Cylinder ball-milling clamp
By performing internal clamping in the cylinder block center hole, the problems of poor neutrality and damage to the outer peripheral surface caused by the clamp clamping of the outer peripheral surface in the prior art are solved, and efficient cylinder spherical grinding is achieved.
Patent Information
- Application Number
- CN202422053575.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-23
AI Technical Summary
In the prior art, clamping the outer peripheral surface of the cylinder body causes the electric grinding equipment to be neutral with the cylinder ball face, affecting the grinding effect, and possibly damaging the outer peripheral surface of the cylinder body.
A cylinder ball grinding fixture is adopted, through internal clamping in the central hole of the cylinder, and a combined structure of the mandrel, a sleeve and a rod body is used to ensure that the electric grinding equipment is concentric with the cylinder spherical surface and avoid damage to the outer peripheral surface.
The neutralization between the electric grinding equipment and the cylinder spherical surface is achieved, the grinding effect is improved, and the outer peripheral surface of the cylinder is protected from damage.
Smart Images
Figure CN223084500U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of plunger pump processing, and particularly relates to a cylinder block ball milling fixture. Background Art
[0002] The ball milling process (spherical surface grinding) of the plunger pump cylinder block is a key process in the plunger pump processing, which directly affects the performance of the pump.
[0003] Currently, during the ball milling process, the cylinder block is usually clamped on the outer peripheral surface of the cylinder block by a fixture, and then the electric grinding equipment is centered with the spherical surface of the cylinder block based on the fixture to grind the spherical surface of the cylinder block. In this way, since the outer peripheral surface of the cylinder block clamped by the fixture may not be concentric with the spherical surface of the cylinder block, the centering between the electric grinding equipment and the spherical surface of the cylinder block is poor, affecting the grinding effect, and also damaging the outer peripheral surface of the cylinder block. Summary of the Utility Model
[0004] Based on this, in view of the above technical problems, a cylinder block ball milling fixture is provided.
[0005] The technical solution adopted by the utility model is as follows:
[0006] A cylinder block ball milling fixture, characterized by comprising:
[0007] A seat body, on which a mandrel is provided. The mandrel gradually widens from its head to its root, and a concentric inner hole is provided in the mandrel;
[0008] A expandable sleeve for axially moving along the head to the root of the mandrel to gradually increase its outer diameter. A concentric first hole section and a second hole section are provided in the expandable sleeve. The shape of the first hole section is adapted to the mandrel. The second hole section is a straight hole, which is connected to the narrow end of the first hole section. A groove is provided on the inner wall of the second hole section. The expandable sleeve is concentrically sleeved on the mandrel through its first hole section;
[0009] A rod body for axially pushing and pulling the expandable sleeve to move the expandable sleeve between an initial position and a tightened position. The rod body is axially adjustably arranged in the inner hole of the mandrel, and a convex part is provided at its head in the groove.
[0010] The cylinder block ball milling fixture of the utility model does not clamp on the outer peripheral surface of the cylinder block as in the prior art, but internally clamps in the central hole (concentric with the spherical surface of the cylinder block) of the cylinder block, which not only ensures the centering between the electric grinding equipment and the spherical surface of the cylinder block, but also does not damage the outer peripheral surface of the cylinder block. Description of the Drawings
[0011] The following will describe the utility model in detail with reference to the drawings and specific embodiments:
[0012] Figure 1Schematic structural view of the present utility model;
[0013] Figure 2 Schematic structural view of the seat body of the present utility model;
[0014] Figure 3 Schematic structural view of the expansion sleeve of the present utility model;
[0015] Figure 4 Axial sectional structural view of the expansion sleeve of the present utility model;
[0016] Figure 5 Schematic view of the usage state of the present utility model. Specific implementation manners
[0017] The following will describe the implementation manners of the present utility model in conjunction with the accompanying drawings of the specification. It should be noted that the implementation manners involved in this specification are not exhaustive and do not represent the only implementation manner of the present utility model. The following corresponding embodiments are only for clearly explaining the utility model content of the present utility model patent and do not limit its implementation manners. For those of ordinary skill in the art, different forms of changes and modifications can be made based on the description of this embodiment. Any changes or modifications that belong to the technical concept and utility model content of the present utility model and are obvious are also within the protection scope of the present utility model.
[0018] As Figure 1 shown, an embodiment of the present utility model provides a cylinder ball milling fixture, including a seat body 1100, an expansion sleeve 1200, and a rod body 1300.
[0019] As Figure 2 shown, the seat body 1100 has a mandrel 1110 in the left - right direction. The mandrel 1110 is designed as a conical cylinder, which gradually widens from the head to the root (from right to left).
[0020] The mandrel 1110 has a concentric inner hole 1111. The inner hole 1111 has an extension section 1111a extending into the seat body 1100, and the extension section 1111a has an internal thread.
[0021] As Figure 3 and Figure 4 shown, the expansion sleeve 1200 is a metal sleeve body, on which four first slits 1210 and four second slits 1220 are circumferentially and evenly arranged. The four first slits 1210 and the four second slits 1220 are arranged alternately. Both the first slit 1210 and the second slit 1220 are in a U - shape. The first slit 1210 starts from the right end of the expansion sleeve 1200, and the second slit 1220 starts from the left end of the expansion sleeve 1200.
