Electromagnetic centerless clamp

Abstract

The utility model relates to an electromagnetic centerless clamp which comprises a supporting frame, a connecting main shaft is arranged on the supporting frame, a connecting plate and a positioning block matched with the connecting plate are arranged at one end of the connecting main shaft, an induction coil matched with the connecting plate is arranged on the supporting frame, and a first supporting plate and a second supporting plate matched with the positioning block are arranged at one end of the supporting frame. The positioning block, the first supporting plate and the second supporting plate jointly position and clamp the sealing plate. When the clamp is used, the clamping force of the clamp is controlled by controlling the power supply of the induction coil, so that the clamp can effectively clamp the sealing plate quickly, efficiently and timely, meanwhile, the positioning plate, the first supporting plate and the second supporting plate act together, the clamping force can be provided for the sealing plate in several squares at the same time, the clamping stability and continuity are guaranteed, and the sealing plate can be conveniently clamped. Therefore, the problems of displacement, deflection and the like of the part in the machining process are solved, and the machining precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of machining grinding, in particular to an electromagnetic centerless fixture, and especially relates to an electromagnetic centerless fixture for grinding machining. BACKGROUND

[0002] In the prior art, with the development of machining, a fixture with rapid clamping reaction, low energy consumption and environmental protection is needed to meet the use requirements in the field of special fixtures such as grinding machines. Therefore, electromagnetic centerless fixtures appear on the market.

[0003] However, the existing electromagnetic centerless fixtures have the problems of complex structure and inconvenient fixture use, and often need various adjustments to ensure the effectiveness and stability of the clamping force, which reduces the efficiency of machining work and increases production cost, and is not conducive to popularization and application.

[0004] Therefore, there is an urgent need in the market for a new type of electromagnetic centerless fixture with convenient structure, convenient use and stable and durable clamping force. SUMMARY

[0005] The utility model discloses an improved electromagnetic centerless fixture, which can conveniently clamp parts without damaging the surface of the parts and improve the machining precision.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: an electromagnetic centerless fixture is used to clamp a sealing plate for grinding machining, characterized in that the electromagnetic centerless fixture comprises a support frame, a connecting main shaft is arranged on the support frame, one end of the connecting main shaft is provided with a connecting plate and a positioning block matched with the connecting plate, an inductive coil matched with the connecting plate is arranged on the support frame, one end of the support frame is provided with first and second support plates matched with the positioning block, and the positioning block and the first and second support plates jointly position and clamp the sealing plate.

[0007] Preferably, one end of the positioning block is a magnetic force generating surface provided with a protrusion, and the other end is an adsorption working surface used to adsorb and position the sealing plate; one end of the connecting plate is provided with a clamping groove matched with the protrusion, and the other end of the connecting plate is sleeved on the output end of the connecting main shaft through a connecting hole.

[0008] Further, the surface of the support frame is provided with an electromagnetic switch used to control the power supply of the inductive coil, and when the inductive coil is powered on, the connecting plate and the positioning block generate an adsorption magnetic field.

[0009] Further, the first support plate and the second support plate form an included angle of 80-100 degrees, and the first and second support plates are provided with a hand-held adjusting part and a sealing plate positioning part.

[0010] Further, the handheld adjusting part comprises a hand-held waist-shaped hole, an adjusting dovetail groove and a fixing clamping hole; the sealing plate positioning part is provided with a protruding positioning protrusion, and the top of the positioning protrusion is in a concave arc shape.

[0011] Compared with the prior art, the technical scheme of the utility model not only has the improvement of the overall technical scheme, but also has the improvement of many details, and specifically has the following beneficial effects:

[0012] 1. The improved scheme, the electromagnetic centerless clamp comprises a support frame, a connecting main shaft is arranged on the support frame, a connecting plate and a positioning block matched with the connecting plate are arranged at one end of the connecting main shaft, an induction coil matched with the connecting plate is arranged on the support frame, one end of the positioning block is a magnetic force generating surface, the magnetic force generating surface is provided with a protruding block, the other end is an adsorbing working surface, and the adsorbing working surface is used for adsorbing and positioning a sealing plate; once the induction coil is electrified, a strong and stable adsorbing force can be generated on the adsorbing working surface, the sealing plate can be kept in a fixed position, and stability in a subsequent machining process is ensured.

