Shaft workpiece rotation driving device and superfinishing machine provided with same

Abstract

The utility model relates to the technical field of superfinishing, in particular to a shaft workpiece rotation driving device for a superfinishing machine. In order to improve the superfinishing effect, the shaft workpiece rotation driving device comprises a driving center and a driving pin, the driving center is connected with a driving mechanism, the driving pin is located on the side face of the driving center, and when the driving center abuts against the end of the shaft workpiece, the driving pin is driven by the driving mechanism to rotate. And the driving pin extends into a workpiece pin hole in the end part of the shaft workpiece. When the shaft workpiece rotation driving device is matched with the clamping tail tip to clamp the shaft workpiece, the shaft workpiece can be clamped by the driving center and the driving pin extending into the workpiece pin hole in the end part of the shaft workpiece, so that the shaft workpiece is prevented from generating relative displacement with the driving center and the clamping tail tip in the rotating process; and the superfinishing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of superfinishing, in particular to a shaft workpiece rotation driving device for a superfinishing machine. Background Art

[0002] When superfinishing shaft workpieces, existing superfinishing machines need to use the driving tip and the clamping tail tip to press against the two ends of the shaft workpiece, so as to drive the shaft workpiece to rotate around the central axis of the shaft workpiece. However, if the shaft workpiece is clamped only by the driving tip and the clamping tail tip, when the driving speed of the driving device is too high, the shaft workpiece is prone to relative angular displacement with the driving tip and the clamping tail tip, which affects the superfinishing effect. Utility Model Content

[0003] In order to improve the super finishing effect, the utility model proposes a shaft workpiece rotation driving device, which includes a driving top and a driving pin, wherein the driving top is connected to a driving mechanism, and the driving pin is located on the side of the driving top, and when the driving top presses against the end of the shaft workpiece, the driving pin extends into the workpiece pin hole at the end of the shaft workpiece. When the shaft workpiece rotation driving device of the utility model is used in conjunction with a clamping tail tip to clamp the shaft workpiece, the driving top and the driving pin extending into the workpiece pin hole at the end of the shaft workpiece can be used to clamp the shaft workpiece, thereby avoiding relative displacement of the shaft workpiece with the driving top and the clamping tail tip during rotation, thereby improving the super finishing effect.

[0004] Preferably, the shaft workpiece rotation driving device includes a connecting seat, which includes a fixedly connected base and a connecting column, the base is connected to the driving spindle of the driving mechanism, and the connecting end of the connecting column away from the base is connected to the driving top; the driving top and the driving spindle are colinear, and a driving pin groove for installing the driving pin is provided on the side wall of the driving top. In this way, the driving top is connected to the driving spindle of the driving mechanism through the connecting seat, and the connection is simple and convenient; when the shaft workpiece is driven to rotate by using the shaft attack rotation driving device of the utility model, the driving pin groove on the side wall of the driving top can be used to clamp the driving pin to avoid the driving pin being misaligned due to force, which affects the super-finishing effect. Furthermore, a propulsion groove is provided on the base, in which a connecting rod, a positioning cylinder, an adjustment seat and a propulsion elastic member are provided, the connecting rod is passed through the propulsion groove and is colinearly connected with the connecting end of the driving top in the connecting hole on the connecting column, the positioning cylinder is sleeved on the connecting rod and fixed at the notch of the propulsion groove, the adjustment seat is sleeved on the connecting rod and can slide along the connecting rod between the positioning cylinder and the bottom of the propulsion groove, the propulsion elastic member is sleeved on the connecting rod and located between the positioning cylinder and the adjustment seat; a support sleeve is sleeved on the driving top, the support sleeve includes a fixedly connected connecting ring and a support sleeve sleeve, the connecting ring is connected to the adjustment seat via an adjusting rod passed through an adjusting through hole on the connecting seat, the support sleeve sleeve is close to the top end of the driving top, and the driving pin is installed and fixed on the support sleeve sleeve. In this way, when the shaft workpiece rotation driving device of the utility model is used in conjunction with the clamping tail tip to clamp the shaft workpiece, the advancing elastic member can be used to push the adjustment seat to slide along the connecting rod toward the driving tip, thereby pushing the support sleeve to slide along the driving tip through the adjusting rod, and then the driving pin is extended into the workpiece pin hole at the end of the shaft workpiece. The driving pin in the shaft workpiece rotation driving device of the utility model can be automatically inserted into the workpiece pin hole at the end of the shaft workpiece under the push of the advancing elastic member, and the use is simple and convenient.

