Special grinding machine clamp for machining inner hole of screw rod and grinding machine
By employing a combination of tapered and elastic components in the grinding machine fixture, the problem of unstable clamping during screw inner hole machining was solved, achieving higher machining accuracy and stability, and improving product quality.
Patent Information
- Application Number
- CN202423118906.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing screw inner hole machining fixtures are prone to shaking during clamping, resulting in large machining errors and reduced machining accuracy and product quality.
The design employs a combination of tapered and elastic components. The tapered component abuts against the end face of the workpiece through the elastic component, forming a stable clamping. The spindle and the fixture body are fixed by a detachable connection, ensuring close contact between the tapered component and the workpiece.
It improves the stability and precision of screw inner hole machining, reduces machining errors, and enhances product machining quality.
Smart Images
Figure CN223558174U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of grinding machine processing technology especially a special grinding machine clamp for processing screw hole and grinding machine. BACKGROUND
[0002] At present, the special grinding machine clamp for processing screw hole includes clamp body and main shaft, the clamp body is connected with the main shaft, the main shaft has installation cavity for screw insertion, the bottom surface of the installation cavity is abutted on the screw end by the cone to form positioning, the other end of the main shaft is fixedly connected with the clamp body by bolts to fix the screw to be processed. However, since the diameter surface of the screw to be processed is narrow and the axial extension is long, when the end surface to be processed is positioned by the abutting cone bottom surface, the abutting surface is unstable, which leads to large processing error and reduces the processing precision and product quality. SUMMARY
[0003] In order to overcome the defects of the prior art, the utility model provides a special grinding machine clamp for processing screw hole and grinding machine which can stably clamp the screw to be processed.
[0004] In order to achieve the above purpose, the utility model adopts the technical scheme of a special grinding machine clamp for processing screw hole, which comprises clamp body and main shaft, the main shaft has cavity for inserting the workpiece to be processed, characterized in that a conical part is installed in the cavity, one end of the conical part is abutted by an elastic part, the other end of the conical part has a conical end part which is abutted on the radial end surface of one end of the workpiece to be processed, the other end of the workpiece to be processed is limitedly matched with the clamp body to prevent the workpiece to be processed from being pulled out, and one end of the main shaft is detachably fixedly connected with the clamp body.
[0005] Further, the cavity on the main shaft comprises machining groove and positioning groove arranged at two ends of the main shaft respectively, the machining groove and the positioning groove have a communication groove therebetween, one end of the workpiece to be processed is located in the machining groove, one end of the conical part is located in the positioning groove and is limitingly movably connected with the communication groove, the conical end part of the conical part is abutted on the radial end surface of one end of the workpiece to be processed after passing through the communication groove, a locking part is also installed in the positioning groove, and the elastic part is installed between the locking part and the conical part.
[0006] Further, the conical part comprises a column, the column has the conical end part formed by cutting at one end, the other end of the column has an outwardly expanded edge extending along the radial end surface, a stepped surface is formed between the outwardly expanded edge and the column, and the stepped surface is limitingly matched with the communication groove.
[0007] Further, the conical part is provided with an open slot at one end of the elastic part, and at least part of the structure of the elastic part is accommodated in the open slot.
[0008] Further, the locking part is provided with a mounting end surface at one end of the elastic part, the mounting end surface is provided with a protrusion at the middle part, one end of the elastic part is in abutment with the mounting end surface, and the protrusion extends into the elastic part to form a positioning fit.
[0009] Further, one end of the elastic part is located in the open slot of the conical part, the other end of the elastic part is in abutment on the mounting end surface of the locking part, the bottom surface of the open slot is provided with a groove matched with the protrusion, and the elastic part is in abutment with the open end of the groove.
[0010] Further, the side surface of the locking part is further provided with a pre-tightening part, the pre-tightening part extends into the locking part along the radial direction of the locking part and is in threaded connection with the locking part, and the locking part is provided with a long hole matched with the pre-tightening part, and the long axis direction of the long hole is consistent with the extension direction of the elastic part.
[0011] Further, one end of the column is formed into a conical body through cutting, the angle of the conical body is an acute angle, and the conical body constitutes the conical end part.
