CN214185589U - Unsettled lever cover gear grinding anchor clamps that rise - Google Patents
Unsettled lever cover gear grinding anchor clamps that rise Download PDFInfo
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- CN214185589U CN214185589U CN202023134676.XU CN202023134676U CN214185589U CN 214185589 U CN214185589 U CN 214185589U CN 202023134676 U CN202023134676 U CN 202023134676U CN 214185589 U CN214185589 U CN 214185589U
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- expansion sleeve
- clamp
- gear grinding
- main body
- connecting flange
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Abstract
The utility model discloses a suspension lever type expansion sleeve gear grinding clamp, which comprises a clamp main body, a gear grinding plate and a clamp body, wherein the clamp main body is provided with a stepped hole; the movable center comprises an ejector rod and a connecting flange, the connecting flange is connected with the clamp main body, and the ejector rod penetrates through and extends out of the stepped hole; the equipment center is positioned at the outer end of the clamp main body and is opposite to the movable center; the expansion sleeve is arranged between the clamp main body and the movable center, and the bottom of the expansion sleeve is connected with a connecting nut; the pull rod is connected with a connecting disc on the machine tool; the transmission bolt can penetrate through a connecting hole and a connecting nut on the connecting flange, so that the pull rod is connected with the expansion sleeve, and the expansion sleeve is forced to move and contract in the clamp body through the movement of the pull rod, so that the effect of clamping a workpiece is achieved. This anchor clamps can realize the ascending fixed of axis direction through setting up two top, through using this unsettled lever cover gear grinding anchor clamps that rise, solved the normal operating of anchor clamps and do not take place the problem of interfering in the clearance of less than 5mm between worm gear grinding wheel and work piece.
Description
Technical Field
The utility model relates to an automotive transmission technical field, concretely relates to unsettled lever cover gear grinding anchor clamps that rise.
Background
A gear grinding machine is a metal cutting machine tool for finish machining of gears. The grinding wheel is used as a cutter to grind the machined gear tooth surface to improve the gear precision and surface finish, and the machining method is called as 'gear grinding' and is suitable for finishing the steel gears with higher hardness after quenching.
The process of grinding the teeth of a gear using a gear grinding machine is called gear grinding. The method comprises the steps of grinding internal teeth and external teeth of a cylindrical gear; internal and external tooth grinding of cylindrical helical gears, and grinding of bevel gears.
In the prior art, grinding wheels are used as tools to grind the gear tooth surfaces which are machined, but in the actual production process, as shown in fig. 1, due to the reasons that workpieces are small, standard worm gear grinding wheels are too large (outer diameter 280/275) and the like, when the clamping length of 10mm is kept, a conventional expansion sleeve gear grinding clamp is used, the gap between the grinding wheels and products is only less than 5mm, the grinding wheels are easy to interfere with the clamp, and even the clamping is unstable.
SUMMERY OF THE UTILITY MODEL
For overcoming prior art's defect, the utility model aims to provide a unsettled lever cover gear grinding anchor clamps that rise to avoid anchor clamps and work piece to take place the problem of interfering, realize quick, the stable centre gripping to the work piece.
Therefore, the utility model provides a suspended lever type expansion sleeve gear grinding clamp, which comprises a clamp main body, a clamp main body and a clamp main body, wherein the clamp main body is of a circumferential structure and is provided with a stepped hole; the movable center comprises an ejector rod and a connecting flange, the connecting flange is connected with the clamp main body, and the ejector rod penetrates through and extends out of the stepped hole; the equipment center is positioned at the outer end of the clamp main body and is opposite to the movable center; the expansion sleeve is arranged between the clamp main body and the movable center and is positioned on the upper side of the connecting flange, and the bottom of the expansion sleeve is connected with a connecting nut; the pull rod is arranged on the lower side of the connecting flange and is connected with a connecting disc on a machine tool; the connecting flange is provided with a connecting hole, a transmission bolt can penetrate through the connecting hole and the connecting nut, so that the pull rod is connected with the expansion sleeve, and the expansion sleeve is forced to move and contract in the clamp body through the movement of the pull rod, so that the effect of clamping a workpiece is achieved.
Furthermore, the front end of the stepped hole is provided with a first conical surface, the middle part of the expansion sleeve is provided with a second conical surface, and the first conical surface is matched with the second conical surface.
Furthermore, the outer circumferential surface of the suspended part at the upper part of the expansion sleeve is a conical surface or an arc surface so as to avoid interference with the grinding wheel.
Furthermore, the movable center and the clamp main body are in small clearance fit, so that the coaxiality between the movable center and the clamp main body is improved.
Furthermore, the expansion sleeve is in large clearance fit with the movable center and the expansion sleeve is in large clearance fit with the clamp main body, so that the expansion sleeve can be guaranteed to move up and down easily.