[0005] Preferably, the driving pin is mounted on the supporting sleeve by a fixing bolt, the supporting sleeve is provided with a mounting slot, the driving pin is provided with a positioning convex, and the positioning convex is locked in the mounting slot. In this way, a mounting slot is provided on the supporting sleeve in the supporting sleeve to lock the positioning convex on the driving pin, so as to prevent the driving pin from being dislocated due to force, thereby affecting the effect of the driving pin clamping the shaft workpiece.

[0006] Preferably, the adjustment seat is provided with a limiting ring groove for installing the propulsion elastic member, and the notch of the limiting ring groove faces the positioning cylinder. In this way, the limiting ring groove can be used to limit the propulsion elastic member, so as to prevent the propulsion elastic member from moving out of position, thereby affecting the propulsion elastic member pushing the driving pin to be inserted into the workpiece pin hole at the end of the shaft workpiece, thereby affecting the super finishing effect of the shaft workpiece.

[0007] Preferably, a buffer guide seat is sleeved on the connecting rod, and the buffer guide seat is located between the connecting column and the adjusting seat. In this way, the buffer guide seat is arranged between the connecting column and the adjusting seat, which can not only prevent the adjusting seat from hitting the bottom of the pushing groove under the push of the pushing elastic member, but also guide the sliding direction of the adjusting seat by the cooperation of the buffer guide seat and the connecting rod, so as to prevent the adjusting seat from shaking during the sliding process, thereby affecting the clamping effect of the shaft workpiece when the shaft workpiece rotation driving device of the utility model cooperates with the clamping tail tip to clamp the shaft workpiece.

[0008] Preferably, a locking bolt is arranged on the base, and in the locked state, the locking end of the locking bolt presses against the outer wall of the positioning tube. In this way, the positioning tube is locked and fixed in the thrust groove by the locking bolt, and the locking and fixing is simple and convenient.

[0009] Preferably, the shaft workpiece rotation driving device includes a connecting sleeve, an ejection piece, an ejection guide shaft and an ejection elastic piece, wherein the connecting sleeve is sleeved on the connecting column and connected to the adjusting rod; the ejection piece is sleeved on the driving top and connected to the connecting sleeve through the ejection guide shaft, and the ejection piece can slide along the ejection guide shaft; the ejection elastic piece is sleeved on the ejection guide shaft and is located between the connecting sleeve and the ejection piece. In this way, when the clamping tail tip releases the shaft workpiece, the ejection elastic piece pushes the shaft workpiece through the ejection piece, so that the shaft workpiece is separated from the driving top, even if the driving top is ejected from the clamping groove at the end of the shaft workpiece. The utility model shaft workpiece rotation driving device utilizes the ejection elastic piece to push the ejection piece to realize the automatic separation of the shaft workpiece and the driving top, and is simple and convenient to use. Furthermore, the withdrawal member includes a withdrawal disk and a withdrawal ring, the withdrawal disk is connected to the withdrawal guide shaft, the withdrawal ring is sleeved on the support sleeve, and the free end of the withdrawal ring is away from the connection seat; the withdrawal ring is provided with a withdrawal top block, and the distance between the withdrawal top block and the driving top is smaller than the distance between the withdrawal ring and the driving top. In this way, the withdrawal top block is provided on the withdrawal ring of the withdrawal member, so that the shaft workpiece is pushed by the withdrawal top block to separate the shaft workpiece from the driving top. After long-term use and wear, the withdrawal top block can be directly replaced without replacing the withdrawal member, thereby reducing the use and maintenance costs of the shaft workpiece rotation drive device of the utility model.