[0012] Further, the angle of the conical body is 60 degrees.
[0013] The application also provides a special grinding machine for machining screw inner holes, which comprises the special grinding machine clamp for machining screw inner holes.
[0014] By adopting the above scheme, the end surface of the workpiece to be machined is in abutment with the conical part in the cavity of the main shaft part, and the conical part is in elastic abutment with the elastic part, so that the clamp is more stable in clamping the workpiece to be machined and improves the machining precision.
[0015] The utility model will be further described below in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0016] ATTACHED Figure 1 It is the front view schematic diagram of the embodiment structure of the utility model;
[0017] ATTACHED Figure 2 It is the front view schematic diagram of the embodiment structure of the utility model; Figure 1 It is the enlarged view of A part of the attached
[0018] ATTACHED Figure 3 It is the left view schematic diagram of the embodiment structure of the utility model;
[0019] Clamp body 1, main shaft 2, processing groove 21, positioning groove 23, communication groove 22, workpiece 3, notch 31, tapered part 4, cylinder 41, tapered end 42, open groove 43, recess 431, elastic part 5, locking part 6, protrusion 61, flared edge 44, step surface 45, L-shaped barrier 24, long hole 62, pre-tightening part 7. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0021] It should be noted that when a component is referred to as being "fixed" or "disposed" on another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in the description of the present application are for the purpose of illustration only and do not indicate the only embodiment.
[0022] In addition, the terms "first" and "second" are used only for the purpose of description and should not be understood as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.
[0023] In the present application, unless otherwise explicitly specified and limited, the "on", "under", "above" and "over" of the first feature on the second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the "on", "above" and "over" of the first feature on the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature on the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0024] Unless otherwise defined, all technical and scientific terms used in the application's specification are intended to have the same meaning as commonly understood by one of ordinary skill in the art to which the application pertains. The terminology used in the application's specification is for describing particular embodiments only and is not intended to be limiting of the application. The use of the terms "and / or" includes any and all combinations of one or more of the associated listed items.
[0025] The specific embodiment of the utility model discloses Figures 1-3 As shown in a kind of special grinding machine fixture for processing screw inner hole, including fixture body 1 and main shaft piece 2, main shaft piece 2 has the cavity that can be inserted to the workpiece 3 to be processed, the cavity is installed with conical part 4, one end of this conical part 4 is abutted by elastic member 5, the other end of this conical part 4 has conical end 42, which is abutted on the radial end face of one end of the workpiece 3 to be processed, the other end of the workpiece 3 to be processed forms the limit cooperation that prevents the workpiece 3 to be processed from being extricated with fixture body 1, one end of main shaft piece 2 is inserted into the workpiece 3 to be processed and forms detachable fixed connection with fixture body 1, specifically, it can be through threaded connection or through the fixing of connecting bolt between flange plate and fixture body 1 etc..The workpiece 3 to be processed can be rod structure piece or tubular structure piece or prism structure piece etc., in one of the embodiments, the workpiece 3 to be processed is screw, and the inner hole of the end face of screw is processed.
[0026] It needs to be explained that the above-mentioned conical part 4 is inserted into the recess 31 of the work end face of the workpiece 3 to be processed through its conical end 42, and forms positioning abutment, and the other end of the conical part 4 is abutted by the elastic member 5 so that the conical part 4 is tightly abutted on the workpiece 3 to be processed, is driven by elastic force and is more closely contacted with the workpiece 3 to be processed, so that the fixture clamping is more stable, and the machining precision is further improved.
[0027] Further setting is that the cavity on main shaft piece 2 includes processing groove 21 and positioning groove 23 respectively arranged at both ends of main shaft piece 2, and the processing groove 21 and the positioning groove 23 have a communication groove 22, one end of the workpiece 3 to be processed is located in the processing groove 21, one end of the conical part 4 is located in the positioning groove 23 and forms limit movable connection with the communication groove 22, the conical end 42 of the conical part 4 is abutted on the radial end face of one end of the workpiece 3 to be processed after passing through the communication groove 22, and the locking member 6 is also installed in the positioning groove 23, and the elastic member 5 is installed between the locking member 6 and the conical part 4.
