Valve element outer circle grinding clamp

Abstract

The utility model provides an outer circle grinding clamp for a valve element, and belongs to the technical field of clamps. A valve element outer circle grinding clamp comprises two tips, a valve element is clamped between the two tips, one tip is detachably provided with a limiting assembly, the limiting assembly comprises an outer sleeve, an inner sleeve, a baffle and a limiting plate, the outer sleeve and the inner sleeve are arranged together in a sleeved mode through a deep groove ball bearing, and the limiting plate is arranged between the outer sleeve and the inner sleeve. Wherein the baffle is installed on the end face of one side of the outer sleeve, the limiting plate is connected to the outer sleeve through at least two cylindrical screws, and the limiting plate is in sliding connection with the cylindrical screws; by means of the arrangement of the limiting block on the limiting plate, the valve element can be clamped, on one hand, the valve element can be driven to rotate synchronously, on the other hand, the phenomenon of slipping generated when a tip is independently used for clamping the valve element can be avoided, and the valve element can be clamped more stably.

Description

Technical Field

[0001] The utility model belongs to the field of clamps, in particular to a valve core outer circle grinding clamp. Background Art

[0002] The valve core is one of the key parts of the hydraulic power steering system of a car. It distributes the oil provided by the power steering pump in the hydraulic power steering system. When grinding the valve core, the current processing technology is to manually install a heart-shaped clamp and use a top tip to chamfer the inner holes at both ends. During the grinding process, since both the top tip and the inner hole of the valve core are round, they are more likely to slip, which affects the grinding effect of the valve core. Utility Model Content

[0003] The utility model aims at the deficiencies of the prior art and provides a valve core outer circle grinding clamp.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve core grinding outer circle clamp, comprising two tops, a valve core is clamped between the two tops, a limit assembly can be detachably installed on one of the tops, characterized in that: the limit assembly comprises an outer sleeve, an inner sleeve, a baffle and a limit plate, the outer sleeve and the inner sleeve are sleeved together by a deep groove ball bearing, wherein the baffle is installed on one side end surface of the outer sleeve, the limit plate is connected to the outer sleeve by at least two cylindrical screws, and the limit plate is slidably connected to the cylindrical screws;

[0005] A compression spring is installed between the limit plate and the baffle, a limit block is fixed on a side of the limit plate away from the outer sleeve, and a limit slot is arranged in the limit block.

[0006] Optionally, the top point includes a first top point and a second top point, wherein the limiting assembly is installed on the first top point, and at least two limiting bolts are provided in the inner sleeve, and the inner sleeve is limited to the first top point by the limiting bolts.

[0007] Optionally, the baffle is fixed to the outer sleeve by fixing bolts, and the baffle blocks the gap between the outer sleeve and the inner sleeve.

[0008] Optionally, one end of the cylindrical screw is fixed in the outer sleeve, and the other end is slidably connected to the limit plate, and the limit plate slides on the first top at the same time.

[0009] Optionally, one end of the valve core is a valve core end face, and the shape and size of the limiting groove are consistent with the valve core end face.

[0010] Optionally, a sensor is provided on the same plane as the limit plate, and the sensor is installed on the lathe.

[0011] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. Due to the setting of the limit assembly, the outer sleeve, the inner sleeve and the deep groove ball bearing can be set to realize the dynamic and static separation rotation of the outer sleeve and the inner sleeve, so that when the outer sleeve rotates, the inner sleeve can be kept still or can be rotated synchronously.

[0013] 2. The upper limit block on the limit plate can also be set to clamp the valve core. On the one hand, it can drive the valve core to rotate synchronously, and on the other hand, it can avoid slipping when the top is used alone to clamp the valve core, making the valve core clamped more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model.

[0015] Figure 2 It is a cross-sectional view of the clamping state of the utility model.

[0016] Figure 3 It is a three-dimensional diagram of the limiting plate of the utility model.

[0017] Figure 4 It is a three-dimensional diagram of the valve core of the utility model.

[0018] 10. Outer sleeve; 11. Inner sleeve; 12. Deep groove ball bearing; 13. First center; 14. Limit plate; 15. Limit block; 16. Compression spring; 17. Limit bolt; 18. Valve core; 19. Second center; 20. Sensor; 21. Fixing bolt; 22. Baffle; 23. Limit groove; 24. Valve core end face; 25. Cylindrical screw. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.