Further, a sleeve is arranged between the transmission bolt and the connecting hole.
Furthermore, the expansion sleeve is provided with a quartering groove or a bisecting groove.
Compared with the prior art, the utility model discloses a unsettled lever cover gerar grinding anchor clamps that rise has following beneficial effect: through setting up two top, can realize the ascending fixed of axis direction, through using this unsettled lever cover gear grinding anchor clamps that rise, solved the normal operating of anchor clamps and do not take place the problem of interfering in the clearance of less than 5mm between worm gear grinding wheel and work piece.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of the suspension lever type expansion sleeve gear grinding clamp of the present invention;
FIG. 2 is a schematic view of the working principle of the expanding sleeve in the suspending lever type expanding sleeve gear grinding clamp of the present invention;
FIG. 3 is a schematic structural view of a movable center in the suspension lever type expansion sleeve gear grinding clamp of the present invention;
fig. 4 is a schematic structural view of a clamp main body in the suspension lever type expansion sleeve gear grinding clamp of the present invention; and
fig. 5 is a schematic structural view of the expanding sleeve in the suspending lever type expanding sleeve gear grinding clamp of the present invention.
Description of the reference numerals
1. A pull rod; 2. a drive bolt; 3. a sleeve; 4. a live center; 5. a connecting nut; 6. a clamp body; 7. expanding sleeves; 8. a workpiece; 9. equipment center; 10. a grinding wheel; 41. a top rod; 42. a connecting flange; 43. connecting holes; 61. a stepped hole; 62. a first conical surface; 71. and a second conical surface.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1-5 illustrate some embodiments according to the present invention.
As shown in fig. 1, a suspension lever type expansion sleeve gear grinding clamp comprises: the clamp comprises a pull rod 1, a transmission bolt 2, a sleeve 3, a live center 4, a connecting nut 5, a clamp body 6 and an expansion sleeve 7. The movable center 4 moves along with the equipment and is matched with the equipment center 9 together to axially fix the workpiece 8, the pull rod 1 drives the expansion sleeve 7 to move in the clamp main body 6 through the transmission bolt 2 and the connecting nut 5, so that the expansion sleeve 7 contracts, and the workpiece is clamped.
Specifically, as shown in fig. 3 and 4, the live center 4 includes a push rod 41 at the front end and a connecting flange 42 at the rear end; the clamp body 6 is of a circumferential structure, and a stepped hole 61 is formed in the middle.
As shown in fig. 1, the ejector pin 41 and the connecting flange 42 of the live center 4 are disposed in the stepped hole 61, the connecting flange 42 is fixedly connected to the jig main body 6, and the ejector pin 41 penetrates through the stepped hole 61 and protrudes out of the stepped hole 61. Wherein, the live center 4 is fixed on a worktable of the machine tool, so that the live center 4 and the clamp main body 6 can rotate along with the worktable.
As shown in fig. 1 and 3, the expansion sleeve 7 is arranged between the clamp main body 6 and the live center 4 and is positioned on the upper side of the connecting flange 42; the connecting nut 5 is positioned between the connecting flange 42 and the stepped hole 61, the pull rod 1 is positioned at the lower side of the connecting flange 42, and the bottom of the expansion sleeve 7 is in threaded connection with the connecting nut 5.
The connecting flange 42 at the bottom of the live center 4 is provided with a connecting hole 43, the transmission bolt 2 penetrates through the sleeve 3 in the connecting hole 43 and then is connected with the connecting nut 5, so that the pull rod 1 and the connecting nut 5 form rigid connection, and meanwhile, the pull rod 1 is connected with a connecting disc on a machine tool to transfer the action of pulling down or loosening up the machine tool; so that the pulling-down and loosening actions of the machine tool can be transmitted to the expansion sleeve 7.
Specifically, as shown in fig. 5 and 4, the front end of the stepped hole 61 on the clamp body 6 has a first conical surface 62, the middle part of the expansion sleeve 7 has a second conical surface 71, and the first conical surface 62 is matched with the second conical surface 71.
As shown in fig. 1 and 2, when the expansion sleeve 7 moves downward by the machine tool pull-down action, the expansion sleeve 7 moves in the clamp body 6, and the middle part and the upper part of the expansion sleeve 7 shrink due to the matching of the first conical surface 62 and the second conical surface 71. At the moment, a lever is formed at three points A, B, C on the expansion sleeve 7, when the power torque is equal to the resistance torque, the lever reaches balance, the upper end of the expansion sleeve 7 is contracted, and the workpiece 8 is clamped.
In order to avoid interference between the expansion sleeve 7 and the grinding wheel, the suspended part at the upper part of the expansion sleeve 7 needs to be designed according to the profile and the running track of the grinding wheel 10, so that the outer circumferential surface of the suspended part at the upper part of the expansion sleeve 7 is a conical surface or an arc surface, and the purpose of avoiding interference between the expansion sleeve 7 and the grinding wheel is achieved.