[0010] In addition, the utility model also proposes a superfinishing machine, which is equipped with any one of the above-mentioned shaft workpiece rotation driving devices. In this way, when the superfinishing machine equipped with the above-mentioned shaft workpiece rotation driving device uses the shaft workpiece rotation driving device and the clamping tail tip to clamp the shaft workpiece, the shaft workpiece is clamped by the driving pin, so as to avoid relative displacement between the shaft workpiece and the driving tip and the clamping tail tip during the rotation process, thereby improving the superfinishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the shaft workpiece rotation driving device of the utility model and the clamping tail tip when clamping the shaft workpiece;

[0012] Figure 2 This is a schematic diagram of the structure of the shaft workpiece rotation drive device of the utility model when clamping the shaft workpiece;

[0013] Figure 3 for Figure 2 AA cross-sectional structure diagram in;

[0014] Figure 4 for Figure 2 BB cross-sectional structure diagram in FIG.

[0015] Figure 5 for Figure 2 The enlarged schematic diagram of the CC cross-sectional structure in FIG.

[0016] Figure 6 for Figure 2 An enlarged schematic diagram of the DD cross-sectional structure. DETAILED DESCRIPTION

[0017] Next, combine Figures 1 to 6 , the shaft workpiece rotation driving device of the utility model is described in detail.

[0018] like Figures 1 to 4 As shown, the shaft workpiece driving device of the utility model includes a driving tip 1, a driving pin 2, a connecting mechanism and an exit mechanism. The driving tip 1 is connected to the driving mechanism (not shown in the figure), the driving pin 2 is located on the side of the driving tip 1, and when the driving tip 1 is against the end of the shaft workpiece 3, the driving pin 2 extends into the workpiece pin hole 31 at the end of the shaft workpiece 3. When the shaft workpiece rotation driving device of the utility model is used in conjunction with the clamping tail tip 4 to clamp the shaft workpiece 3, the driving tip 1 and the driving pin 2 extending into the workpiece pin hole 31 at the end of the shaft workpiece 3 can be used to clamp the shaft workpiece 3, thereby avoiding relative displacement of the shaft workpiece 3 with the driving tip 1 and the clamping tail tip 4 during the rotation process, thereby improving the super finishing effect. Preferably, a driving pin groove 11 for installing the driving pin 2 is provided on the side wall of the driving tip 1. In this way, when the shaft-type workpiece is driven to rotate by using the shaft-type attacking rotation drive device of the utility model, the driving pin groove 11 on the side wall of the driving center 1 can be used to clamp the driving pin 2 to avoid the driving pin 2 being misaligned due to force and affecting the super finishing effect.