[0028] It needs to be explained that the above-mentioned conical part 4 is abutted on the end face of the workpiece 3 to be processed through the conical end 42, and the other end is limited in the communication groove 22, and the diameter of the communication groove 22 is smaller than that of the positioning groove 23, so that the other end of the conical part 4 cannot be extricated from the positioning groove 23; in addition, the above-mentioned locking member 6 provides an installation end face for the elastic member 5, so that the installation structure is more stable, and the elastic driving force is more stable.
[0029] Further, the taper 4 includes a cylinder 41, one end of which is formed into a tapered end 42 by cutting, and the other end of which has an outwardly flared edge 44 extending along a radial end face, and a stepped face 45 is formed between the outwardly flared edge 44 and the cylinder 41, and the stepped face 45 is in limited engagement with the communication groove 22.
[0030] It should be noted that the taper 4 is in limited engagement with the communication groove 22 through the outwardly flared edge 44 thereof, and the diameter of the communication groove 22 is smaller than that of the positioning groove 23, so that an L-shaped blocking wall 24 is formed at the joint of the communication groove 22 and the positioning groove 23, and the L-shaped blocking wall 24 can block the overtravel movement of the taper 4. The shape of the taper 4 can be tubular or prismatic, without specific limitation.
[0031] Further, the taper 4 is provided with an open groove 43 at one end thereof facing the elastic member 5, and at least part of the structure of the elastic member 5 is accommodated in the open groove 43.
[0032] It should be noted that the open groove 43 on the taper 4 can be used for inserting the end of the elastic member 5 therein, so as to ensure that the axial expansion and contraction of the elastic member 5 is guided, and the elastic driving force is stably applied to the workpiece 3 along the axial direction.
[0033] Further, the locking member 6 is provided with a mounting end face at one end thereof facing the elastic member 5, and the mounting end face has a protrusion 61 in the middle thereof, and one end of the elastic member 5 abuts against the mounting end face, and the protrusion 61 extends into the elastic member 5 to form a positioning engagement.
[0034] It should be noted that the elastic member 5 is a spring in this embodiment, and the protrusion 61 in the middle of the mounting end face of the locking member 6 can extend into the inner ring of the spring to play a positioning role.
[0035] Further, one end of the elastic member 5 is located in the open groove 43 of the taper 4, and the other end of the elastic member 5 abuts against the mounting end face of the locking member 6, and the bottom surface of the open groove 43 has a groove 431 adapted to the protrusion 61, and the end of the elastic member 5 abutting against the groove 431 is along the opening end of the groove 431.
[0036] It should be noted that the groove 431 in the bottom surface of the open groove 43 of the taper 4 reserves a space for accommodating the middle protrusion for the overtravel movement of the taper 4.
[0037] Further, the side surface of the locking member 6 is further provided with a pre-tightening member 7, the pre-tightening member 7 extends into the locking member 6 along the radial direction of the locking member 6, and is in threaded connection with the locking member 6, and the locking member 6 is provided with a long hole 62 adapted to the pre-tightening member 7, and the long axis direction of the long hole 62 is consistent with the expansion and contraction direction of the elastic member 5.
[0038] It should be noted that the pre-tightening member 7 can adjust the extension and contraction degree of the spring, and adjust the pre-tightening force of the spring according to specific conditions. The elastic force of the elastic member 5 is adjusted by the cooperation of the pre-tightening member 7 and the long hole 62 to make the elastic member 5 compressed shorter or stretched longer. In the embodiment, the pre-tightening member 7 is preferably in the form of a bolt structure, which can penetrate the locking member 6 along the radial direction of the locking member 6, so that the radial movement of the pre-tightening member 7 is more stable.
[0039] Further, one end of the column 41 is formed into a conical body by cutting, the angle of the conical body is an acute angle, the conical body constitutes a tapered end 42, and the column 41 is integrally connected with the tapered end 42 and the outwardly expanding edge 44. In one embodiment, the angle of the conical body is 60 degrees.
