig. 3 taken along line C-C.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
FIG. 1 is a top view of a lathe fixture according to the present application. In this figure, the definition of the relative direction is as follows: "up" refers to the direction perpendicular to the plane of the drawing toward the viewer, and "down" refers to the direction perpendicular to the plane of the drawing away from the viewer. The clamp 1 includes a hydraulic chuck 10, jaws 20, a pressure plate 30, a support block 40, and fasteners 50. The hydraulic chuck 10 is cylindrical and has a fixing groove 100 provided at the center of the bottom thereof to be fixed to a rotating shaft of a rotary actuator (e.g., a lathe) and to rotate together therewith. The upper portion of the hydraulic chuck 10 is provided with two or more jaw holders 110. The jaw supports 110 are partially embedded in the hydraulic chuck 10 and are uniformly distributed along the circumference of the hydraulic chuck 10. The jaws 20 are disposed on the hydraulic chuck 10, specifically, on top of the jaw support 110 of the hydraulic chuck 10 and fixed to the jaw support 110. The hydraulic chuck 10 includes a relaxed position and a clamped position. In the relaxed position, the jaw carrier 110 is free to translate in the radial direction of the hydraulic chuck to accommodate the size of the body of revolution 2 (shown in figure 3) to be clamped. In the clamping position, the jaw supporter 110 is moved inward in the radial direction of the hydraulic chuck 10 by a hydraulic actuator (not shown) so that the jaws 20 fixed to the jaw supporter 110 abut the rotary body 2 to restrict circumferential and radial movement of the rotary body 2. The pressure plate 30 is disposed above the jaws 20 and spaced apart from the jaws 20.
In the present embodiment, the hydraulic chuck 10 includes three jaw mounts 110, and may also be referred to as a three-jaw hydraulic chuck. However, the hydraulic chuck 10 may have other number of the jaw support 110, for example, two or four, depending on the shape and structure of the rotary body 2 to be machined. Such a hydraulic chuck 10 is referred to as a two-jaw hydraulic chuck or a four-jaw hydraulic chuck. In the following, a description is given on the basis of a three-jaw hydraulic chuck.
Fig. 2 is a cross-sectional view of the clip of fig. 1 taken along line a-a. Hereinafter, the end of the jaws 20 close to the center of the hydraulic chuck 10 is referred to as an inner end, and the end of the jaws 20 far from the center of the hydraulic chuck 10 is referred to as an outer end. The top of the jaw supporter 110 is provided with a positioning groove 120. The bottom of the jaws 20 is provided with a tooth structure 200 engaged with the positioning groove 120 of the jaw support 110 to prevent the jaws 20 and the jaw support 110 from relatively moving in a radial direction of the hydraulic chuck 10. The pawl 20 includes a pawl locating surface 210 and a pawl locating wall 220. A pawl locating surface 210 is provided at the top of the pawl 20 near the inboard end. The claw positioning wall 220 is circumferentially provided at an upper position of the inner side end of the claw 20. The jaw positioning surface 210 and the jaw positioning wall 220 are surfaces formed by turning. The pressure plate 30 is provided with a through hole at the center. A part of the fastener 50 is fixed to the jaw 20 through the through-hole and another part is disposed above the through-hole to prevent the pressing plate 30 from moving upward. The supporting block 40 is disposed between the jaws 20 and the pressure plate 30, and has an adjustable height.
Fig. 3 is a top view of the clamp of fig. 1 in a clamped state. In the clamped state, the rotator 2 is disposed between the jaws 20, and the rotation axis thereof coincides with the rotation axis of the hydraulic chuck 10.
Fig. 4 is a cross-sectional view of the clip of fig. 3 taken along line B-B. The rotator 2 includes a workpiece positioning surface 201 perpendicular to the rotation axis of the rotator 2 and a workpiece positioning wall 202 provided along the circumferential direction of the rotator 2. In the clamped position, the workpiece positioning surface 201 abuts the jaw positioning surface 210, and the workpiece positioning wall 202 optionally abuts the jaw positioning wall 220.
The method of using the clamp 1 comprises the following steps.
In step S101, the jaws 20 are fixed to the hydraulic chuck 10.
Step S102, turning the chuck 20, specifically, turning the chuck positioning surface 210 and the chuck positioning wall 220, so that the flatness of the chuck positioning surface 210 is less than a given upper limit (for example, 0.01 mm).