[0020] As shown in Figures 1-4, a valve core grinding outer circle fixture includes two tops, a valve core 18 is clamped between the two tops, a limit assembly is detachably installed on one of the tops, the tops include a first top 13 and a second top 19, wherein the limit assembly is installed on the first top 13, the limit assembly includes an outer sleeve 10, an inner sleeve 11, a baffle 22 and a limit plate 14, the outer sleeve 10 and the inner sleeve 11 are sleeved together by a deep groove ball bearing 12, at least two limit bolts 17 are arranged in the inner sleeve 11, the inner sleeve 11 is limited to the first top 13 by the limit bolts 17, wherein the baffle 22 is installed on one side end surface of the outer sleeve 10, the limit plate 14 is connected to the outer sleeve 10 by at least two cylindrical screws 25, and the limit plate 14 is slidably connected to the cylindrical screw 25, one end of the cylindrical screw 25 is fixed in the outer sleeve 10, and the other end is slidably connected to the limit plate 14, and the limit plate 14 slides on the first top 13 at the same time;

[0021] A compression spring 16 is installed between the limit plate 14 and the baffle 22. A limit block 15 is fixed to the side of the limit plate 14 away from the outer sleeve 10. A limit groove 23 is provided in the limit block 15. The baffle 22 is fixed to the outer sleeve 10 by a fixing bolt 21. The baffle 22 blocks the gap between the outer sleeve 10 and the inner sleeve 11. One end of the valve core 18 is a valve core end face 24. The shape and size of the limit groove 23 are consistent with the valve core end face 24.

[0022] A sensor 20 is provided on the same plane as the limit plate 14 . The sensor 20 is installed on the lathe and is used to start the rapid rotation of the motor of the machine tool headstock.

[0023] When in use, first put the first center 13 into the headstock of the CNC cylindrical grinder, then place the second center 19 into the tailstock, then install the limit assembly on the first center 13, connect the headstock motor, and install and adjust the position of the sensor 20.

[0024] When the loading robot takes out the valve core 18 and places it between the two tops, the first top 13 will abut against the inner hole at the valve core end face 24 on the valve core 18, and the second top 19 will abut against the inner hole at the other end of the valve core 18. At this time, the valve core end face 24 does not correspond to the limiting groove 23, that is, the valve core end face 24 abuts against the end face of the limiting block 15 and compresses the compression spring 16. At this time, the head frame motor will rotate slowly, driving the outer sleeve 10 to rotate. The rotation of the outer sleeve 10 can drive the limiting plate 14 to rotate through the cylindrical screw 25. The rotation of the limiting plate 14 drives the limiting block 15 to rotate. At this time, the valve core 18 does not rotate, and the limiting block 15 rotates until the limiting groove 23 and the valve core end face on the valve core 18 are aligned. The valve core 18 is clamped in the limit plate 14 and the valve core 18 is clamped in the limit plate 14. When the limit block 15 is stuck on the valve core 18, the limit plate 14 will move away from the first top 13 until it is close to the sensor 20. At this time, the sensor 20 will give a working instruction to the head frame motor, and the head frame motor will start to rotate rapidly, thereby driving the valve core 18 to rotate through the limit plate 14 for grinding. After the grinding is completed, the head frame motor stops rotating, the unloading robot takes away the valve core 18, and the loading robot synchronously places the next valve core 18 between the two tops, and the machine tool starts to work in a cycle.

[0025] Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A valve core outer circle grinding fixture, comprising two tops, between which a valve core (18) is clamped, one of which has a detachable limit assembly, characterized in that: The limiting assembly comprises an outer sleeve (10), an inner sleeve (11), a baffle (22) and a limiting plate (14); the outer sleeve (10) and the inner sleeve (11) are sleeved together via a deep groove ball bearing (12); the baffle (22) is mounted on one side end surface of the outer sleeve (10); the limiting plate (14) is connected to the outer sleeve (10) via at least two cylindrical screws (25), and the limiting plate (14) is slidably connected to the cylindrical screws (25); A compression spring (16) is installed between the limit plate (14) and the baffle (22); a limit block (15) is fixed on the side of the limit plate (14) away from the outer sleeve (10); and a limit slot (23) is provided in the limit block (15).

2. A valve core outer circle grinding fixture according to claim 1, characterized in that: The top point comprises a first top point (13) and a second top point (19), wherein the limiting assembly is installed on the first top point (13), and at least two limiting bolts (17) are arranged in the inner sleeve (11), and the inner sleeve (11) is limited on the first top point (13) by the limiting bolts (17).

3. A valve core outer circle grinding fixture according to claim 1, characterized in that: The baffle (22) is fixed to the outer sleeve (10) by means of fixing bolts (21), and the baffle (22) blocks the gap between the outer sleeve (10) and the inner sleeve (11).

4. A valve core outer circle grinding fixture according to claim 2, characterized in that: One end of the cylindrical screw (25) is fixed in the outer sleeve (10), and the other end is slidably connected to the limiting plate (14), and the limiting plate (14) slides on the first top (13) at the same time.

5. The valve core outer circle grinding fixture according to claim 1, characterized in that: One end of the valve core (18) is a valve core end surface (24), and the shape and size of the limiting groove (23) are consistent with the valve core end surface (24).

6. The valve core outer circle grinding fixture according to claim 1, characterized in that: A sensor (20) is provided on the same plane of the limiting plate (14), and the sensor (20) is installed on the lathe.

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