[0019] like Figures 1 to 6As shown, the connection mechanism includes a connection seat 5, which includes a fixedly connected base 51 and a connection column 52, the base 51 is connected to the driving spindle of the driving mechanism (not shown in the figure), the connection end of the connection column 52 away from the base 51 is connected to the driving top 1, and the central axis of the connection column 52 coincides with the central axis of the driving top 1, that is, the driving top 1 and the driving spindle are connected in a collinear manner. In this way, the driving top 1 is connected to the driving spindle of the driving mechanism through the connection seat 5, and the connection is simple and convenient. Preferably, the base 51 is provided with a propulsion groove 511, in which a connecting rod 53, a positioning cylinder 54, an adjustment seat 55 and a propulsion elastic member 56 are provided. The connecting rod 53 is inserted into the propulsion groove 511 and is connected in a line with the connecting end of the driving top 1 in the connecting hole 521 on the connecting column 52. The positioning cylinder 54 is sleeved on the connecting rod 53 and fixed at the notch of the propulsion groove 511. The adjustment seat 55 is sleeved on the connecting rod 53 and can be moved along the connecting rod 53 between the positioning cylinder 54 and the propulsion elastic member 56. The driving pin 1 is inserted into the groove 511 and slides between the bottom of the groove 511. The pushing elastic member 56 is sleeved on the connecting rod 53 and is located between the positioning tube 54 and the adjusting seat 55. The driving pin 1 is sleeved with a supporting sleeve, which includes a fixedly connected connecting ring 61 and a supporting sleeve sleeve 62. The connecting ring 51 is connected to the adjusting seat 55 through an adjusting rod 57 passing through an adjusting through hole (not shown in the figure) on the connecting column 52. The supporting sleeve 62 is sleeved close to the top end of the driving pin 1, and the driving pin 2 is fixedly mounted on the supporting sleeve sleeve 62. In this way, when the shaft workpiece rotation driving device of the utility model is used to cooperate with the clamping tail tip 4 to clamp the shaft workpiece 3, the pushing elastic member 56 can be used to push the adjusting seat 55 to slide along the connecting rod 53 toward the driving pin 1, so that the supporting sleeve is pushed to slide along the driving pin 1 through the adjusting rod 57, and then the driving pin 2 is extended into the workpiece pin hole 31 at the end of the shaft workpiece 3. The driving pin 2 in the shaft workpiece rotation driving device of the utility model can be automatically inserted into the workpiece pin hole 31 at the end of the shaft workpiece 3 under the push of the pushing elastic member 56, which is simple and convenient to use. Preferably, a spring is used as the pushing elastic member 56, which is simple and convenient to select. Preferably, at least two adjustment through holes are provided on the connecting column 52, and these adjustment through holes are evenly distributed on the same circumference. In this way, when the connecting seat 5 pushes the support sleeve to slide along the driving top 1 through the adjustment rod 57 inserted in the adjustment through hole, the support sleeve can be ensured to slide smoothly. Preferably, the two ends of the adjustment rod 57 are connected to the adjustment seat 55 and the connecting ring 61 in the support sleeve by bolts, and the connection is simple, convenient and stable. Preferably, a limiting ring groove 551 for installing the pushing elastic member 56 is provided on the adjustment seat 55, and the notch of the limiting ring groove 551 faces the positioning cylinder 54. In this way, the limiting ring groove 551 can be used to limit the pushing elastic member 56 to prevent the pushing elastic member 56 from moving out of position, affecting the pushing elastic member 56 to push the driving pin 2 into the workpiece pin hole 31 at the end of the shaft workpiece 3, thereby affecting the super-finishing effect of the shaft workpiece 3.Preferably, a buffer guide seat 58 is sleeved on the connecting rod 53, and the buffer guide seat 58 is located between the connecting column 52 and the adjustment seat 55. In this way, the buffer guide seat 58 is arranged between the connecting column 52 and the adjustment seat 55, which can not only prevent the adjustment seat 55 from hitting the bottom of the pushing groove 511 under the push of the pushing elastic member 56, but also can guide the sliding direction of the adjustment seat 55 by the cooperation of the buffer guide seat 58 and the connecting rod 53, so as to prevent the adjustment seat 55 from shaking during the sliding process, thereby affecting the clamping effect of the shaft workpiece rotation driving device of the utility model and the clamping tail tip 4 when clamping the shaft workpiece 3. Preferably, the cross section of the buffer guide seat 58 is a "convex"-shaped structure, and a guide groove for installing the buffer guide seat 58 is arranged on the connecting column 52, and the guide groove is connected to the pushing groove and the connecting hole, and the central axis of the guide groove is colinear with the central axis of the pushing groove and the connecting hole. In this way, the end with a smaller outer diameter in the buffer guide seat 58 is inserted into the guide groove, which can improve the sliding stability of the adjustment seat 55 when the buffer guide seat 58 guides the adjustment seat 55 to slide. Preferably, a locking bolt 59 is provided on the base 51, and in the locked state, the locking end of the locking bolt 59 presses against the outer wall of the positioning cylinder 54. In this way, the positioning cylinder 54 is locked and fixed in the advancement groove 511 by the locking bolt 59, and the locking and fixing is simple and convenient. Preferably, at least three locking screw holes (not shown in the figure) for installing the locking bolts 59 are provided on the base 51, and these locking screw holes are evenly distributed on the same circumference. In this way, the positioning cylinder 54 is locked by at least three locking bolts 59, which can improve the installation stability of the positioning cylinder 54 in the advancement groove 511. Preferably, the driving pin 2 is mounted on the supporting sleeve 62 by means of a fixing bolt 63, a mounting groove 621 is provided on the supporting sleeve 62, a positioning protrusion 21 is provided on the driving pin 2, and the positioning protrusion 21 is clamped in the mounting groove 621. In this way, the mounting groove 621 is provided on the supporting sleeve 62 in the supporting sleeve 6 to clamp the positioning protrusion 21 on the driving pin 2, so as to prevent the driving pin 2 from being dislocated due to force, thereby affecting the effect of the driving pin 2 clamping the shaft workpiece 3. Preferably, the fixing bolts 63 are symmetrically arranged on both sides of the mounting groove 621. In this way, the installation stability of the driving pin 2 on the supporting sleeve 62 can be further improved.