[0040] It should be noted that the column 41, the conical body and the outwardly expanding edge 44 are integrally connected, which is more convenient for processing and can provide better strength and prolong the service life.
[0041] In addition, the application also provides a special grinding machine for machining screw inner hole, which comprises the special grinding machine clamp for machining screw inner hole as described above.
[0042] The utility model is not limited to the above-mentioned specific embodiments, and each technical feature of the above embodiments can be combined arbitrarily. In order to make the description simple, each technical feature in the above embodiments is not described in all possible combinations, however, as long as the combination of these technical features does not exist contradictory, it should be considered as the scope of the present application. According to the content disclosed in the present application, a person skilled in the art can use other various specific embodiments to implement the present application, or any design structure and idea using the present application, simple changes or modifications, all fall within the protection scope of the present application.
Claims
1. A special grinding machine fixture for machining the inner hole of a screw, comprising a fixture body and a spindle, the spindle having a cavity for inserting a workpiece, characterized in that, A conical component is installed inside the cavity. One end of the conical component is abutted by an elastic component, and the other end of the conical component has a conical end face. The conical end face abuts against the radial end face of one end of the workpiece to be processed. The other end of the workpiece to be processed forms a limiting fit with the fixture body to prevent the workpiece to be processed from coming out. The end of the spindle component inserted into the workpiece to be processed forms a detachable fixed connection with the fixture body.
2. The special grinding machine fixture for machining the inner hole of a screw as described in claim 1, characterized in that, The cavity on the spindle includes a machining groove and a positioning groove respectively disposed at both ends of the spindle. A connecting groove is provided between the machining groove and the positioning groove. One end of the workpiece to be processed is located in the machining groove, and one end of the tapered member is located in the positioning groove and forms a limiting movable connection with the connecting groove. The tapered end of the tapered member passes through the connecting groove and abuts against the radial end face of one end of the workpiece to be processed. A locking member is also installed in the positioning groove, and the elastic member is installed between the locking member and the tapered member.
3. The special grinding machine fixture for machining the inner hole of a screw according to claim 2, characterized in that, The tapered component includes a column, one end of which is cut to form the tapered end, and the other end of which has an outwardly flared edge extending along a radial end face. The outwardly flared edge and the column form a stepped surface, and the stepped surface forms a limiting fit with the connecting groove.
4. The special grinding machine fixture for machining the inner hole of a screw according to claim 2 or 3, characterized in that, The tapered member has an opening groove at one end facing the elastic member, and at least a portion of the structure of the elastic member is accommodated in the opening groove.
5. The special grinding machine fixture for machining the inner hole of a screw according to claim 2, characterized in that, The locking member has a mounting end face that mates with the elastic member at one end. The mounting end face has a protrusion in the middle. One end of the elastic member abuts against the mounting end face, and the protrusion extends into the elastic member to form a positioning fit.
6. The special grinding machine fixture for machining the inner hole of a screw according to claim 5, characterized in that, One end of the elastic element is located in the opening groove of the tapered element, and the other end of the elastic element abuts against the mounting end face of the locking element. The bottom surface of the opening groove has a groove that matches the protrusion, and the elastic element abuts against the opening edge of the groove.
7. The special grinding machine fixture for machining the inner hole of a screw according to claim 2, characterized in that, A pre-tightening member is also installed on the side of the locking member. The pre-tightening member extends into the locking member radially and is threadedly connected to the locking member. The locking member has an elongated hole that mates with the pre-tightening member. The long axis of the elongated hole is aligned with the extension and retraction direction of the elastic member.
8. The special grinding machine fixture for machining the inner hole of a screw according to claim 3, characterized in that, One end of the column is cut to form a cone with an acute angle. This cone constitutes the conical end. The column, the conical end, and the outwardly flared edge are integrally connected and formed.
9. The special grinding machine fixture for machining the inner hole of a screw as described in claim 8, characterized in that, The angle of the cone is 60 degrees.
10. A special grinding machine for machining the inner hole of a screw, characterized in that, Includes the special grinding machine fixture for machining the inner hole of a screw as described in any one of claims 1 to 9.