Specifically, the movable center 4 and the clamp main body 6 are in small clearance fit, and the clearance value is 0.02-0.04, so that the movable center 4 and the clamp main body 6 keep high coaxiality; the expansion sleeve 7 and the movable center 4, and the expansion sleeve 7 and the clamp body 6 are in large clearance fit, so that the expansion sleeve can easily move up and down.
Wherein, in order to guarantee the rigidity, the number of the slots of the expansion sleeve 7 is not easy to be too many, and four equal slots or two equal slots can be opened according to the length of the suspended part of the expansion sleeve and the thickness of the expansion sleeve.
The utility model discloses use this unsettled lever cover gear grinding anchor clamps that rise, realized not enough 5 mm's clearance between worm gear grinding wheel and work piece in the normal operating of anchor clamps and do not take place to interfere, solved the problem that appears in the above-mentioned background.
The utility model discloses a unsettled lever cover gear grinding anchor clamps that rise's working process as follows:
as shown in fig. 1, firstly, a workpiece 8 is loaded on the top of an expansion sleeve 7, and the workpiece 8 is initially positioned under the combined action of the expansion sleeve 7 and a live center 4; then, the equipment center 9 descends to tightly push the workpiece 8, the workpiece 8 is finally positioned in the axial direction under the combined action of the equipment center 9 and the movable center 4, finally, the expansion sleeve 7 descends under the driving of the equipment pull-down action, and the upper end of the expansion sleeve 7 contracts under the action of the clamp main body 6, so that the workpiece is clamped.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a unsettled lever cover gear grinding anchor clamps that rise which characterized in that includes:
the clamp body (6) is of a circumferential structure and is provided with a stepped hole (61);
the movable center (4) comprises a top rod (41) and a connecting flange (42), the connecting flange (42) is connected with the clamp main body (6), and the top rod (41) penetrates through and extends out of the stepped hole (61);
the equipment center (9) is positioned at the outer end of the clamp main body (6) and is opposite to the movable center (4);
the expansion sleeve (7) is arranged between the clamp main body (6) and the movable center (4) and is positioned on the upper side of the connecting flange (42), and the bottom of the expansion sleeve is connected with a connecting nut (5);
the pull rod (1) is arranged on the lower side of the connecting flange (42) and is connected with a connecting disc on a machine tool;
the connecting flange (42) is provided with a connecting hole (43), a transmission bolt (2) can penetrate through the connecting hole (43) and the connecting nut (5), so that the pull rod (1) is connected with the expansion sleeve (7), and the expansion sleeve (7) can be forced to move and contract in the clamp body (6) through the movement of the pull rod (1), so that the effect of clamping a workpiece is achieved.
2. A suspension lever type expansion sleeve gear grinding clamp as claimed in claim 1, wherein the front end of the stepped hole (61) is provided with a first conical surface (62), the middle part of the expansion sleeve (7) is provided with a second conical surface (71), and the first conical surface (62) is matched with the second conical surface (71).
3. A suspension lever type expansion sleeve gear grinding clamp as claimed in claim 1, wherein the outer circumference of the suspension part of the upper part of the expansion sleeve (7) is a conical surface or a circular arc surface to avoid interference with the grinding wheel.
4. A suspension lever type expansion sleeve gear grinding clamp as claimed in claim 1, wherein the live center (4) and the clamp body (6) are in close clearance fit to improve the coaxiality between the live center (4) and the clamp body (6).
5. A suspension lever type expansion sleeve gear grinding clamp as claimed in claim 1, wherein the expansion sleeve (7) and the movable center (4) and the expansion sleeve (7) and the clamp body (6) are in large clearance fit, so as to ensure that the expansion sleeve can move up and down easily.
6. A suspended lever type expansion sleeve gear grinding clamp as claimed in claim 1, wherein a sleeve (3) is arranged between the transmission bolt (2) and the connecting hole (43).
7. A suspended lever type expansion sleeve gear grinding clamp as claimed in claim 1, wherein the expansion sleeve (7) is provided with four or two equal grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023134676.XU CN214185589U (en) | 2020-12-23 | 2020-12-23 | Unsettled lever cover gear grinding anchor clamps that rise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023134676.XU CN214185589U (en) | 2020-12-23 | 2020-12-23 | Unsettled lever cover gear grinding anchor clamps that rise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214185589U true CN214185589U (en) | 2021-09-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023134676.XU Active CN214185589U (en) | 2020-12-23 | 2020-12-23 | Unsettled lever cover gear grinding anchor clamps that rise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214185589U (en) |
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2020
- 2020-12-23 CN CN202023134676.XU patent/CN214185589U/en active Active
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