[0022] The expansion sleeve 1200 has a concentric inner hole. As Figure 4As shown, the inner hole is composed of concentric first hole section 1230 and second hole section 1240. The shape of the first hole section 1230 is adapted to the mandrel. The second hole section 1240 is a circular straight hole, which is connected to the narrow end of the first hole section 1230. The inner wall of the second hole section 1240 has a groove 1241. See Figure 1 .
[0023] Among them, the circular straight hole means that the radial section of the second hole section 1240 is circular and the axial dimensions are the same, that is, it is different from a tapered hole.
[0024] The expanding sleeve 1200 is concentrically sleeved on the mandrel 1110 through its first hole section 1230. When axially moving along the head to the root of the mandrel 1110, its outer diameter gradually becomes larger.
[0025] A dust-proof inner lining made of plastic material is provided in the inner hole of the expanding sleeve 1200 to prevent dust generated by ball milling from entering the fixture.
[0026] As Figure 1 shown, the rod body 1300 is arranged in the inner hole 1111 of the mandrel 1110. Its head has a convex portion 1310 arranged in the groove 1241, and its tail is located in the extension section 1111a and has an external thread adapted to the internal thread of the extension section 1111a. The axial position of the rod body 1300 in the inner hole 1111 can be adjusted through threaded engagement connection, so as to axially push and pull the expanding sleeve 1200 to move it between the initial position and the tightened position.
[0027] In this embodiment, the groove 1241 is an annular groove, and the convex portion 1310 is annular.
[0028] As Figure 5 shown, when in use, the fixture is fixed on the chuck 4. First, the cylinder body 2 is sleeved outside the expanding sleeve 1200 through the central hole of the cylinder body 2. Then, the rod body 1300 is tightened from the head through a tool. The rod body 1300 pushes the expanding sleeve 1200 to axially move from the initial position to the tightened position on the mandrel 1110, making the outer diameter of the mandrel 1110 become larger, just internally clamping the cylinder body 2. Then, the electric grinding equipment 3 is started, and its grinding wheel 31 grinds the spherical surface of the cylinder body 2.
[0029] After grinding is completed, the rod body 1300 is loosened, and the expanding sleeve 1200 is axially pulled back from the tightened position to the initial position, releasing the cylinder body 2, so as to remove the cylinder body 2 from the expanding sleeve 1200.
[0030] As can be seen from the above, the embodiment of the present utility model provides a cylinder body ball milling fixture, which does not clamp on the outer peripheral surface of the cylinder body as in the prior art, but internally clamps in the central hole (concentric with the spherical surface of the cylinder body) of the cylinder body, not only ensuring the centering of the electric grinding equipment and the spherical surface of the cylinder body, but also not damaging the outer peripheral surface of the cylinder body.
[0031] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.
Claims
1. A cylinder block ball milling fixture, characterized in that, Comprising: A seat body, on which there is a mandrel. The mandrel gradually widens from its head to its root, and there is a concentric inner hole in the mandrel. A expanding sleeve for axially moving along the head to the root of the mandrel to gradually increase its outer diameter. There are concentric first hole section and second hole section in the expanding sleeve. The shape of the first hole section is adapted to the mandrel. The second hole section is a straight hole, which is connected to the narrow end of the first hole section. There is a groove on the inner wall of the second hole section. The expanding sleeve is concentrically sleeved on the mandrel through its first hole section. A rod body for axially pushing and pulling the expanding sleeve to move the expanding sleeve between an initial position and a tightening position. The rod body is axially adjustably arranged in the inner hole of the mandrel, and its head has a protruding part arranged in the groove.
2. The cylinder block ball milling fixture according to claim 1, wherein The mandrel is a conical cylinder, and the second hole section is a circular straight hole.
3. The cylinder block ball milling fixture according to claim 1, characterized in that The expanding sleeve is a metal sleeve body, on which there are a plurality of first slits and a plurality of second slits that are circumferentially and evenly arranged and have the same number. The plurality of first slits and the plurality of second slits are staggered. Both the first slits and the second slits are U-shaped. The first slits start from one end of the expanding sleeve, and the second slits start from the other end of the expanding sleeve.
4. The cylinder block ball milling fixture according to claim 3, wherein Both the first slits and the second slits are 4 in number.
5. A cylinder block ball milling fixture according to claim 1, characterized in that, A dust-proof inner lining is provided in the inner hole of the expanding sleeve.
6. The cylinder block ball milling fixture according to claim 1, wherein The rod body is threadedly connected to the inner hole of the mandrel.
7. The cylinder block ball milling fixture according to claim 6, characterized in that, The inner hole of the mandrel has an extension section extending into the seat body. The extension section has an internal thread. The tail of the rod body is located in the extension section and has an external thread adapted to the internal thread.
8. The cylinder block ball milling fixture according to claim 1, characterized in that, The groove on the inner wall of the second hole section is an annular groove, and the protruding part is annular.