[0013] 2. In the technical scheme of the utility model, one end of the support frame is provided with first and second supporting plates matched with the positioning block, and the positioning block and the first and second supporting plates jointly position and clamp the sealing plate; the effective cooperation of the positioning plate and the first and second supporting plates enables the sealing plate to be quickly and conveniently clamped, the clamping force is adjustable, the surface of the sealing plate is not prone to being damaged, and the utility model can be applied to high-precision and high-efficiency machining steps.

[0014] 3. In the utility model, an electromagnetic switch used for controlling the power supply of the induction coil is arranged on the surface of the support frame; when the induction coil is electrified, the connecting plate and the positioning block generate an adsorbing magnetic field; the electromagnetic field is efficient and stable, the adsorbing force is constant and effective, the sealing plate is firmly fixed during the machining process, and the efficiency and precision of machining are ensured.

[0015] 4. The utility model has the advantages of simple structure, reasonable layout, convenient use, and convenience in popularization and utilization. DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model.

[0017] Figure 2 It is a sectional view of one embodiment of the utility model.

[0018] Figure 3 It is another sectional view of one embodiment of the utility model.

[0019] Figure 4 It is a sectional view of another embodiment of the utility model.

[0020] REFERENCE SIGNS:

[0021] 1 sealing plate, 2 first support plate, 3 second support plate, 4 connecting plate, 5 support frame, 6 electromagnetic switch, 7 induction coil, 8 connecting main shaft, 9 positioning block. DETAILED DESCRIPTION

[0022] The technical solutions of the utility model will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are some of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] The utility model provides a kind of electromagnetic centerless fixture, to clamp sealing plate and carry out grinding processing, referring to specifically Figure 1 Its difference from prior art is that: electromagnetic centerless fixture includes support frame 5, support frame is equipped with connecting main shaft 8, one end of connecting main shaft is equipped with connecting plate 4 and the positioning block 9 matched with connecting plate, support frame is equipped with induction coil 7 matched with connecting plate, power is obtained by induction coil, so that connecting plate generates adsorption electromagnetic field, can effectively position and adsorb sealing plate, while one end of support frame is equipped with first, second support plate matched with positioning block, positioning block and first, second support plate are positioned and clamped to sealing plate together.

[0024] When using, the clamping force of the fixture is controlled by controlling the power supply of the induction coil, so that the fixture can react quickly, effectively and timely to effectively clamp the sealing plate, and the positioning plate and the first and second support plates act together to provide clamping force to the sealing plate at the same time, ensuring the stability and continuity of clamping, so that the part will not displace, deflect and other problems during processing, improving the processing accuracy.

[0025] Embodiment 1

[0026] In this embodiment, the electromagnetic centerless fixture includes support frame 5, support frame is equipped with connecting main shaft 8, one end of connecting main shaft is equipped with connecting plate 4 and the positioning block 9 matched with connecting plate, support frame is equipped with induction coil 7 matched with connecting plate, power is obtained by induction coil, so that connecting plate generates adsorption electromagnetic field, can effectively position and adsorb sealing plate, while one end of support frame is equipped with first, second support plate matched with positioning block, positioning block and first, second support plate are positioned and clamped to sealing plate together.

[0027] Specifically, one end of the positioning block 9 is a magnetic force generating surface provided with a protrusion, and the other end is an adsorption working surface used for adsorbing and positioning the sealing plate 1, so as to ensure that the sealing plate is closely attached to the adsorption working surface under the action of electromagnetic force, thereby generating stable and continuous adsorption force; meanwhile, one end of the connecting plate 4 is provided with a clamping groove matched with the protrusion, and the two are matched with each other to ensure the effectiveness of the magnetic field, and the other end of the connecting plate is sleeved on the output end of the connecting main shaft through the connecting hole.

[0028] In use, the surface of the support frame is provided with an electromagnetic switch 6 used for controlling the power supply of the induction coil, and when the induction coil is powered on, the connecting plate and the positioning block generate an adsorption magnetic field. The sealing plate 1 is placed on the adsorption working surface of the positioning block, so as to ensure the concentricity when the part is clamped, and prevent eccentricity caused by the size of the inner and outer diameters of the part.