[0020] like Figures 1 to 4As shown, the withdrawal mechanism includes a connecting sleeve 71, a withdrawal member 72, a withdrawal guide shaft 73 and a withdrawal elastic member 74. The connecting sleeve 71 is sleeved on the connecting column 52 and connected to the adjusting rod 57; the withdrawal member 72 is sleeved on the driving top 1 and connected to the connecting sleeve 71 through the withdrawal guide shaft 73, and the withdrawal member 72 can slide along the withdrawal guide shaft 73; the withdrawal elastic member 74 is sleeved on the withdrawal guide shaft 73 and is located between the connecting sleeve 71 and the withdrawal member 72. In this way, when the clamping tail tip 4 releases the shaft workpiece 3, the withdrawal elastic member 74 pushes the shaft workpiece 3 through the withdrawal member 72, so that the shaft workpiece 3 is separated from the driving top 1, that is, the driving top 1 is withdrawn from the clamping groove 32 at the end of the shaft workpiece 3. The shaft workpiece rotation drive device of the utility model can realize the automatic separation of the shaft workpiece 3 and the driving top 1 by using the withdrawal elastic member 74 to push the withdrawal member 72, which is simple and convenient to use. Preferably, the two ends of the withdrawal guide shaft 73 are connected to the connecting sleeve 71 and the withdrawal member 72 by connecting bolts, and the connection is simple and convenient. Preferably, a gasket 75 is sleeved on the withdrawal guide shaft 73, and the gasket 75 is close to the two ends of the withdrawal guide shaft 73 and abuts against the two ends of the withdrawal elastic member 74, so as to prevent the withdrawal elastic member 74 from extending into the through hole of the connecting sleeve 71 or the withdrawal member 72 on which the withdrawal guide shaft 73 is installed, thereby affecting the withdrawal elastic member 74 to push the withdrawal member 72 to separate the shaft workpiece 3 from the driving top 1. Preferably, the withdrawal elastic member 74 adopts a spring, and the material selection is simple and convenient. Preferably, a plurality of withdrawal guide shafts 73 are provided in the withdrawal mechanism, and these withdrawal guide shafts 73 are evenly distributed on the same circumference. In this way, the stability of the withdrawal elastic member 74 pushing the shaft workpiece 3 through the withdrawal member 72 can be improved. Preferably, the central axis of the withdrawal guide shaft 73 is parallel to the central axis of the driving top 1. In this way, the production, processing and assembly are simple and convenient, and the withdrawal elastic member 74 is used to push the shaft workpiece 3 through the withdrawal member 72 stably. Preferably, the withdrawal member 72 includes a withdrawal disk 721 and a withdrawal ring 722, the withdrawal disk 721 is connected to the withdrawal guide shaft 73, the withdrawal ring 722 is sleeved on the support sleeve 62, and the free end of the withdrawal ring 722 is away from the connecting seat 5; the withdrawal ring 722 is provided with a withdrawal top block 723, and the distance between the withdrawal top block 723 and the driving top 1 is smaller than the distance between the withdrawal ring 722 and the driving top 1. In this way, the withdrawal top block 723 is provided on the withdrawal ring 722 of the withdrawal member 72, so that the shaft workpiece 3 is pushed by the withdrawal top block 723 to separate the shaft workpiece 3 from the driving top 1. After long-term use and wear, the withdrawal top block 723 can be directly replaced without replacing the withdrawal member 72, thereby reducing the use and maintenance cost of the shaft workpiece rotation drive device of the utility model. Preferably, the withdrawal top block 723 is fixed to the withdrawal disk 721 by bolts, and the installation is simple and convenient.