In step S103, the pressing plate 30 is mounted on the jaws 20.
Step S104, the rotary body 2 to be machined is set on the hydraulic chuck 10, and the hydraulic chuck 10 is placed in the clamping position such that the work positioning surface 201 abuts the jaw positioning surface 210, and the work positioning wall 202 optionally abuts the jaw positioning wall 220.
In step S105, one end of the pressure plate 30 is pressed against the rotator 2, and the other end is pressed against the support block 40.
In step S106, the height of the supporting block 40 is adjusted so that the line connecting both ends of the pressing plate 30 is parallel to the jaw positioning surface 210.
And S107, measuring the excircle and the end face of the revolving body 2 by using a lever and a dial indicator, and if the runout is smaller than the upper limit (for example, 0.01mm), determining that the revolving body is qualified, and performing subsequent turning.
The foregoing description of the embodiments has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the embodiments to the precise form disclosed. Many modifications and variations will be apparent to practitioners skilled in the art. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to understand the embodiments for various embodiments and with various modifications as are suited to the particular use contemplated. Within the framework of embodiments, the components and features described above can be combined between the different embodiments described.
Claims (10)
1. A clamp (1) for a body of revolution (2), said clamp (1) comprising:
a hydraulic chuck (10),
jaws (20) arranged on the hydraulic chuck (10),
a pressure plate (30) disposed above the jaws (20) and spaced apart from the jaws (20) and centrally provided with a through hole,
a support block (40) disposed between the jaws (20) and the pressure plate (30) and having an adjustable height,
a fastener (50) having a portion fixed to the jaw (20) through the through hole and another portion disposed above the through hole to prevent the pressing plate (30) from moving upward.
2. The jig (1) for a rotating body (2) according to claim 1,
the hydraulic chuck (10) has a cylindrical shape, and a bottom center thereof is provided with a fixing groove (100) for fixing to and rotating together with a rotating shaft of a rotary actuator.
3. The jig (1) for a rotating body (2) according to claim 1,
the upper portion of the hydraulic chuck (10) is provided with two or more jaw holders (110).
4. The jig (1) for a rotating body (2) according to claim 3,
the jaw supports (110) are partially embedded in the hydraulic chuck (10) and are uniformly distributed in the circumferential direction of the hydraulic chuck (10).
5. The jig (1) for a rotating body (2) according to claim 3,
the top of the jaw support (110) is provided with a positioning groove (120).
6. The jig (1) for a rotating body (2) according to claim 3,
the jaw (20) is disposed on top of the jaw support (110) and fixed to the jaw support (110).
7. The jig (1) for a rotating body (2) according to claim 3,
the hydraulic chuck (10) comprises a relaxed position in which the jaw support (110) is free to translate in the radial direction of the hydraulic chuck to accommodate the size of the body of revolution (2) to be gripped, and a clamped position in which the jaw support (110) is moved inwards in the radial direction of the hydraulic chuck (10) so that the jaws (20) fixed to the jaw support (110) abut the body of revolution (2) to limit circumferential and radial movement of the body of revolution (2).
8. The jig (1) for a rotating body (2) according to claim 3,
the hydraulic chuck (10) includes three jaw supports (110).
9. The jig (1) for a rotating body (2) according to claim 5,
the bottom of the jaw (20) is provided with a tooth structure (200) which is matched with the positioning groove (120) and is used for preventing the jaw (20) and the jaw support (110) from moving relatively along the radial direction of the hydraulic chuck (10).
10. The jig (1) for a rotating body (2) according to claim 1,
the jack catch (20) includes jack catch locating surface (210) and jack catch location wall (220), jack catch locating surface (210) set up the position department that is close to the medial extremity of the top of jack catch (20), jack catch location wall (220) set up along circumference the medial extremity of jack catch (20) leans on last position department.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121155204.4U CN215090769U (en) | 2021-05-24 | 2021-05-24 | Clamp for rotary body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121155204.4U CN215090769U (en) | 2021-05-24 | 2021-05-24 | Clamp for rotary body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215090769U true CN215090769U (en) | 2021-12-10 |
Family
ID=79300011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121155204.4U Active CN215090769U (en) | 2021-05-24 | 2021-05-24 | Clamp for rotary body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215090769U (en) |
-
2021
- 2021-05-24 CN CN202121155204.4U patent/CN215090769U/en active Active
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