[0029] An included angle of 80-100 degrees is formed between the first support plate 2 and the second support plate 3, and the preferred angle is 85-99 degrees, and the first and second support plates are provided with a hand-held adjusting part and a sealing plate positioning part. The hand-held adjusting part includes a hand-held waist-shaped hole, an adjusting dovetail groove and a fixed clamping hole; the sealing plate positioning part is provided with a protruding positioning protrusion, and the top of the positioning protrusion is in a concave arc shape.

[0030] Example 2

[0031] In this embodiment, the electromagnetic centerless clamp includes a support frame, the support frame is provided with a connecting main shaft, one end of the connecting main shaft is provided with a connecting plate and a positioning block matched with the connecting plate, the support frame is provided with an induction coil matched with the connecting plate, the induction coil is powered on to make the connecting plate generate an adsorption electromagnetic field, so as to effectively position and adsorb the sealing plate, and meanwhile, one end of the support frame is provided with a first support plate and a second support plate matched with the positioning block, and the positioning block and the first and second support plates jointly position and clamp the sealing plate.

[0032] In use, the utility model includes the following steps:

[0033] a. Select the sealing plate 1 to be ground, place the sealing plate between the point block 9 and the support plate 2 and the support plate 3, control the power supply through the electromagnetic switch 6, when the electromagnetic switch 6 is powered on, the induction coil 7 generates a magnetic field, the connecting plate 4 and the positioning block 9 generate a magnetic field, the sealing plate 1 is closely positioned in the positioning block 9 for electromagnetic adsorption, so as to ensure the concentricity when the part is clamped, and prevent eccentricity caused by the size of the outer diameter of the part;

[0034] b. Start the main shaft rotation of the machine tool, the connecting main shaft 8 rotates to drive the connecting plate 4 and the positioning block 9 to rotate, so that the sealing plate rotates to start, manually load and clamp, and the grinding machine automatically grinds double inner holes, large circles, and planes and other processes;

[0035] c. After the grinding machine finishes processing, manually unload.

[0036] After the above method, the utility model discloses a mode of electromagnetic centerless fixture, which can effectively realize the production of low-cost and high-precision products.

[0037] The above is a further detailed description of the utility model in combination with specific preferred embodiments, and cannot be regarded as the utility model being limited to the above description. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them shall be regarded as falling within the protection scope of the utility model.

Claims

1. An electromagnetic centerless chuck for holding a sealing plate for grinding, characterized by: The electromagnetic centerless clamp comprises a support frame, a connecting main shaft arranged on the support frame, a connecting plate arranged at one end of the connecting main shaft, a positioning block matched with the connecting plate, an inductive coil matched with the connecting plate, a first support plate and a second support plate matched with the positioning block at one end of the support frame, and the positioning block and the first and second support plates are used for positioning and clamping the sealing plate.

2. An electromagnetic centerless chuck as set forth in claim 1 further characterized by: One end of the positioning block is a magnetic force generating surface provided with a protrusion, and the other end is an adsorbing working surface used for adsorbing and positioning the sealing plate; one end of the connecting plate is provided with a clamping groove matched with the protrusion, and the other end of the connecting plate is sleeved on the output end of the connecting main shaft through a connecting hole.

3. An electromagnetic centerless chuck as set forth in claim 1 further characterized by: An electromagnetic switch for controlling the power supply of the inductive coil is arranged on the surface of the support frame, and when the inductive coil is powered on, the connecting plate and the positioning block generate an adsorbing magnetic field.

4. An electromagnetic centerless chuck as set forth in claim 1 further characterized by: An included angle of 80-100 degrees is formed between the first support plate and the second support plate, and the first and second support plates are provided with a hand-held adjusting part and a sealing plate positioning part.

5. An electromagnetic centerless chuck as set forth in claim 4 further characterized by: The hand-held adjusting part comprises a hand-gripping waist-shaped hole, an adjusting dovetail groove and a fixed clamping hole; the sealing plate positioning part is provided with a protruding positioning protrusion, and the top of the positioning protrusion is in a concave arc shape.

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