[0021] When the above-mentioned shaft workpiece rotation driving device is assembled into the superfinishing machine, the shaft workpiece rotation driving device is connected in line with the driving spindle of the driving mechanism in the superfinishing machine, and the driving center and the clamping tail tip are used to clamp the shaft workpiece, and the driving pin is used to clamp the shaft workpiece, thereby avoiding relative displacement of the shaft workpiece with the driving center and the clamping tail tip during rotation, thereby improving the superfinishing effect.

Claims

1. A shaft workpiece rotation drive device, characterized in that: The shaft workpiece driving device includes a driving center and a driving pin, wherein the driving center is connected to a driving mechanism, the driving pin is located on the side of the driving center, and when the driving center presses against the end of the shaft workpiece, the driving pin extends into the workpiece pin hole at the end of the shaft workpiece.

2. The shaft workpiece rotation driving device according to claim 1, characterized in that: The rotation driving device for shaft-type workpieces includes a connecting seat, which includes a fixedly connected base and a connecting column. The base is connected to the driving spindle of the driving mechanism, and the connecting end of the connecting column away from the base is connected to the driving center. The driving center is colinear with the driving spindle, and a driving pin groove for installing the driving pin is provided on the side wall of the driving center.

3. The shaft workpiece rotation driving device according to claim 2, characterized in that: The base is provided with an advancement groove, in which a connecting rod, a positioning cylinder, an adjustment seat and an advancement elastic member are provided, the connecting rod is passed through the advancement groove and is colinearly connected with the connecting end of the driving top in the connecting hole on the connecting column, the positioning cylinder is sleeved on the connecting rod and fixed at the notch of the advancement groove, the adjustment seat is sleeved on the connecting rod and can slide along the connecting rod between the positioning cylinder and the groove bottom of the advancement groove, the advancement elastic member is sleeved on the connecting rod and located between the positioning cylinder and the adjustment seat; a support sleeve is sleeved on the driving top, the support sleeve includes a fixedly connected connecting ring and a support sleeve sleeve, the connecting ring is connected to the adjustment seat via an adjusting rod passed through the adjusting through hole on the connecting column, the support sleeve sleeve is close to the top end of the driving top, and the driving pin is installed and fixed on the support sleeve sleeve.

4. The shaft workpiece rotation driving device according to claim 3, characterized in that: The driving pin is mounted on the supporting sleeve by means of a fixing bolt. The supporting sleeve is provided with a mounting slot. The driving pin is provided with a positioning convex, and the positioning convex is clamped in the mounting slot.

5. The shaft workpiece rotation driving device according to claim 3 or 4, characterized in that: The adjusting seat is provided with a limiting ring groove for installing the propulsion elastic member, and the notch of the limiting ring groove faces the positioning tube.

6. The shaft workpiece rotation driving device according to claim 3 or 4, characterized in that: A buffer seat is sleeved on the connecting rod and is located between the connecting column and the adjusting seat.

7. The shaft workpiece rotation driving device according to claim 3 or 4, characterized in that: A locking bolt is arranged on the base, and in a locked state, a locking end of the locking bolt presses against the outer wall of the positioning tube.

8. The shaft workpiece rotation driving device according to claim 3 or 4, characterized in that: The shaft workpiece rotation driving device includes a connecting sleeve, an exit piece, an exit guide shaft and an exit elastic piece. The connecting sleeve is sleeved on the connecting column and connected to the adjusting rod; the exit piece is sleeved on the driving top and connected to the connecting sleeve through the exit guide shaft, and the exit piece can slide along the exit guide shaft; the exit elastic piece is sleeved on the exit guide shaft and is located between the connecting sleeve and the exit piece.

9. The shaft workpiece rotation driving device according to claim 8, characterized in that: The withdrawal member includes a withdrawal disk and a withdrawal ring, wherein the withdrawal disk is connected to the withdrawal guide shaft, and the withdrawal ring is sleeved on the support sleeve, and the free end of the withdrawal ring faces away from the connecting seat; an withdrawal top block is provided on the withdrawal ring, and the distance between the withdrawal top block and the driving top is smaller than the distance between the withdrawal ring and the driving top.

10. A superfinishing machine, characterized in that: The superfinishing machine is equipped with a shaft workpiece rotation driving device as described in any one of claims 1-9.

Images